Pellerin Milnor Corporation 31
Figure 10. Run-out
Views of Axial and Radial Run-out
Legend
1. Axial run-out. This pulley is bent or not perpendicular to the shaft. This condition must not be more than 1 mil
for each inch (0.1 mm for each dm) of the pulley diameter.
2. Radial run-out. This pulley is not circular. This condition must be less than 10 mils (0.25 mm).
3. Bushing
4. Shaft
5. A circle
6. Bushing bolts
7. Sheave
Figure 11. Typical Pulley Assembly
View of Pulley Components
Legend
1. Key
2. Bushing bolts. Tighten bolts in a pattern
that gives the same torque. This will give
minimum axial run-out.
3. Push-off holes
4. Pulley. Measure the radial run-out of the
pulley after you assemble. Make sure that
the center of the pulley is the same as the
center of the shaft.
5. Shaft. Make sure that the shaft is not
bent.
6. Bushing
Belt Requirements
BNUUUM02.C06 0000274605 A.4 A.2 2/4/20 8:08 AM Released
• Replace damaged belts.
• The pulleys must stay aligned when you adjust the belt tension.
• Do not use belts made from cut belts.
Drive Assemblies
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