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Posted by Bernard Arnest on April 28, 2006, 2:20 am
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Hi,
I was looking at roller needle bearings to use in wheels. I
didn't realize, believe it or not, that many of the heavy-duty casters
come with needle bearings. Cool, saves time and $ :-)
So, to double check-- with a ball bearing, the shaft is locked into
the bearing with a locking collar or otherwise. But with needle
bearings, there is no inner raceway, the rollers are left exposed. So,
if the ID is 1", can I just slip a 1" carriage bolt through and bolt
the caster to whatever surface I need it hanging off of? Or is there a
press fit of sorts with the rollers?
thanks!
-Bernard Arnest
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Posted by bfairey on April 28, 2006, 5:48 am
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the bolt thru will work but will wear out unless you case harden it.
Brian.
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Posted by Karl Townsend on April 28, 2006, 7:02 am
Please log in for more thread options > the bolt thru will work but will wear out unless you case harden it.
Man, it would take a long time. I've got a bolt with needle bearings on my
irrigation traveler wheels. It goes several miles per year and its ten years
old. Still no visible wear.
--
<(©¿©)> An apple a day keeps the doctor away.
Two apples a day gets the doctor's OK.
Five a day makes you a fruit grower like me.
Karl Townsend
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Posted by Brian Lawson on April 28, 2006, 7:51 am
Please log in for more thread options Hey Bernard,
As with many products, options change with size. What is it that you
have? Are they "loose" and held only by a cage arrangement, or are
they packed into an OD sleeve? Lots of them come with an external
thick "skin", like for a U-joint or for press in place. I believe
that for some uses in some sizes, Torrington needle-bearings can be
purchased with separate sleeves for both OD and ID. This allows use
on surfaces (both the shaft and the housing) that may either not be
metal, or that are too rough for some reason to use, or other reasons
I suppose. But I don't think that they are available for all sizes,
so check with the bearing supplier.
Take care.
Brian Lawson,
Bothwell, Ontario.
XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
wrote:
>Hi,
>
> I was looking at roller needle bearings to use in wheels. I
>didn't realize, believe it or not, that many of the heavy-duty casters
>come with needle bearings. Cool, saves time and $ :-)
>
> So, to double check-- with a ball bearing, the shaft is locked into
>the bearing with a locking collar or otherwise. But with needle
>bearings, there is no inner raceway, the rollers are left exposed. So,
>if the ID is 1", can I just slip a 1" carriage bolt through and bolt
>the caster to whatever surface I need it hanging off of? Or is there a
>press fit of sorts with the rollers?
>
>
>
> thanks!
> -Bernard Arnest
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Posted by Bernard Arnest on April 28, 2006, 11:12 am
Please log in for more thread options Hi,
I'm unsure. I was just going to buy a heavy-duty caster, remove the
mount, and rebolt it to my machine. It is presumably already solidly
mounted into the caster. Whether the ID is open or not shouldn't
matter, I'm guessing?
thanks!
-Bernard
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