Reach Type 04 Locking Assembly

Reach Type 04 locking assembly is a keyless shaft-to-hub connection for shaft diameters from 19 to 100mm. It is self-centering. Tightening the locking screws converts the clamp load into radial contact pressure on both the shaft and the bore of the mounted component. The result is a zero-backlash interference fit that takes torque, thrust, bending and radial loads, with no keyway or grub screws needed.

Where this product is used

• Mounting sprockets, pulleys, gears and couplings on shafts without a keyway
• Shaft-to-hub connections that need zero backlash
• Drives with fluctuating or reversing loads

Features

• Keyless: no keyways or grub screws required
• Zero-backlash mechanical interference fit
• Carries torque, thrust, bending and radial loads
• Pressure is distributed evenly around the shaft and hub
• Self-centering design
• DIN 912 12.9 locking screws
• 25 sizes, shaft diameters 19 to 100mm
• Torque, axial force, pressures and screw details for every size

Key specifications

Fitting and use

Fit the assembly between a clean shaft and hub bore, then tighten the locking screws to the tightening torque for the size, working evenly around the assembly.

Choosing the right option

Choose the size from the shaft diameter (d) and the hub bore, which matches the outside diameter (D) of the assembly. The d x D size is shown in the variant selector.

Check that the transmissible torque and axial force suit the load on the drive, and the shaft and hub are strong enough for the contact pressures given.

See also: Reach Type 01 locking assembly, Reach Type 02 locking assembly, Reach Type 07 locking assembly.