Eriez Xtreme, Reference Manual

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The method shown in Figure 4 requires machining the end of the shaft to a smaller diameter to
allow space for a nylon plastic sleeve. The outside diameter of the sleeve is the same as the
inside diameter of the bearing. This sleeve breaks the electrical connection between the
bearing and the shaft, thus permanently preventing current flow.
WARNING : Do not cut
through the sleeve when tightening the bearing set screw.
Figure 4
Pulley or Idler
Nylon Insulator
Figure 5 shows a method of insulating the complete bearing block from the conveyor frame.
This requires drilling the bolt holes through the bearing block to a diameter large enough to
accept an insulating shoulder washer. The bearing block should also be insulated from the
conveyor frame with non-metallic insulators extending across the base of the block.
Figure 5
Insulating Shoulder Washer (Nylon) Insulating Shoulder Washer
Insulator Material
(Neoprene or Fiberglass)
Figure 6 shows the method recommended by Eriez; this is also the simplest method. It requires
the bearing block on the end opposite the motor to be replaced with a plastic/non-metallic one.
MECH
17