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-12 Integral Backstay Cylinder — 40mm Bore, 385mm Stroke -12 Integral Backstay Cylinder — 40mm Bore, 385mm Stroke
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-12 Integral Backstay Cylinder — 40mm Bore, 385mm Stroke

Part No. HCI040160385BCC.NG
£3,040.57(including VAT)  Not in Stock
Maximum wire Ø (mm)8 mm
Gap/pin Ø (mm)15.9 mm

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, 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.

FootnoteFor pin center length open add stroke length to pin center length closed., Max relief setting is 5, 000 psi / 345 bar., Rod ends (forks) included in weights. 
- Size-12 
Maximum wire Ø (mm)8 mm
Stroke (mm)385 mm
Pin center length (closed) (mm)832 mm
Weight (kg)4.92 kg
Gap/pin Ø (mm)15.9 mm
Pull force @ 1000 psi/69 bar (kg)952 kg
Pull force @ 2000 psi/138 bar (kg)1904 kg
Pull force @ 3000 psi/207 bar (kg)2855 kg
Pull force @ 5000 psi/345 bar (kg)4759 kg
Breaking load (kg)9518 kg
Drawing - DWG: (open/save)
Drawing - PDF:  HYCI040160385.PDF.pdf (open/save)
3D drawing - IGS: (open/save)

DO NOT use Harken equipment for human suspension unless product is specifically certified and labeled for such use.

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