Working with pulley bearing

On Mon, 19 May 2008 21:14:14 -0700, "ScottM" <no DeleteThis @no.com> wrote:

>Its best to use a press but yes it will come out. Your best bet though is to
>just by the pulley, thy arent that expensive. If you do change it make sure
>to stake the new one in. ......Just buy the pulley......fyi :if it's wooden
>dowel, it will probably break first. Buy the pulley, they are a dime a
>dozen.

Sho'ly, sho'ly. Dime a dozen.

>Did I mention, buy the pulley?

Maybe $30.

I got it out with the dowel, a vise, a propane torch, and a hammer.

If it's really advisable to buy the whole unit, I'll find out
before it's over.

Thanks, anyway.

P

>"Puddin' Man" <puddingDOTman DeleteThis @gmail.com> wrote in message
>news:fg443415jk8cqbu84quupgb2128l0opg8s@4ax.com...
>>
>>
>> I had the hi-pitched squeal when starting '94 TBird LX V8. Appears to be
>> the idler-arm pulley bearing. A long time ago, Lugnut was good enough
>> to render tips on bearing replacement. I'm way behind the time curve,
>> but ...
>>
>> Bearing is marked NTN 6203LH
>>
>> I looked the pulley/bearing over, decided I should be able to remove
>> bearing. Juiced it both sides with liquid wrench, tapped, waited.
>> Adjusted vise jaws just so, placed pulley and short length of
>> 1.25 " dowel in center, and started hammering.
>>
>> It wouldn't budge.
>>
>> Should I wail on this thing? Should the bearing come out without
>> fragmenting the dowel?
>>
>> Thx,
>> Puddin'
>>
>> " ... and the bees made honey in the lion's head."
>> - from "If I Had My Way", Blind Willie Johnson
>

" ... and the bees made honey in the lion's head."
- from "If I Had My Way", Blind Willie Johnson
 >> Stay informed about: Working with pulley bearing 

If you do manage to get the bearing off and the bracket is still in one
piece, here's some advice to make the bearing reinstall a little less
painless. Put the new bearing in the freezer overnight before you reinstall
it. That way, it will have shrunk a bit and should go back in much easier
with less force. This is ideal especially when working with wheel/hub
bearings and in any case where you don't have a press to work with.

Good luck,
Sharky
 >> Stay informed about: Working with pulley bearing 

BearingsOn Tue, 20 May 2008 20:25:45 GMT, "Sharky" <cl_8ball DeleteThis @hotmail.com> wrote:

>If you do manage to get the bearing off and the bracket is still in one
>piece, here's some advice to make the bearing reinstall a little less
>painless. Put the new bearing in the freezer overnight before you reinstall
>it. That way, it will have shrunk a bit and should go back in much easier
>with less force. This is ideal especially when working with wheel/hub
>bearings and in any case where you don't have a press to work with.

Good advice, thanks.

There's a pretty good discussion of the subject at:

http://www.modularfords.com/forums/showthread.php?t=32733

Anybody know where I can get a good replacement bearing?

Bearing - NTN 6203LH

NAPA can cross-ref a 6203 to a SKF bearing. I dunno it's the
same. Doesn't look like Autozone or Advance has it.

Thx,
P


" ... and the bees made honey in the lion's head."
- from "If I Had My Way", Blind Willie Johnson
 >> Stay informed about: Working with pulley bearing 

On Tue, 20 May 2008 18:47:58 -0500, Puddin' Man
<puddingDOTman RemoveThis @gmail.com> wrote:
>Bearing - NTN 6203LH
>
>NAPA can cross-ref a 6203 to a SKF bearing. I dunno it's the
>same. Doesn't look like Autozone or Advance has it.
>
> Thx,
> P

That'll work. Its exactly the same bearing... All the bearing
manufacturers use the same numbering system for their
bearings...

SteveL
 >> Stay informed about: Working with pulley bearing 

On Tue, 20 May 2008 18:46:05 -0700, pakeha.RemoveThis@not.a.real.address.com wrote:

>On Tue, 20 May 2008 18:47:58 -0500, Puddin' Man
><puddingDOTman.RemoveThis@gmail.com> wrote:
>>Bearing - NTN 6203LH
>>
>>NAPA can cross-ref a 6203 to a SKF bearing. I dunno it's the
>>same. Doesn't look like Autozone or Advance has it.
>>
>> Thx,
>> P
>
>That'll work. Its exactly the same bearing... All the bearing
>manufacturers use the same numbering system for their
>bearings...

Then what's the "LH"?

On front - NTN 6203LH
On end of race - NTN6203EX4CSIS Made in Canada

P

" ... and the bees made honey in the lion's head."
- from "If I Had My Way", Blind Willie Johnson
 >> Stay informed about: Working with pulley bearing 

On Tue, 20 May 2008 21:56:01 -0500, Puddin' Man
<puddingDOTman RemoveThis @gmail.com> wrote:
>On Tue, 20 May 2008 18:46:05 -0700, pakeha RemoveThis @not.a.real.address.com wrote:
>>On Tue, 20 May 2008 18:47:58 -0500, Puddin' Man
>><puddingDOTman RemoveThis @gmail.com> wrote:

>>>Bearing - NTN 6203LH
>>>
>>>NAPA can cross-ref a 6203 to a SKF bearing. I dunno it's the
>>>same. Doesn't look like Autozone or Advance has it.
>>
>>That'll work. Its exactly the same bearing... All the bearing
>>manufacturers use the same numbering system for their
>>bearings...
>
>Then what's the "LH"?
>
>On front - NTN 6203LH
>On end of race - NTN6203EX4CSIS Made in Canada

You really need to look it up in the catalog of the bearing maker to
know for sure. WAY too many variables.

The 6203 covers the basic dimensions, the letters after it denote
things like seal or shield type, lubricant type, speed ratings,
temperature ratings, tolerance, etc. And they use different code
letters.

You can use a slightly different variant if you know exactly what
the changes will do to the finished product. If the bearing is inside
a sealed enclosure you do not need a fully sealed bearing - one with a
simple dust shield or open ends will work fine.

You can sometimes go up in precision level, but the costs jump so
dramatically so you only do that in an emergency. High precision
bearings like those used in a lathe tailstock can easily cost 10X the
same bearing in a low precision variant.

--<< Bruce >>--
 >> Stay informed about: Working with pulley bearing 

"Puddin' Man" <puddingDOTman DeleteThis @gmail.com> wrote in message
news:0l37341qbgl7n4ed4hrie00137iehqpsud@4ax.com...
> On Tue, 20 May 2008 18:46:05 -0700, pakeha DeleteThis @not.a.real.address.com wrote:
>
>>On Tue, 20 May 2008 18:47:58 -0500, Puddin' Man
>><puddingDOTman DeleteThis @gmail.com> wrote:
>>>Bearing - NTN 6203LH
>>>
>>>NAPA can cross-ref a 6203 to a SKF bearing. I dunno it's the
>>>same. Doesn't look like Autozone or Advance has it.
>>>
>>> Thx,
>>> P
>>
>>That'll work. Its exactly the same bearing... All the bearing
>>manufacturers use the same numbering system for their
>>bearings...
>
> Then what's the "LH"?

"Light contact rubber seal"

Here's more than anyone will ever need to know about NTN bearings:
http://www.ntn.ca/pdf/A1000/A1000_Radial.pdf

SC Tom
 >> Stay informed about: Working with pulley bearing 

On Tue, 20 May 2008 21:56:01 -0500, Puddin' Man
<puddingDOTman RemoveThis @gmail.com> wrote:

>On Tue, 20 May 2008 18:46:05 -0700, pakeha RemoveThis @not.a.real.address.com wrote:
>
>>On Tue, 20 May 2008 18:47:58 -0500, Puddin' Man
>><puddingDOTman RemoveThis @gmail.com> wrote:
>>>Bearing - NTN 6203LH
>>>
>>>NAPA can cross-ref a 6203 to a SKF bearing. I dunno it's the
>>>same. Doesn't look like Autozone or Advance has it.
>>>
>>> Thx,
>>> P
>>
>>That'll work. Its exactly the same bearing... All the bearing
>>manufacturers use the same numbering system for their
>>bearings...
>
>Then what's the "LH"?
>
>On front - NTN 6203LH
>On end of race - NTN6203EX4CSIS Made in Canada
>
> P

Okay, the 6203 bearing has a 17mm bore, and a 40mm OD,
the L stands for sealed, and I'm guessing the H stands for
high speed lubricant. Most of what I deal with are motor
bearings, and this one is popular with most manufacturers...

The second number is probably the identifier for the batch
and who it was sold to...

You can sniff around on the Timken bearing site and get
way more info than you can use...

SteveL
 >> Stay informed about: Working with pulley bearing