{"title":"Ronstan Series 40 Orbit Blocks — User Instructions","description":"\u003clink rel=\"stylesheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/om-manual-v2.css\"\u003e\u003cstyle\u003e.mpom .om-tbl.nw td+td{white-space:nowrap}.mpom details.om-dd{position:relative;margin:0}.mpom details.om-dd\u003esummary{list-style:none;cursor:pointer}.mpom details.om-dd\u003esummary::-webkit-details-marker{display:none}.mpom .om-dd-menu{position:absolute;left:0;top:calc(100% + 6px);min-width:100%;width:max-content;max-width:360px;background:#fff;border:1px solid #e3e5e8;border-radius:6px;box-shadow:0 8px 24px rgba(0,0,0,.14);z-index:30;padding:6px}.mpom .om-dd-menu a{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:10px 12px;border-radius:4px;font-size:14px;font-weight:600;color:#2a2b2a!important;text-decoration:none!important}.mpom .om-dd-menu a:hover{background:#f5f6f8}.mpom .om-dd-menu small{font-weight:400;color:#5f6368;white-space:nowrap}\u003c\/style\u003e\u003cdiv class=\"mpom\"\u003e\n\u003cdiv class=\"om-head\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"om-tag\"\u003eINSTRUCTIONS\u003c\/span\u003e\u003cp class=\"om-lead\"\u003eHow to lash the Series 40 Orbit lashing blocks, free or lock the swivel shackle head, reset the cam-arm angle, swap the RF46000 ratchet sheave, align cheek blocks and drill for the cheek, stand-up and exit blocks.\u003c\/p\u003e\n\u003cdiv class=\"om-box\"\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eDocument\u003c\/span\u003e\u003cb\u003eRonstan Series 40 Orbit Blocks User Instructions\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eFormat\u003c\/span\u003e\u003cb\u003ePDF · 4 pages · 1.0 MB\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\" style=\"border-bottom:0\"\u003e\n\u003cspan\u003eLanguage\u003c\/span\u003e\u003cb\u003eEnglish\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-acts\"\u003e\n\u003ca class=\"om-btn dl\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Ronstan-Series-40-Orbit-Blocks-User-Instructions.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 4v11\"\u003e\u003c\/path\u003e\u003cpath d=\"m7 10 5 5 5-5\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 20h14\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Download PDF\u003c\/a\u003e\u003ca class=\"om-btn buy\" href=\"\/collections\/ronstan-orbit-blocks\"\u003eView Collection\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-toc\"\u003e\n\u003ca href=\"#om-lashing\"\u003eLashing\u003c\/a\u003e\u003ca href=\"#om-head\"\u003eSwivel Head \u0026amp; Cam Arm\u003c\/a\u003e\u003ca href=\"#om-ratchet\"\u003eRatchet Sheave\u003c\/a\u003e\u003ca href=\"#om-mount\"\u003eMounting\u003c\/a\u003e\u003ca href=\"#om-care\"\u003eCare\u003c\/a\u003e\u003ca href=\"#om-products\"\u003eProducts\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-img\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF45101.jpg?v=1728016065\" alt=\"Ronstan Series 40 Orbit Blocks — User Instructions\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-lashing\"\u003e\n\u003ch2 class=\"om-h\"\u003eLashing Instructions\u003c\/h2\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF48109\u003c\/td\u003e\n\u003ctd\u003eSingle block, lashing hub and becket option\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF48209\u003c\/td\u003e\n\u003ctd\u003eDouble block, lashing hub and becket option\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF48109HL\u003c\/td\u003e\n\u003ctd\u003eSingle block HHL, lashing hub and becket option\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"height:16px\"\u003e\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eTo meet the stated breaking loads these blocks must be lashed with a lashing, strop or link passing through the central hub. The breaking load depends on the strength of the lashing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe breaking load of the assembly (block + lashing) is generally limited by the rope and the joining method: knots, splices and stitching are generally weaker than the rope itself.\u003c\/li\u003e\n\u003cli\u003eUp to 10mm line can be used in a single pass through the hub; a smaller line with multiple passes gives a neater result and more secure knotting.\u003c\/li\u003e\n\u003cli\u003eThe blocks come with 200mm (8\") of 1.0mm (1\/16\") Dyneema® core twine to secure the lashing tight to the head of the block.\u003c\/li\u003e\n\u003cli\u003eRF48109 and RF48109HL can be lashed closed with the supplied twine, or each cheek can be lashed separately so the block twists open as a snatch block.\u003c\/li\u003e\n\u003cli\u003eAttach to a mounting point with a smooth, well-rounded profile. On sharp-edged or rough fittings put a smooth-surfaced shackle between lashing and fitting.\u003c\/li\u003e\n\u003cli\u003eLashings degrade from fatigue, wear and UV: inspect them with your running rigging and replace if they show significant wear or fibre damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block om-grid2\" id=\"om-head\"\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eUniversal swivel shackle head\u003c\/h2\u003e\n\u003ch3 class=\"om-h3\"\u003eTo let the block swivel freely\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eRemove the shackle, then the blackened stainless steel collar from the headpost.\u003c\/li\u003e\n\u003cli\u003eRefit the shackle to the headpost without the collar.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3 class=\"om-h3\"\u003eTo fix the block at 0° or 90°\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eRemove the shackle and the collar.\u003c\/li\u003e\n\u003cli\u003eRotate the headpost so the cross-drilled hole for the shackle pin is where you want it.\u003c\/li\u003e\n\u003cli\u003eRefit the collar to lock the headpost, then refit the shackle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eAdjusting the cam-arm angle\u003c\/h2\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF46330\u003c\/td\u003e\n\u003ctd\u003eTriple block, becket, adjustable cleat, swivel shackle head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF46530\u003c\/td\u003e\n\u003ctd\u003eQuin block, becket, adjustable cleat, swivel shackle head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF48120\u003c\/td\u003e\n\u003ctd\u003eSingle block, adjustable cleat, swivel shackle head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF48330\u003c\/td\u003e\n\u003ctd\u003eTriple block, becket, adjustable cleat, swivel shackle head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"height:16px\"\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eRF46330, RF48120, RF48330: remove the cam-arm screws and cover plates, then back off the screws on both sides of the brace bar by one turn (anti-clockwise). Flex the stainless steel cam arms and remove them.\u003c\/li\u003e\n\u003cli\u003eRF46530: remove the cam-arm screws and cover plates, then flex the cam arms off the block.\u003c\/li\u003e\n\u003cli\u003eReposition the cam arm for the cleat angle you want, refit the cover plates and tighten the screws, then tighten the brace-bar screws.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-ratchet\"\u003e\n\u003ch2 class=\"om-h\"\u003eReplacing the Ratchet Sheave (RF46330, RF46530)\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eRemove the cam arms as above.\u003c\/li\u003e\n\u003cli\u003eRemove the split ring and becket pin, and slide the central ratchet sheave out from the back of the block.\u003c\/li\u003e\n\u003cli\u003eSlide in the new RF46000 ratchet sheave: it keys into the slots inside the cheeks.\u003c\/li\u003e\n\u003cli\u003eThe ratchet comes engaged from the factory. Check the sense of rotation: the rope must pull smoothly through the cleat and be held by the ratchet when releasing.\u003c\/li\u003e\n\u003cli\u003eIf you want, turn the ratchet on or off with the switch on the side of the sheave (flat screwdriver) before reassembly.\u003c\/li\u003e\n\u003cli\u003eRefit the becket pin and split ring, reposition the cam arms and finish the assembly as above.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart no.\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF46000\u003c\/td\u003e\n\u003ctd\u003eRatchet sheave, Series 40 RT Orbit blocks\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/ronrf46000\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-mount\"\u003e\n\u003ch2 class=\"om-h\"\u003eCheek Block Alignment \u0026amp; Mounting\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003eAlign cheek blocks so the axis of the block bisects the angle between line entry and exit, with both approximately in the same plane. Misalignment or improper installation reduces the load capacity of the block.\u003c\/li\u003e\u003c\/ul\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct no.\u003c\/th\u003e\n\u003cth\u003eFastening\u003c\/th\u003e\n\u003cth\u003eCentres\u003c\/th\u003e\n\u003cth\u003eOutside\u003c\/th\u003e\n\u003cth\u003eA\u003c\/th\u003e\n\u003cth\u003eB\u003c\/th\u003e\n\u003cth\u003eC\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF48140\u003c\/td\u003e\n\u003ctd\u003e2 × 5mm (2 × 3\/16\")\u003c\/td\u003e\n\u003ctd\u003e37mm (1 7\/16\")\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF48151\u003c\/td\u003e\n\u003ctd\u003e2 × 6mm (2 × 1\/4\")\u003c\/td\u003e\n\u003ctd\u003e30mm (1 3\/16\")\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF45711\u003c\/td\u003e\n\u003ctd\u003e2 × 6mm (2 × 1\/4\")\u003c\/td\u003e\n\u003ctd\u003e83mm (3 1\/4\")\u003c\/td\u003e\n\u003ctd\u003e30 × 105mm (1 3\/16 × 4 1\/8\")\u003c\/td\u003e\n\u003ctd\u003e58mm (2 1\/4\")\u003c\/td\u003e\n\u003ctd\u003e23mm (15\/16\")\u003c\/td\u003e\n\u003ctd\u003e33mm (1 5\/16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF45711HL\u003c\/td\u003e\n\u003ctd\u003e2 × 6mm (2 × 1\/4\")\u003c\/td\u003e\n\u003ctd\u003e83mm (3 1\/4\")\u003c\/td\u003e\n\u003ctd\u003e30 × 105mm (1 3\/16 × 4 1\/8\")\u003c\/td\u003e\n\u003ctd\u003e58mm (2 1\/4\")\u003c\/td\u003e\n\u003ctd\u003e23mm (15\/16\")\u003c\/td\u003e\n\u003ctd\u003e33mm (1 5\/16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF45711N\u003c\/td\u003e\n\u003ctd\u003e2 × 6mm (2 × 1\/4\")\u003c\/td\u003e\n\u003ctd\u003e75mm (2 15\/16\")\u003c\/td\u003e\n\u003ctd\u003e26 × 95mm (1 × 3 3\/4\")\u003c\/td\u003e\n\u003ctd\u003e58mm (2 1\/4\")\u003c\/td\u003e\n\u003ctd\u003e19mm (3\/4\")\u003c\/td\u003e\n\u003ctd\u003e33mm (1 5\/16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eA, B, C are the exit-block dimensions shown in the drawing on page 3 of the PDF. Page 4 holds 1:1 shadow\/drilling templates for RF48151, RF45711, RF45711HL and RF45711N (Ø 6.5mm holes): print on A4 at 1:1 and check the printed dimensions before drilling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-care\"\u003e\n\u003ch2 class=\"om-h\"\u003eCare and Maintenance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGrit and sand damage the bearing system: flush blocks, especially the bearings, with fresh water regularly and clean them periodically with mild detergent and water.\u003c\/li\u003e\n\u003cli\u003eDry lubricants such as Ronstan Sailfast™ silicon spray may be used on the bearings and ratchet controls. Never use oil or petrochemical-based lubricants.\u003c\/li\u003e\n\u003cli\u003eOrbit Blocks are designed and made for use on sailboats.\u003c\/li\u003e\n\u003cli\u003eLashing and soft attachments must be correctly installed, inspected regularly and replaced when necessary, on a smooth, well-rounded mounting point without sharp edges or burrs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eNeed a part that isn't listed? \u003ca href=\"\/pages\/contact\"\u003eAsk us to source it\u003c\/a\u003e and quote the part number from the PDF.\u003c\/p\u003e\n\u003ch2 class=\"om-h\" id=\"om-products\"\u003eProducts in this Manual\u003c\/h2\u003e\n\u003c\/div\u003e","products":[{"product_id":"ronrf45151","title":"Ronstan Series 40 BB Orbit Block, Cheek","description":"\u003cp\u003eBall Bearing Orbit Blocks'boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fibre-reinforced composites in the block head, cleat arms and beckets.\u003c\/p\u003e\u003cp\u003eMainsheet systems on spinnaker sheet on dinghies to 5 m (16 ft), spinnaker sheets on dinghies, sportsboats and small keel boats to 5 m (16 ft), halyard, vang and backstay applications on boats to 8 m (26 ft), control line applications on larger yachts.Our Part # RONRF45151 | Ronstan Part # RF45151\u003c\/p\u003e\u003cp\u003eMainsheet systems on spinnaker sheet on dinghies to 5 m (16 ft), spinnaker sheets on dinghies, sportsboats and small keel boats to 5 m (16 ft), halyard, vang and backstay applications on boats to 8 m (26 ft), control line applications on larger yachts.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF45151 | Ronstan Part # RF45151\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347645145394,"sku":"RONRF45151","price":33.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF45151_7f42fb18-3aeb-43a2-9f96-aabc87a68d1b.jpg?v=1737036631"},{"product_id":"ronrf45110","title":"Ronstan Series 40 BB Orbit Block, Single, Becket, Swivel Head","description":"\u003cp\u003eBall Bearing Orbit Blocks'boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fibre-reinforced composites in the block head, cleat arms and beckets.\u003c\/p\u003e\u003cp\u003eMainsheet systems on spinnaker sheet on dinghies to 5 m (16 ft), spinnaker sheets on dinghies, sportsboats and small keel boats to 5 m (16 ft), halyard, vang and backstay applications on boats to 8 m (26 ft), control line applications on larger yachts. Our Part # RONRF45110 | Ronstan Part # RF45110\u003c\/p\u003e\u003cp\u003eMainsheet systems on spinnaker sheet on dinghies to 5 m (16 ft), spinnaker sheets on dinghies, sportsboats and small keel boats to 5 m (16 ft), halyard, vang and backstay applications on boats to 8 m (26 ft), control line applications on larger yachts.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF45110 | Ronstan Part # RF45110\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347645342002,"sku":"RONRF45110","price":34.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF45110.jpg?v=1735835541"},{"product_id":"ronrf45101","title":"Ronstan Series 40 BB Orbit Block, Single, Link Head","description":"\u003cp\u003eLightweight\u003c\/p\u003e\u003cp\u003eKilogram for kilogram of working load, BB and RT Orbit Blocks's are the world's lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimises the mass of the inactive return race and hub. Weight and bulk are further reduced in the different block configurations. The ball bearing single and becket block has a through-sheave becket arrangement. The result? The lowest weight possible. Multi-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. This gives a 30% weight saving advantage over the nearest competitor. Other brands just link together their single blocks. This results in unnecessary double cheeks between each sheave, held together by a heavy steel channel across the top of the block.\u003c\/p\u003e\u003cp\u003eHighest working load in its class\u003c\/p\u003e\u003cp\u003eThe orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximises load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range.\u003c\/p\u003e\u003cp\u003eDyneema link specialties\u003c\/p\u003e\u003cp\u003eTo gain peak performance, we engineered out the heavy steel load straps, head post, shackle, full-length fasteners, and cleating accessories. Through extensive research and development, we replaced virtually all metal components with high-tech polymers and fibre equivalents. The Dyneema Link is produced from FSE Robline SK75 fibre, which is 10 times stronger and lighter than steel, and provides the final connection from the block to the load point.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF45101 | Ronstan Part # RF45101\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347645505842,"sku":"RONRF45101","price":33.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF45101.jpg?v=1728016065"},{"product_id":"ronrf48109","title":"Ronstan S40 BB Orbit Block,Single,Becket Option,Lashing","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is extremely versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the-beach performance catamarans.\u003c\/p\u003e\u003cp\u003eBall Bearing versions incorporate our 2-stage bearing system using ball bearings to minimise friction and a secondary full-contact bearing to maintain low friction across the full working load range.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF48109| Ronstan Part # RF48109\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347654058290,"sku":"RONRF48109","price":35.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48109.jpg?v=1728052517"},{"product_id":"ronrf45140","title":"Ronstan Series 40 BB Orbit Block, Single, Stand-Up Swivel Head","description":"\u003cp\u003eThe Ronstan Series 40 BB Orbit Block, Single, Stand-Up Swivel Head #RF45140 is a game-changer for sailors seeking lightweight and efficient performance. With its innovative design that keeps weight to a minimum without sacrificing strength, it's perfect for various sailing applications. This block is engineered to offer maximum load capacity with minimal friction, making it an ideal choice for enthusiasts and professionals alike.\u003c\/p\u003e\u003cp\u003eCrafted using advanced materials, this orbit block features high compression strength carbon black Acetal ball bearings and a glass fiber reinforced, MoS2 impregnated nylon stage 2 bearing. The frame and cheeks are made from toughened, glass fiber reinforced nylon, while the sheave incorporates carbon fiber reinforced, PTFE impregnated nylon. It is tailored for mainsheet systems and spinnaker sheets on dinghies, sportsboats, and small keelboats up to 5 meters, as well as halyard, vang, and backstay applications on boats up to 8 meters.\u003c\/p\u003e\u003cp\u003eUsage\u003c\/p\u003e\u003cp\u003eIdeal for mainsheet systems on spinnaker sheets for dinghies to 5m, this versatile block is also suited for spinnaker sheets on sportsboats and small keelboats. It’s perfect for halyard, vang, and backstay applications on larger boats, ensuring reliability and performance.\u003c\/p\u003e\u003cp\u003eOur Part #RONRF45140 | Mfr. Part #RF45140\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347755901234,"sku":"RONRF45140","price":54.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF45140.jpg?v=1735835534"},{"product_id":"ronrf48100","title":"Ronstan S40 BB Orbit Block,Single,Becket,Swivel Head","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability.\u003c\/p\u003e\u003cp\u003eThe RF48100 Single Block features a 40mm (1 9\/16\") sheave and incorporates our 2-stage bearing system. Ball bearings minimise friction while a secondary full-contact bearing maintains low friction across the full working load range. This product does not have a locking headpost, which is only available in the multiple sheave variants. RF48100 is free swivel rotation only.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF48100| Ronstan Part # RF48100\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347761733938,"sku":"RONRF48100","price":40.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48100.jpg?v=1728034015"},{"product_id":"ronrf48140","title":"Ronstan S40 BB Orbit Block,Single,Stand-Up","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is extremely versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the-beach performance catamarans. Ball Bearing versions incorporate our 2-stage bearing system using ball bearings to minimise friction and a secondary full-contact bearing to maintain low friction across the full working load range.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF48140| Ronstan Part # RF48140\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347819602226,"sku":"RONRF48140","price":50.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48140.jpg?v=1728061888"},{"product_id":"ronrf46100m","title":"Ronstan Series 40 RTM OrbitBlock,Manual, Single, Swivel","description":"\u003cp\u003eAutomatic and manual ratchet options:Now you can enjoy the flexibility of setting up your fitout exactly to suit yourself. Ronstan is the only company that offers a 40mm ratchet block with both auto and manual engagement modelsWith automatic models, the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. Manual modes allow the ratchet mechanism to be switched on or off as required. This is the preferred mainsheet set-up for many top sailors.Awesome ratchet block holding power:Quite simply, Ronstan Ratchet Orbit Blocks™ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry. The Series 40 delivers up to 14:1 holding power, almost double that of our nearest competititor. The unique sheave design has 8 gripping faces which directly resist loaded line movement. Traditional designs have an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.Simple and secure attachment:The Dyneema® Link is easily fitted and is retained securely by a moulded retainer clip. The flexible link can be left with one end attached to the block when fitting - no more lost shackle pins.The system is compatible with Dyneema®\/Spectra® strops, webbing and carbon connection points - much more so than steel loop tops or shackles.Smooth easing of sheets:With auto models the sheet runs out smoothly and freely as soon as the ratchet mechanism disengages. When engaged, and with manual models, the sheave cross - hole geometry eliminates the 'shuddering' ease-out that you can expect from traditional v-groove ratchet blocks.Low profile stand-up kit allows 0 or 90 alignment:Stand-up kits feature a clatter-free rubber boot. You can attach the Dyneema® link so that the block is aligned with the stand-up base or across it. It's a neat low-profile solution which allows full articulation. Our Part # RONRF46100M | Ronstan Part # RF46100M\u003c\/p\u003e\u003cp\u003eNow you can enjoy the flexibility of setting up your fitout exactly to suit yourself. Ronstan is the only company that offers a 40mm ratchet block with both auto and manual engagement modelsWith automatic models, the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. Manual modes allow the ratchet mechanism to be switched on or off as required. This is the preferred mainsheet set-up for many top sailors.\u003c\/p\u003e\u003cp\u003eAwesome ratchet block holding power:Quite simply, Ronstan Ratchet Orbit Blocks™ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry. The Series 40 delivers up to 14:1 holding power, almost double that of our nearest competititor. The unique sheave design has 8 gripping faces which directly resist loaded line movement. Traditional designs have an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.Simple and secure attachment:The Dyneema® Link is easily fitted and is retained securely by a moulded retainer clip. The flexible link can be left with one end attached to the block when fitting - no more lost shackle pins.The system is compatible with Dyneema®\/Spectra® strops, webbing and carbon connection points - much more so than steel loop tops or shackles.Smooth easing of sheets:With auto models the sheet runs out smoothly and freely as soon as the ratchet mechanism disengages. When engaged, and with manual models, the sheave cross - hole geometry eliminates the 'shuddering' ease-out that you can expect from traditional v-groove ratchet blocks.Low profile stand-up kit allows 0 or 90 alignment:Stand-up kits feature a clatter-free rubber boot. You can attach the Dyneema® link so that the block is aligned with the stand-up base or across it. It's a neat low-profile solution which allows full articulation. Our Part # RONRF46100M | Ronstan Part # RF46100M\u003c\/p\u003e\u003cp\u003eQuite simply, Ronstan Ratchet Orbit Blocks™ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry. The Series 40 delivers up to 14:1 holding power, almost double that of our nearest competititor. The unique sheave design has 8 gripping faces which directly resist loaded line movement. Traditional designs have an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.\u003c\/p\u003e\u003cp\u003eSimple and secure attachment:The Dyneema® Link is easily fitted and is retained securely by a moulded retainer clip. The flexible link can be left with one end attached to the block when fitting - no more lost shackle pins.The system is compatible with Dyneema®\/Spectra® strops, webbing and carbon connection points - much more so than steel loop tops or shackles.Smooth easing of sheets:With auto models the sheet runs out smoothly and freely as soon as the ratchet mechanism disengages. When engaged, and with manual models, the sheave cross - hole geometry eliminates the 'shuddering' ease-out that you can expect from traditional v-groove ratchet blocks.Low profile stand-up kit allows 0 or 90 alignment:Stand-up kits feature a clatter-free rubber boot. You can attach the Dyneema® link so that the block is aligned with the stand-up base or across it. It's a neat low-profile solution which allows full articulation. Our Part # RONRF46100M | Ronstan Part # RF46100M\u003c\/p\u003e\u003cp\u003eThe Dyneema® Link is easily fitted and is retained securely by a moulded retainer clip. The flexible link can be left with one end attached to the block when fitting - no more lost shackle pins.The system is compatible with Dyneema®\/Spectra® strops, webbing and carbon connection points - much more so than steel loop tops or shackles.\u003c\/p\u003e\u003cp\u003eSmooth easing of sheets:With auto models the sheet runs out smoothly and freely as soon as the ratchet mechanism disengages. When engaged, and with manual models, the sheave cross - hole geometry eliminates the 'shuddering' ease-out that you can expect from traditional v-groove ratchet blocks.Low profile stand-up kit allows 0 or 90 alignment:Stand-up kits feature a clatter-free rubber boot. You can attach the Dyneema® link so that the block is aligned with the stand-up base or across it. It's a neat low-profile solution which allows full articulation. Our Part # RONRF46100M | Ronstan Part # RF46100M\u003c\/p\u003e\u003cp\u003eWith auto models the sheet runs out smoothly and freely as soon as the ratchet mechanism disengages. When engaged, and with manual models, the sheave cross - hole geometry eliminates the 'shuddering' ease-out that you can expect from traditional v-groove ratchet blocks.\u003c\/p\u003e\u003cp\u003eLow profile stand-up kit allows 0 or 90 alignment:Stand-up kits feature a clatter-free rubber boot. You can attach the Dyneema® link so that the block is aligned with the stand-up base or across it. It's a neat low-profile solution which allows full articulation. Our Part # RONRF46100M | Ronstan Part # RF46100M\u003c\/p\u003e\u003cp\u003eStand-up kits feature a clatter-free rubber boot. You can attach the Dyneema® link so that the block is aligned with the stand-up base or across it. It's a neat low-profile solution which allows full articulation.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF46100M | Ronstan Part # RF46100M\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347819634994,"sku":"RONRF46100M","price":77.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF46100M.jpg?v=1735835464"},{"product_id":"ronrf48209","title":"Ronstan S40 BB Orbit Block,Double,Becket Option,Lashing","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is extremely versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the-beach performance catamarans.\u003c\/p\u003e\u003cp\u003eBall Bearing versions incorporate our 2-stage bearing system using ball bearings to minimise friction and a secondary full-contact bearing to maintain low friction across the full working load range.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF48209| Ronstan Part # RF48209\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347831693618,"sku":"RONRF48209","price":68.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48209.jpg?v=1728061276"},{"product_id":"ronrf48151","title":"Ronstan S40 BB Orbit Block,Cheek","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. The sheave incorporate our 2-stage bearing system using ball bearings to minimise friction and a secondary full-contact bearing to maintain low friction across the full working load range.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF48151| Ronstan Part # RF48151\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347879305522,"sku":"RONRF48151","price":58.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48151.jpg?v=1728056000"},{"product_id":"ronrf46100","title":"Ronstan Series 40 RTA OrbitBlock,Auto, Single, Swivel Head","description":"\u003cp\u003eThe Series 40 RTA OrbitBlock #RF46100 is designed to offer sailors the ultimate in flexibility with both automatic and manual ratchet options. It's great for anyone looking to optimize their sailing setup with ease, thanks to its smooth sheet release and secure attachment system. With top-notch holding power, it's a favorite among competitive sailors.\u003c\/p\u003e\u003cp\u003eCrafted with innovative Generation 2 sheave cross-hole geometry, this block delivers up to 14:1 holding power, nearly double that of its closest competitor. It features a flexible Dyneema ® Link that ensures a secure attachment and compatibility with various modern connection systems. With dimensions tailored for effective sailing performance, it integrates seamlessly with your gear while reducing rope wear and enhancing durability.\u003c\/p\u003e\u003cp\u003eUsage\u003c\/p\u003e\u003cp\u003eIdeal for rapid easing of sheets and gybing asymmetric spinnakers, this block is perfect for anyone who values smooth operation and high performance on the water.\u003c\/p\u003e\u003cp\u003eOur Part #RONRF46100 | Mfr. Part #RF46100\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347881795890,"sku":"RONRF46100","price":77.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF46100.jpg?v=1735835556"},{"product_id":"ronrf46101","title":"Ronstan Series 40 RTA OrbitBlock,Auto, Single, Link Head","description":"\u003cp\u003eAutomatic and manual ratchet options\u003c\/p\u003e\u003cp\u003eNow you can enjoy the flexibility of setting up your fitout exactly to suit yourself. Ronstan is the only company that offers a 40mm ratchet block with both auto and manual engagement models*. With automatic models, the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. Manual modes allow the ratchet mechanism to be switched on or off as required. This is the preferred mainsheet set-up for many top sailors.\u003c\/p\u003e\u003cp\u003eAwesome ratchet block holding power\u003c\/p\u003e\u003cp\u003eQuite simply, Ronstan Ratchet Orbit blocks have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry. The Series 40 delivers up to 14:1 holding power, almost double that of our nearest competititor. The unique sheave design has 8 gripping faces which directly resist loaded line movement. Traditional designs have an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.\u003c\/p\u003e\u003cp\u003eSmooth easing of sheets\u003c\/p\u003e\u003cp\u003eWith auto models the sheet runs out smoothly and freely as soon as the ratchet mechanism disengages. When engaged, and with manual models, the sheave cross - hole geometry eliminates the 'shuddering' ease-out that you can expect from traditional v-groove ratchet blocks.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF46101 | Ronstan Part # RF46101\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347884220722,"sku":"RONRF46101","price":77.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF46101.jpg?v=1728028680"},{"product_id":"ronrf46151a","title":"Ronstan Series 40 RTA OrbitBlock, Cheek, Anti-Clockwise Rotation","description":"\u003cp\u003eThe OrbitBlock #RF46151A is your go-to choice for strength and efficiency in sailing. It's designed with lightweight, reinforced polymer materials, ensuring durability and easy handling on the water. This cheek block is great for those looking to optimize their sailing gear without the fuss.\u003c\/p\u003e\u003cp\u003eThe OrbitBlock is made from advanced composite materials, enhancing both strength and weight reduction. It features fiber-reinforced composite elements in critical areas like the block head and cleat arms. This makes it compatible with various sailing systems, including dinghy mainsheet systems and modern asymmetric classes. Technical specs include its adaptable attachment options and ability to integrate seamlessly with other sailing gear.\u003c\/p\u003e\u003cp\u003eUsage\u003c\/p\u003e\u003cp\u003eIdeal for dinghy mainsheet systems, fine-tuning on sportsboats, and control lines on larger yachts. It's especially suited for spinnaker and jib sheets on modern asymmetric classes.\u003c\/p\u003e\u003cp\u003eOur Part #RONRF46151A | Mfr. Part #RF46151A\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347931275570,"sku":"RONRF46151A","price":77.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF46151A.jpg?v=1735835689"},{"product_id":"ronrf46151","title":"Ronstan Series 40 RTA OrbitBlock, Cheek, Clockwise Rotation","description":"\u003cp\u003eThe Ronstan Series 40 RTA OrbitBlock, Cheek, Clockwise Rotation #RF46151 is a top choice for sailors looking for efficiency and reliability. Its innovative design combines lightweight materials with high strength, making it ideal for various sailing applications. Enjoy smooth sailing with minimal friction thanks to its precision-engineered ball bearings.\u003c\/p\u003e\u003cp\u003eConstructed with all-composite reinforced polymer materials, this ronstan cheek block offers durability without the bulk. The block head, cleat arms, and beckets are crafted from fibre-reinforced composites to minimize weight. It's perfect for dinghy mainsheet systems, sportsboats, and larger yachts, especially in modern asymmetric classes.\u003c\/p\u003e\u003cp\u003eUsage\u003c\/p\u003e\u003cp\u003eIdeal for dinghy mainsheet systems, fine-tune systems on sportsboats and small keelboats, and spinnaker and jib sheets. It's also great for control line applications on larger yachts, providing maximum efficiency in a variety of sailing scenarios.\u003c\/p\u003e\u003cp\u003eOur Part #RONRF46151 | Mfr. Part #RF46151\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347959521586,"sku":"RONRF46151","price":77.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF46151.jpg?v=1735835715"},{"product_id":"ronrf46000","title":"Ronstan S40 RT Sheave,Replacement Cassette","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability.\u003c\/p\u003e\u003cp\u003eAs well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is extremely versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the- beach performance catamarans.\u003c\/p\u003e\u003cp\u003eSeries 40 Orbit Blocks are fitted with our carbon reinforced C-Cleat's for secure rope holding with low entry and exit efforts, and fairleads for fast action from any angle. Cleat arms are made from stainless steel and are adjustable for setting to your preferred cleating angle.\u003c\/p\u003e\u003cp\u003eBall Bearing versions incorporate our 2-stage bearing system using ball bearings to minimise friction and a secondary full-contact bearing to maintain low friction across the full working load range.\u003c\/p\u003e\u003cp\u003eHigh Load versions are designed specifically for any application where high dynamic or static loads are expected. They feature a high strength grade 2205 stainless steel sheave \u0026amp; hub together with a triple bearing race to maintain low friction at very high loads.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF46000 | Ronstan Part # RF46000\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347963748658,"sku":"RONRF46000","price":98.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF46000.jpg?v=1728038536"},{"product_id":"ronrf45711n","title":"Ronstan S40 AP Exit Block,Narrow","description":"\u003cp\u003eExit Blocks minimise friction in lines passing through the deck or exiting masts and booms. The RF45711 exit block incorporates our 2-stage bearing system using ball bearings to minimise friction and a secondary full-contact bearing to maintain low friction across the full working load range.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF45711N| Ronstan Part # RF45711N\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347966566706,"sku":"RONRF45711N","price":99.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF45711N.jpg?v=1728044353"},{"product_id":"ronrf45130","title":"Ronstan Series 40 BB Orbit Block, Single, Becket, Cleat, Swivel Head","description":"\u003cp\u003eBall Bearing Orbit Blocks'boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fibre-reinforced composites in the block head, cleat arms and beckets.\u003c\/p\u003e\u003cp\u003eMainsheet systems on spinnaker sheet on dinghies to 5 m (16 ft), spinnaker sheets on dinghies, sportsboats and small keel boats to 5 m (16 ft), halyard, vang and backstay applications on boats to 8 m (26 ft), control line applications on larger yachts. Our Part # RONRF45130 | Ronstan Part # RF45130\u003c\/p\u003e\u003cp\u003eMainsheet systems on spinnaker sheet on dinghies to 5 m (16 ft), spinnaker sheets on dinghies, sportsboats and small keel boats to 5 m (16 ft), halyard, vang and backstay applications on boats to 8 m (26 ft), control line applications on larger yachts.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF45130 | Ronstan Part # RF45130\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347978232114,"sku":"RONRF45130","price":101.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF45130.jpg?v=1735835536"},{"product_id":"ronrf48200","title":"Ronstan S40 BB Orbit Block,Double,Swivel Shackle","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is extremely versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the-beach performance catamarans.\u003c\/p\u003e\u003cp\u003eBall Bearing versions incorporate our 2-stage bearing system using ball bearings to minimise friction and a secondary full-contact bearing to maintain low friction across the full working load range.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF48200| Ronstan Part # RF48200\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348011393330,"sku":"RONRF48200","price":90.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48200.jpg?v=1728028835"},{"product_id":"ronrf45711","title":"Ronstan S40 BB Exit Block","description":"\u003cp\u003eExit Blocks minimise friction in lines passing through the deck or exiting masts and booms. The RF45711 exit block incorporates our 2-stage bearing system using ball bearings to minimise friction and a secondary full-contact bearing to maintain low friction across the full working load range.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF45711| Ronstan Part # RF45711\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348031676722,"sku":"RONRF45711","price":117.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF45711.jpg?v=1728056943"},{"product_id":"ronrf48210","title":"Ronstan S40 BB Orbit Block,Double,Becket,Swivel Shackle","description":"\u003cp\u003eThe Ronstan S40 BB Orbit Block, Double, Becket, Swivel Shackle #RF40530 is a versatile sailing essential designed for strength and performance on the water. With its innovative two-stage ball bearing system, it offers smooth operation while maintaining low friction, making it perfect for sailing enthusiasts. Crafted with precision, this block is a reliable addition to any sailing gear.\u003c\/p\u003e\u003cp\u003eThe block features high compression strength acetal sheave and balls, ensuring durability and performance. The frame and cheeks are made of toughened, glass fibre reinforced nylon, providing robust strength without the weight of traditional stainless steel. Head fittings and hubs crafted from grade 316 stainless steel add to its reliability and corrosion resistance, making it ideal for various sailing applications.\u003c\/p\u003e\u003cp\u003eUsage\u003c\/p\u003e\u003cp\u003eThis block is perfect for creating multiple sheave systems, with versatility allowing setups such as a 12:1 purchase mainsheet system, suitable for performance catamarans and other off-the-beach sailing vessels.\u003c\/p\u003e\u003cp\u003eOur Part #RONRF48210 | Mfr. Part #RF48210\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348043374898,"sku":"RONRF48210","price":103.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48210.jpg?v=1728051600"},{"product_id":"ronrf48300","title":"Ronstan S40 BB Orbit Block,Triple,Swivel Shackle","description":"\u003cp\u003eThe Ronstan S40 BB Orbit Block, Triple, Swivel Shackle #RF40530 is a top choice for sailors looking for a balance of strength and reliability in their sailing gear. With its innovative ball bearing system and toughened materials, it's designed to handle high loads while minimizing friction. It's like having a dependable helping hand on your sailing adventures.\u003c\/p\u003e   \u003cp\u003eCrafted with high compression strength acetal sheaves and balls, this block is built to last. The frame and cheeks are made from toughened, glass fibre reinforced nylon, providing resilience without the extra weight. Featuring grade 316 stainless steel head fittings and hubs, it ensures robust performance in marine environments. Perfect for a 12:1 purchase mainsheet system, it's compatible with off-the-beach performance catamarans and more.\u003c\/p\u003e  \u003cp\u003eUsage\u003c\/p\u003e \u003cp\u003eIdeal for sailors who need a reliable and efficient block system for high-performance sailing. Whether you're racing or cruising, this block offers the versatility and strength required for demanding sailing conditions.\u003c\/p\u003e\u003cp\u003eOur Part #RONRF48300 | Mfr. Part #RF48300\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348074930482,"sku":"RONRF48300","price":134.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48300.jpg?v=1728057540"},{"product_id":"ronrf48310","title":"Ronstan S40 BB Orbit Block,Triple,Becket,Swivel Shackle","description":"\u003cp\u003eThe Ronstan S40 BB Orbit Block, Triple, Becket, Swivel Shackle #RF40530 is a real powerhouse for sailing enthusiasts, offering a perfect blend of strength and versatility. It's designed with advanced materials to withstand dynamic and static loads, ensuring optimal performance on the water. This strong block is a reliable companion for those seeking top-notch sailing gear without compromise.\u003c\/p\u003e   \u003cp\u003eThis product uses high compression strength acetal for the sheave and balls, ensuring durability and excellent performance under load. Its frame is crafted from toughened, glass fibre reinforced nylon, offering a lightweight yet robust structure. The head fittings and hubs are made from grade 316 stainless steel, providing excellent corrosion resistance—a crucial feature for marine environments. The strong block is compatible with a variety of sailing setups, including those requiring complex systems up to a 12:1 purchase mainsheet system for performance catamarans.\u003c\/p\u003e  \u003cp\u003eUsage\u003c\/p\u003e \u003cp\u003ePerfect for off-the-beach performance catamarans or any sailing setup requiring high-performance blocks, ensuring smooth sailing with minimal friction.\u003c\/p\u003e\u003cp\u003eOur Part #RONRF48310 | Mfr. Part #RF48310\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348110221618,"sku":"RONRF48310","price":143.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48310.jpg?v=1728041588"},{"product_id":"ronrf48120","title":"Ronstan S40 BB Orbit Block,Single,Cleat,Swivel","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is extremely versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the-beach performance catamarans. Ball Bearing versions incorporate our 2-stage bearing system using ball bearings to minimise friction and a secondary full-contact bearing to maintain low friction across the full working load range.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eMaterials:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSheave and Ball Bearings: High compression strength acetal\u003c\/li\u003e\n\u003cli\u003eFrame\/cheeks: Toughened, glass fibre reinforced nylon\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348238573874,"sku":"RONRF48120","price":145.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48120.jpg?v=1728038964"},{"product_id":"ronrf48109hl","title":"Ronstan S40 BB Orbit Block,HHL,Single,Becket Option,Lashing","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is extremely versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the-beach performance catamarans. High Load versions are designed specifically for any application where high dynamic or static loads are expected. They feature a high strength grade 2205 stainless steel sheave \u0026amp; hub together with a triple bearing race to maintain low friction at very high loads.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eMaterials:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHHL sheave and bearing race: Grade 2205 stainless steel, ball bearings: Grade 304 stainless steel\u003c\/li\u003e\n\u003cli\u003eFrame\/cheeks: Toughened, glass fibre reinforced nylon\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348286972210,"sku":"RONRF48109HL","price":175.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48109HL.jpg?v=1728032059"},{"product_id":"ronrf48400","title":"Ronstan S40 BB Orbit Block,Quad,Swivel Shackle","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. 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They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. 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This exit block is built to handle high dynamic or static loads, making it a reliable choice for sailors. Its sleek design and durable construction make it an essential component for any sailing enthusiast.\u003c\/p\u003e  \u003cp\u003eThe RF45711HL exit block features a sheave and bearing race made from Grade 2205 stainless steel, ensuring strong and long-lasting performance. The ball bearings are crafted from Grade 304 stainless steel, adding to its robust nature. The anodized aluminum housing provides a sleek and corrosion-resistant finish, ideal for the harsh marine environment.\u003c\/p\u003e \u003cp\u003e Our Part # RONRF45711HL | Mfr. Part # RF45711HL \u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348387635506,"sku":"RONRF45711HL","price":201.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF45711HL.jpg?v=1728029137"},{"product_id":"ronrf48500","title":"Ronstan S40 BB Orbit Block,Quin,Swivel Shackle","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. 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Part # RF48500 \u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348401463602,"sku":"RONRF48500","price":205.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48500.jpg?v=1728020896"},{"product_id":"ronrf48330","title":"Ronstan S40 BB Orbit Block,Triple,Becket,Cleat,Swivel Shackle","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. 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Part # RF48330 \u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348525457714,"sku":"RONRF48330","price":234.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48330.jpg?v=1728057515"},{"product_id":"ronrf48510","title":"Ronstan S40 BB Orbit Block,Quin,Becket,Swivel Shackle","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. 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Part # RF48510 \u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348584145202,"sku":"RONRF48510","price":214.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48510.jpg?v=1728019857"},{"product_id":"ronrf46330","title":"Ronstan S40 RT Orbit Block,Triple,Becket,Cleat,Swivel","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. 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Part # RF46330 \u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348716167474,"sku":"RONRF46330","price":328.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF46330.jpg?v=1728015390"},{"product_id":"ronrf46530","title":"Ronstan S40 RT Orbit Block,Quin,Becket,Cleat,Swivel","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. 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Part # RF46530 \u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348922409266,"sku":"RONRF46530","price":581.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF46530.jpg?v=1728035943"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/collections\/RONRF45101_f0713db2-018a-4d66-9194-5c4d6fb019ca.jpg?v=1792712366","url":"https:\/\/www.mauripro.com\/collections\/owners-manuals-ronstan-series-40-orbit-blocks.oembed?page=2","provider":"MAURIPRO Sailing","version":"1.0","type":"link"}