| Diagram | Fig. 6 — Gearbox: Inner Cover · ref 27 |
| Subsystem | gearbox |
| Listed in parts books | 1975 |
Norton Bearing, Mainshaft
A Norton gearbox mainshaft bearing from the inner cover assembly.
This is a mainshaft bearing for a Norton gearbox, listed in the catalog under the inner cover section. It's a small but important piece of the transmission internals, holding the mainshaft true inside the gearbox casing so the shaft runs without excess play or wobble as it turns.
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The catalog record ties this part to a single appearance in 1975 gearbox listings, so we don't have a broader fitment history to draw on beyond that. If you're rebuilding a gearbox and matching parts against your own parts book, check the inner cover diagram against what you've got apart on the bench.
Call the shop if you want us to confirm this is the right bearing for the gearbox you're working on before you order.
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