b'Locking CylindersHarken locking cylinders feature adjustable mechanical locks threaded onto the rod to block rodAdjustable lock prevents rod movement and securely fix its position independently of the boats pressure system. They aremovement during pressure release.commonly used by large cruisers on extended passages to safely lock the rod during pressure release and as a safety backup for the hydraulic system. A long-stroke cylinder is often used dur-ing the mast stepping process to lean the mast forward and hook up the furlers. After commis-sioning, the cylinders mechanical lock is engaged, limiting the stroke for sailing. Pin centerDiameterlengthPart Stroke (closed)** Weight*** VolumeGap/pin Bore Rod Max ODNo.* - Size in mm in mm lb kg in L in mm in mm in mm in mm HYCL045160375BCC-1714.837543.9111611.95.42310.515/815.91 3/4455/8162.3159 HYCL055190400BCC-2215.740047.6121019.28.71520.863/419.12 3/16553/4192.973HYCL065220450BCC-3017.745053.6136227.212.36761.257/822.22 1/2657/8223.281HYCL075250475BCC-4018.747558.5148741.618.861181.93125.4375253.897 1 HYCL080250475BCC-4818.747559.3150549.622.521292.111 1/828.63 1/8801254.1103HYCL090320550BCC-6021.755067170170.131.821822.981 1/431.83 1/2901 1/4324.6116HYCL100320625BCC-9024.662574.4188998.944.852794.571 3/834.941001 1/4325.34136For pull forces, see cylinder with corresponding bore and rod diameter on page 232.*Specify rod and clevis end fittings by adding the appropriate suffix to end of part number. See page 234.**For pin center length open add stroke length to pin center length closed. ***Rod ends (clevis) included in weights. Ordering Single-Acting & Locking CylindersTo order use the chart below. Standard cylinders are black hardcoat-anodized with clevises on both ends. Additional cylinder and rod end options of marine eyes, barrel pin eyes, lashing eyes, and blank end fittings are available for a slight upcharge. For optional materials and fittings, replace the last three letters of the part number with your selections.Standard Cylinder Part NumberH Y C S 0 3 5 1 3 0 3 5 0 B C CCylinder Rod end fittings Action type C =Clevis: (standard)S = Single-acting L =Lashing eyeL = Locking M = Marine eye Bore diameter (mm) N = No fittingRod diameter (mm) Cylinder end fittings Stroke length (mm) C =Clevis: (standard)MaterialsB =Barrel-pin eyeB = Black hardcoat (standard) L = Lashing eyeC = Clear-anodized aluminumM = Marine eye X =Blank Materials Rod End Fittings Cylinder End FittingsHardcoat Clear-anodized Clevis LashingMarineNo fitting Clevis LashingMarineBarrel-pinBlankeye eye eye eye eye233'