Harken -6 Integral Backstay Cylinder - 25mm Bore, 345mm Stroke
Regular price £0.00Harken’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, 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.
| - Size | -6 | Pull force @ 1000 psi/69 bar (kg) | 564 kg |
| Maximum wire Ø (mm) | 5.5 mm | Pull force @ 2000 psi/138 bar (kg) | 1128 kg |
| Stroke (mm) | 343 mm | Pull force @ 3000 psi/207 bar (kg) | 1692 kg |
| Pin center length (closed) (mm) | 762mm | Breaking load (kg) | 3175 kg |
| Weight (kg) | 3.37 kg | ||
| Gap/pin Ø (mm) | 11.1 mm |
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