Mounting motors and speed reducers can be an expensive and challenging task, fabricating structurally sound foundations and incorporating flexible couplings to deal
with shaft misalignment issues. Even when the engineering is done and the money spent, your troubles are not over. There are issues associated with assembling the entire system in the field, not to mention the ongoing need to replace worn flexible coupling elements and pounded out keyways. And forget about getting the mounted drive apart for service once the flexible coupling hubs have fretted and corroded to the shaft. That is, unless you are using a B-LOC WK Rigid Coupling by Fenner Drives.

WK Rigid Couplings are external keyless locking devices that simultaneously transmit high torques and bending moments that allow your drive to be overhung shaft mounted. By using a B-LOC WK Rigid Coupling and a simple torque arm (to prevent the mounted drive from rotating), you completely eliminate the need for structural foundations since the drive hangs off the end of the shaft. As a result of this ingenious system, shaft alignment issues are gone and consumable flexible coupling elements a thing of the past.

Advantages of B-LOC WK Couplings:

Keyless, rigid, zero backlash coupling
Transmits high torque and bending moments
Eliminates the need for costly mounting brackets and structural support
Compact, double taper design with self-releasing tapers for easy removal
Exceptional concentricity
Installs right over existing keyways and splines
Not affected by shock or reversing loads
Easily accommodates shaft sizes, both inch and metric, up to 4 1/4" (108mm)
Allows coupling of different shaft sizes

Parameter Name	Parameter Value
Type	flexible rigid
Other characteristics	torque compact shaft-hub double
Installation system	flange