Specifications, installation, QuickTrim™ set-up, servicing and the full parts list for the Ronstan 40QT Orbit Winch™ RA6402, two-speed self-tailing with QuickTrim™.

Specifications
| Item | Value |
|---|---|
| Product | RA6402 |
| Winch versions | V0.0-V1.0 (manual 996131 Rev.1.1) |
| Power ratio, 1st speed | 8:1 |
| Power ratio, 2nd speed | 40:1 |
| Rope diameter | 7-12mm (9/32"-1/2") |
| Weight | 3.1 kg (6.8 lb) |
| MWL | 850 kg (1870 lb) |
| Mounting | 5 x M6 (1/4") hex socket cylinder head screws, A4-70; template: 5 holes Ø6.50mm (9/32") on Ø114mm (4 1/2"), base plate Ø136mm (5 6/16", as printed) |
- The batch number is stamped on the base of the centre stem: remove the self-tailing arm and drum (installation steps 2 & 3) to read it, and quote it for any service enquiry.
- Performance options (QuickTrim™) must be set before installation: read the whole manual first.
Installation
Required
- 5 x M6 or 1/4" Grade 316 stainless steel fasteners, length to suit the deck; A4-70 DIN7991 hexagon socket cylinder head screws (as printed) recommended, torque no more than 7.1Nm.
- 5 x Grade 316 large washers or a backing plate, and 5 x Grade 316 self-locking nuts.
- Hex key 5mm for M6 (or 3/16" for 1/4"), spanner for the nuts.
- Drill Ø6.5mm for M6 bolts (or 9/32" for 1/4" bolts).
- Drilling template, sealant / bedding compound, Tef-Gel™ isolating paste.
Mounting Position
- Smooth, flat mounting surface; line entry 3-8° from horizontal.
- Align the drive gear to the line entry as shown on the drilling template.
- The self-tailing arm can be fitted in 8 positions: set it so the rope drops clear of the winch as it leaves the self tailer (the drum turns clockwise).
- Metal or carbon fibre deck: isolate the base completely from the surface to prevent galvanic corrosion (the quick reference guide also recommends isolation on raw carbon fibre).
Installation Steps
- Confirm position and orientation, clean the mounting surface and tape the drilling template in place.
- Remove the self-tailing arm: pull back the spring-loaded release latch with a fingertip, rotate the arm slightly anti-clockwise and lift it clear. Remove the closing plate and closing washer and keep the three parts together.
- Grip the top of the drum and pull it vertically off the centre stem (push gently on the central drive shaft with your thumbs if needed). Stand the centre stem on the template with the holes aligned to check the rope entry against the output drive gear.
- Drill Ø6.5mm holes for M6 bolts (Ø9/32" for 1/4"). Remove the template, clear the debris and clean the deck so the sealant can adhere.
- Apply sealant under the base of the centre stem around the holes, keeping the drainage channels in the underside of the base plate clean and free of sealant.
- Fit the centre stem with large washers (or backing plate) and locking nuts below deck, Tef-Gel™ under each fastener head. Hold the fastener with a hex key and tighten the nut from below so the anodising is not worn. No more than 7.1Nm.
- Slide the drum fully down over the centre stem. Lay the closing washer in its recess in the self tailer, correct side up. Place the closing plate over the drive shaft on top of the centre stem: a pip under the plate locates in a dimple when it is correctly oriented, leaving the bayonet notches exposed.
- Place the self-tailing arm centred and level on the closing plate, overhanging the rope splitter. Rotate to the chosen position, let the side opposite the latch drop into a bayonet notch, pull back the latch so the arm seats all round, then rotate slightly clockwise until it clicks.
- Before fitting a handle, check the drum turns smoothly clockwise by hand and will not turn anti-clockwise. With a handle: clockwise drives the drum in fast speed, anti-clockwise in slow speed.
The drilling template (996132, for RA6402, in the downloads) is drawn at 1:1 on A4: print it at 100% / actual size and check the printed copy against the dimensions on the sheet before drilling.
QuickTrim™
Enabling QuickTrim™
- The winch leaves the factory with QuickTrim™ disabled: it works as a traditional self-tailing winch until you enable it.
- Remove the self-tailing arm, then the closing plate and closing washer.
- Locate and remove the countersunk cross-head screw shown in the manual. Keep it: refitting it disables QuickTrim™ again.
- Refit the self-tailing arm as in installation step 8.
- Once enabled, demonstrate the feature to new users before they use the winch.
Using QuickTrim™
- The winch tensions, eases and casts off like a traditional self-tailing winch; QuickTrim™ lets you make minor trim adjustments without removing the handle or taking the rope out of the self tailer.
- To ease: hold the tail of the rope in one hand; put the other hand on the top cover of the self tailer, fingers lying across the rope.
- Grip with the palm and rotate the top cover anti-clockwise against the spring pressure, and hold it there: the self tailer turns beneath the cover and the line eases off the drum in a controlled manner. Grip depends on load and number of wraps; you can assist the rope on the drum or use fewer wraps.
- At the right trim let the top cover spring back: the self tailer is locked again and the winch is ready for normal use.
- Designed for minor adjustments: useful where tension is adjusted often on sheets, halyards and other lines.
Service & Maintenance
General
- Rinse with fresh water after each use to stop salt and contaminants building up.
- Complete service (dismantle, clean, lubricate) every two years; every year under extensive use such as racing, charter or extensive offshore sailing.
- Use ANDERSEN WINCH GREASE. Most other greases, including some labelled "marine grease", are not suitable and may cause a malfunction that could result in serious injury.
- Inspect the pawls and replace the springs every second year, with genuine Ronstan or Andersen pawls and springs only. Winch Pawl & Spring Kit RA710052 contains 8 pawls and 16 springs.
Required for Service
- Winch handle
- ANDERSEN winch grease and a small brush
- White mineral spirits to remove old grease and contaminants
Spacer 990871 is tapered: fit it with the wide diameter towards the base, narrow diameter up.
Servicing Steps
- Remove the self-tailing arm and drum (installation steps 2 and 3). Check the spring-loaded latch works and rinse the arm in fresh water.
- Inspect the self tailer assembly. If QuickTrim™ is enabled, check the cover rotates against the spring to let the self tailer turn anti-clockwise and springs back to lock it. Rinse in fresh water.
- Put a handle in the top of the drive shaft. Holding the drive gear, rotate the shaft slightly while pulling up gently to find the release position, then pull the shaft out.
- Remove the pawls and pawl springs from the drive shaft.
- Remove the spacer, drive gear and ratchet gear through the opening in the side of the centre stem, and the shaft bearings from inside the top of the stem.
- Lift off the ball bearing race; grip the roller bearing from opposite sides and snap it up over the containment lip of the centre stem.
- Remove the gear axle and output gear (prise the axle head plate up with a small flat screwdriver if needed). On reassembly the head plate must sit flush in the machined recess.
- Check the two top hat bearing inserts in the base are in place, holes clean and lightly greased.
- Reassemble in reverse order. Hold the shaft pawls closed when dropping the shaft down through the stem so the shaft bearings are not damaged.
- Lightly grease all gear teeth, drive shaft and axles with a soft brush. The roller bearing and ball bearing race are self-lubricating and must not be greased. Pawls: only a very thin film of Andersen Winch Grease, springs correctly oriented.
Malfunctioning pawls may let the winch release unexpectedly. Press each pawl against its spring: it must move smoothly and return by itself to engage the gear. If not, replace the springs and check again.
Exploded View & Parts List

| Part No. | Item | Description | |
|---|---|---|---|
| 996017 | 1 | Self-tailing arm assembly | Ask us to source it → |
| 990876 | 2 | Closing plate | Ask us to source it → |
| 990978 | 3 | Closing washer | Ask us to source it → |
| 990981 | 4 | Bolts, self tailer attachment | Ask us to source it → |
| 990896 | 5 | Rope splitter | Ask us to source it → |
| 996016 | 6 | Self tailer & QuickTrim™ assembly | Ask us to source it → |
| 996015 | 6.1 | Locking pin | Ask us to source it → |
| 990866M | 7 | Drum | Ask us to source it → |
| NU3 | 8 | Nut, M3 self-locking | Ask us to source it → |
| 990874 | 9 | Roller bearing assembly | Ask us to source it → |
| 996012 | 10 | Ball bearing race assembly | Ask us to source it → |
| 990998 | 11 | Shaft assembly | Ask us to source it → |
| 713300 | 11.1 | Pawl springs | Ask us to source it → |
| 713200 | 11.2 | Pawls | Ask us to source it → |
| 990871 | 12 | Spacer (tapered) | Ask us to source it → |
| 711701 | 13 | Drive gear | Ask us to source it → |
| 990870 | 14 | Ratchet gear | Ask us to source it → |
| 990878 | 15 | Gear axle | Ask us to source it → |
| 996037 | 16 | Output gear | Ask us to source it → |
| 990883 | 17 | Centre stem assembly | Ask us to source it → |
| 996034 | 17.1 | Shaft bearing | Ask us to source it → |
| 536300 | 17.2 | Top hat bearing inserts | Ask us to source it → |
| 996039 | 17.3 | Base plate | Ask us to source it → |
| SC5-516 | 17.4 | Hex socket cyl. head screw, M5x16 | Ask us to source it → |
| SC3-310 | 18 | Screw SS, M3 x 10 Cross CSK Head | Ask us to source it → |
| RA710052 | – | Winch Pawl & Spring Kit (8 pawls, 16 springs) | View part → |
Part numbers as printed in the manual. Item numbers refer to the exploded view.
Safety Notices
- Do not install or operate the winch before reading and fully understanding the product manual. Winches are very powerful: used improperly they can cause significant damage and/or serious injury.
- Every operator must understand proper operation and the hazards. Keep children and anyone not qualified clear of the winch and of any rigging or fittings under load; tie back long hair and loose clothing.
- Remove winch handles when not in use. On an electric winch, turn off power when not in use, before any maintenance, and before clearing a rope override or other fault.
- Lifting operations: never operate with the rope in the self tailer, and never use the self tailer as a cleat for a rope that lifts or suspends anything. Two persons, constant visual contact with the load, and the rope tied off or led to a cleat or bollard.
Need a part that isn't listed? Ask us to source it and quote the part number from the PDF.
Products in this Manual
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Ronstan Self Tailing Winch Orbit Size 40 - Aluminum Black / Two Speed / QuickTrim™
RONRA6402
$1,106.10 USDList Price: $1,229.00 USDUnit price /Unavailable -

Ronstan Orbit Winch Service Kit - Pawls (8 units) & Springs (16 units)
RONRA710052
$53.40 USDUnit price /Unavailable




