Festo Belt Drives 2, Industrial Maintenance

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Job Sheet 3 – Variable-Speed Belt Drives
© Festo Didactic 54977-3C
47
9. Install two pillow block bearings on the extrusions, as shown in Figure 37.
Make sure the setscrews on both pillow block bearings are pointing
outwards. Do not tighten the screws yet.
a
Do not install the pillow block bearings on risers.
10.
Take a short shaft and prepare it using the following procedure. This ensures
that the shaft is free of dirt and debris.
 Inspect the shaft for damages and clean up any dirt and debris from the
keyway and the shaft.
 Clean up the edge of the keyway using an emery paper or a fine tooth
file.
 Using an emery paper, clear the shaft from rust and corrosion.
 Make sure that the surface of the shaft and the keyway are clean of
debris using a cloth and a cleaning solvent.
a
Perform this procedure each time you install a shaft.
11. Slide the short shaft through the pillow block bearing located on the same
extrusion bar as the motor.
12. Install a key in the keyseat of the shaft supported by the pillow block
bearings.
13. Take the 120 mm nominal diameter variable-pitch pulley and slide it on the
shaft supported by the pillow block bearings. The shaft-locking setscrew
should be on the motor side.
a
From now on, the pulley on the short shaft will be referred to as the driven
pulley.
14. Wrap the A48 V-belt around the driven pulley.
15. Wrap the A48 V-belt around the driving pulley. Make sure not to roll, bend, or
pitch the belt.
a
If necessary, shorten the distance between both the driving and the driven
shafts. Then bring back the components to their position shown in Figure 37.
16. Slide the short shaft through the other pillow block bearing.
17.
Tighten the setscrews of each pillow block bearing on the flat surface of the
shaft.
Do not tighten the setscrew on any surface other than a flat surface. This may damage the
components.