Safety crank (Siku) and ratchet crank (Raku)Lifting Ratchet disc (3) By turning the crank (1) clockwise, all brake parts like friction discs (4), ratchet disc (3) and threaded hub (2) locked to a complete system. All components rotate in the same direction and the ratchet pawls (not shown here) engage alternately in the teeth on the ratchet disc. The load is hold securely in any position. Lowering If the crank will be rotate counterclockwise, the brake opens minimally. The ratchet disc is fixed by the ratchet pawls and does not rotate. The load, which is either on the head or the claw, presses the housing down and causes the brake to close again. This process is repeated continuously when the load is released until the winch is unloaded. With the safety crank (Siku), it is necessary to turn the crank through 360° when lifting and lowering. The ratchet crank (Raku) works like a hand lever on a manual hoist. By switching the switch lever to lifting or lowering, this crank can be used like a ratchet. This is particularly useful in limited space. Furthermore, this type of crank can also be operated through 360°, as the same braking system as the Siku.

Safety crank, zinc-plated • With one-sided braking effect. • The load is held safely at every height. • With folding handle. Crank for rack and pinion jacks STW-F, STW-V, STW-FvB, ZWW, KHB and SCH-W Crank for steel jacks STW-FvB Crank for lifting jack HB-W For ordering the crank of the models STW-F, STW-V, STW-FvB, KHB and SCH-W it takes note to specify the manufacture year, capacity and the dimension of the square!

Crank for steel jacks SJ and RSJ Model Crank for steel jacks STW-F, STW-V and STW-FvB Model Rachet pawl kit for Siku and Raku P13 for 1.5 t, 3.0 t and 5.0 t columbus mckinnon

Hoisting Equipment Rack & Pinion jacks & Cranks Safety spring crank (Sifeku) or safety spring lock with crank handle Crank pinion Lifting and lowering To generate the pre-tension, the spring (3) is manufactured with an oversize in relation to the brake ring (4) and installed. The pre-tensioning torque which is generated corresponds at the same time to the no-load torque. Brake ring (4) Spring (3) Turning the crank (1) clockwise the load will be lifted or supported. Thereby the spring preload between spring (3) and brake ring (4) is increased. In this case, the load is hold in any position up...

Spring loaded safety crank • Without pawl • Recoil proof • Enclosed housing • Weather and temperature resistant. • Braking effect at both ends. • The load is held safely at every height, in the pushing and pulling direction. • Approved by the TUV as an independent crank. • With folding handle. Crank for rack and pinion jacks STW-F, STW-V, STW-FvB, ZWW, GmZ, KHB and SCH-W

Worm gear (ZWW-L) The self-locking worm gear ensures that the load is held securely in any position. Gear — Crank pinion Worm gear Crank for rack and pinion jacks ZWW-L Model Crank with folding handle for rack and pinion jacks ZWW-L (only optional) Model columbus mckinnon