At indirect drives the center lines of the driving and driven side are not on the same axis. Every safety couplings for indirect drives have a mounting flange equipped with six metric threads. Toothed belt disks, gears, flanges or other extensions with high concentricity- and planning precision can be attached to the coupling flanges.

• Adjustable disengagement torque
  
• Very low residual moment
• Backlash-free
• High repetition accuracy
• Maintenance-free
• Automatic re-engagement after 360°
• Reliable (positive) and fast disengagement
• Very low mass inertia torque

FHW-A

The lightweight of the safety couplings: FHW-A. They are used where ease plays an important role. Because of the use of aluminium, this clutch has a very low moment of inertia.

• Entirely of aluminum and stainless steel
• Resistant coated
• Low weight
• Very low mass moment of inertia

FHW-B

The thousands of times used FHW-B comes standard with keyway and sealed deep groove ball bearings (with keyway and groove ball bearing). The hardened functional parts guarantee countless cycles and high reliability.

• With keyway and deep groove ball bearing
• Very low residual moment
• Low mass inertia torque

FHW-D

Radial space-saving and yet it meets all the requirements: FHW-D. By using a needle-camp instead of a deep groove ball bearing cluthch outer Ø is relatively small (with keyway and needle roller bearing).

• With keyway
• Small diameter by use of needle roller bearing
• Adjustable disengagement torque
• Very low residual moment
• Low mass inertia torque

FHW-F

The clamping hub FHW-F does not require machining of the shaft for keyways etc. With easy installation and high reliability proven a thousand times (with clamping hub).

• Easy assembly with clamping hub
• Very low residual moment
• Low mass inertia torque
• All working parts hardened

FHW-H

Coupling with adjustable residual moment (holding brake). This is used if the torque is only reduced and must not completely be interrupted in a case of collision. This often happens with screw driven hoisting applications (adjustable residual moment, brake with radial clampling hub).

• Adjustable residual moment (Brake)
• Low mass inertia torque
  
• All working parts hardened