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Harken Size -6 Integral Backstay Cylinder

Harken Size -6 Integral Backstay Cylinder

Product Details

    Technical Description

    Harken’s integral hydraulic backstay adjuster provides the power to optimize sail shape quickly. The cylinder features a built-in, double-acting pump that delivers oil when the handle is both pushed and pulled. This moves oil through the system twice as fast as single-acting pumps on other integrals.
    Assemblies include a hardcoat-anodized aluminum cylinder and pump, valve, gauge, and stainless pump handle with three attachment options: pin installs handle permanently; O-ring secures handle in socket, but is not permanent; nonlocking handle installs without O-ring and roll pin. All pins and plugs are stainless steel. Cylinders include a clevis on both ends. Standard eye-jaw toggles fit all Harken® cylinders.
    The pressure release knob turns clockwise to close and pump, counterclockwise to release. When closing the pump, the knob cannot be over-tightened by hand, preventing damage to the valve. Release speed depends on how far open the knob is turned. Pressure relief is factory set to prevent crew from over-tensioning the backstay.
    An analog gauge with pressure increments reading 0-5 (0-5000 psi) is prominently mounted at the top of the cylinder. The gauge adjusts to four positions for easy viewing from the cockpit.

    Tech Specs

    Imperial Metric
    Maximum wire Ø -6 5.5 mm
    Stroke 7/32 in 343 mm
    Pin center length 13.5 in 762 mm
    Weight 30 in 3.37 kg
    Gap/pin Ø 7.4 lb 11.1 mm
    Pull force @ 1000 psi/69 bar 7/16 in 564 kg
    Pull force @ 2000 psi/138 bar 1243 lb 1128 kg
    Pull force @ 3000 psi/207 bar 2487 lb 1692 kg
    Breaking load 3490 lb 3175 kg

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