Frequently Asked Questions & Answers
Bearing Insulation Instructions
Question: Is there a specific procedure to follow when insulating bearings? If so, what is this procedure?
Answer: Following are some guidelines to follow when insulating bearings. Apply sufficient alumina oxide coating to allow for finished grinding to original bearing journal dimensions with a 63 RMS, or better, surface finish. A phenolic sealer must be applied after the initial machining, but before the finish grind.
Suggested insulation material:
Alumina oxide (Metaceram 25010 or equivalent) - P/N 936521.
Bonding material (Metaceram 21021 or equivalent) - P/N 936520
Sealer (Metcoseal AP from "Metco") - P/N 936557.
Vendors:
| Metaceram materials: | Eutectic Castolin | Metcoseal sealer: | Metco Seal |
| TD - 3000 Torch | (800) 826 - 3826 | ||
| Downers Grove, IL | |||
| (800) 323 - 4845 |
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