0.18 Diameter
Clearance Holes
For Access To
Set Screws
Motor/Prime Mover
Pulley
Clutch
Clutch Units
HC6-58 and HC6-34
Clutch units are designed to fit NEMA 56C motors with keyed 5/8” or 3/4” output shafts.
1.
Drill two 0.18 diameter clearance holes in sheave or pulley 90º apart for access to set screws in
clutch shaft.
2.
Counterbore sheave or pulley to a diameter of 2.442/2.445 inches to permit piloting on outer
diameter of clutch bearing. Secure sheave or pulley to clutch using three 1/4-20 socket head cap
screws and lockwashers.
3.
Mount and firmly secure clutch on motor or prime mover output shaft as shown in Figure 2.
4.
Align per timing-belt or drive-belt manufacturer’s specifications.
Figure 2
Clutch Coupling
HC6-58 and HC6-34
Mounting Requirements: This will require an adapter (not supplied) and a coupling (not supplied).
1.
Mount clutch to motor or prime-mover output shaft.
2.
Make up and secure output shaft adapter to clutch using 1/4-20 socket head cap screws. Couple
input shaft adapter to load, using a shaft coupling (see Figure 3). Follow coupling manufacturers
mounting and alignment instruction, to minimize misalignment and maximize Perma-Tork life.