-17 Integral Backstay Cylinder — 45mm Bore, 385mm Stroke

Part No. HCI045160385BCC.NG

Maximum wire Ø (mm) 9.5 mm

Maximum wire Ø (in) 3/8 in

Gap/pin Ø (mm) 15.9 mm

Gap/pin Ø (in) 5/8 in

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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.

Footnote	Max relief setting is 5,000 psi / 345 bar.
Breaking load (kg)	9518 kg
Breaking load (lb)	20984 lb
Weight (kg)	4.92 kg
Weight (lb)	10.8 lb
Maximum wire Ø (mm)	9.5 mm
Maximum wire Ø (in)	3/8 in
- Size	-17
Stroke (mm)	385 mm
Stroke (in)	15.2 in
Pin center length (closed) (mm)	832 mm
Pin center length (closed) (in)	32.8 in
Gap/pin Ø (mm)	15.9 mm
Gap/pin Ø (in)	5/8 in
Pull force @ 1000 psi/69 bar (kg)	952 kg
Pull force @ 1000 psi/69 bar (lb)	2098 lb
Pull force @ 2000 psi/138 bar (kg)	1904 kg
Pull force @ 2000 psi/138 bar (lb)	4197 lb
Pull force @ 3000 psi/207 bar (kg)	2855 kg
Pull force @ 3000 psi/207 bar (lb)	6295 lb
Pull force @ 4000 psi/276 bar (kg)	3807 kg
Pull force @ 4000 psi/276 bar (lb)	8394 lb
Pull force @ 5000 psi/345 bar (kg)	4759 kg
Pull force @ 5000 psi/345 bar (lb)	10492 lb

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-17 Integral Backstay Cylinder — 45mm Bore, 385mm Stroke

-17 Integral Backstay Cylinder — 45mm Bore, 385mm Stroke

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