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Locking

Harken® locking cylinders feature an adjustable mechanical lock threaded onto the rod that physically blocks rod movement and securely fixes its position independent of the boat’s pressure system. They are commonly used by large cruisers on extended passages to safely lock the rod during pressure release and to act as a safety backup for the hydraulic system. In addition, a long-stroke cylinder is often used during the mast stepping process to lean the mast forward and hook up the furlers. After commissioning, the cylinder’s mechanical lock is engaged, limiting the stroke for sailing.

  Prod No. Name - SizeGap/pin Ø (mm)Gap/pin Ø (in)Pull force @ 5000 psi/345 bar (kg)Pull force @ 5000 psi/345 bar (lb)
-17 Locking Cylinder — 375 mm Stroke HYCL045160375 -17 Locking Cylinder — 375 mm Stroke -1715.95/8475910492
-22 Locking Cylinder — 400 mm Stroke HYCL055190400 -22 Locking Cylinder — 400 mm Stroke -2219.13/4752216582
-30 Locking Cylinder — 450 mm Stroke HYCL065220450 -30 Locking Cylinder — 450 mm Stroke -3022.27/8976921537
-40 Locking Cylinder — 475 mm Stroke HYCL075250475 -40 Locking Cylinder — 475 mm Stroke -4025.41 1425031416
-48 Locking Cylinder — 475 mm Stroke HYCL080250475 -48 Locking Cylinder — 475 mm Stroke -4828.61 1/81561434423
-60 Locking Cylinder — 550 mm Stroke HYCL090320550 -60 Locking Cylinder — 550 mm Stroke -6031.81 1/41903741970
-90 Locking Cylinder — 625 mm Stroke HYCL100320625 -90 Locking Cylinder — 625 mm Stroke -9034.91 3/82571756696
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