Author Topic: bearing spacer  (Read 123 times)

Online RDfella

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bearing spacer
« on: 14.03. 2023 11:54 »
Apologies if the title is vague, but that highlights an issue I've had for 30+ years.
Decades ago I had a bearing to fit in an oversize hole (can't now recall how / why that came about) and for a similarly forgotten reason a larger bearing or fitting a sleeve wasn't appropriate. I therefore used a corrugated spacer between bearing and housing but, despite still having some, have spent the last 30+ years trying to identify their proper name (and whether they're still available). Tried googling 'bearing spacer' and 'bearing retainer' (ends up showing Loctite) many times but always to no avail.
Until yesterday, when I came across the packet they're in and noticed - in very faint print - the name on the packet. Tolerance rings.
Just thought I'd mention them in case they're useful for any of our members who may not have heard of them.
'49 B31, '49 M21, '53 DOT, '58 Flash, '62 Flash special, '00 Firestorm, Weslake sprint bike.

Online Greybeard

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Re: bearing spacer
« Reply #1 on: 14.03. 2023 13:07 »
Well, I've never seen those before. I imagine they might be extremely useful.
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Online Rex

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Re: bearing spacer
« Reply #2 on: 14.03. 2023 13:10 »
That looks like a "get you out of trouble" device rather than a long-term solution.

Online morris

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Re: bearing spacer
« Reply #3 on: 14.03. 2023 16:40 »
That looks like a "get you out of trouble" device rather than a long-term solution.
No. They are actually quite sturdy, last a lifetime. They're often used on printing presses on the inking roller shaft drives. They're called slip rings there because they offer some amount of slip without doing any damage to the shaft or frame.
They are a one-time use though. If the roller needs to be taken out for some reason, the ring needs to be renewed.
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Online muskrat

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Re: bearing spacer
« Reply #4 on: 14.03. 2023 18:44 »
G'day RD.
I never knew of those either. I would assume the parts would need to be concentric, machined with the clearance for the Tolerance ring. If a housing or shaft was just flogged out it may not work.
Reminds me of another product for worn shafts going through seals. used many of them on leaky tailshafts.
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Offline chaterlea25

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Re: bearing spacer
« Reply #5 on: 14.03. 2023 22:47 »
Hi All,
I have seen those collars used in electric motors and power tools, Never knew what they were called  *ex*
I assumed that they kept the bearing in place when fitted to plastic or alloy housings that would expand more than the bearing when they got hot  *????*

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