SOHC.co.uk Forums > CB350/400

400/4 Wheel bearing questions ?

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McCabe-Thiele (Ted):
I'm in the process of replacing my front & rear wheel bearings - the new Toyo bearings come with seals fitted to both sides unlike the old ones that just have one side with a built in seal.

Is this just later design - sealed - greased for life?

I can't see the purpose of the lock rings as they are only fitted to one side of the wheels - it seems an odd design to have one side that's effectively a press fit yet the other side has a lock ring?

Bryanj:
Double seale are better Ted.
As to thelock ring it hold the bearing tight against a machined shoulder then the spacer holds the bearings apart as there is no shoulder in the other side, saves on expensive machining

ka-ja:
Sealed bearings used to come double sided when new, one side, the inner shield was removed and some extra dab of grease fed into the wheel centre on building up the wheel.

McCabe-Thiele (Ted):
How difficult are the wheel bearings to fit is it one part in the freezer & heat the bubs a little to make them seat easier?

K2-K6:
"I can't see the purpose of the lock rings as they are only fitted to one side of the wheels - it seems an odd design to have one side that's effectively a press fit yet the other side has a lock ring?"

In addition to Bryan's observations,  by locking that one bearing it positions the wheel as desirable from design (in effect a datum) with the "free" one just supporting wheel load as required. If they machined the free bearing housing to take a locking installation too,  then that would require a shim pack/operation to distance the two bearings within the hub. Failure to match exactly would axially load both bearings or leave them slightly loose depending upon the spacer used.

This design effectively does all it needs without having to accommodate tolerances by shimmery  :)

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