Anyone know what the tolerances are for TGP, bearing quality or
accuracy stock? When you need shaft material to slip fit through a
bearing which do you buy? It seems steel suppliers around here all
have differant names for any bar that's not just mill tolerances.

Thank You,
Randy

Remove 333 from email address to reply.

On Fri, 22 Jan 2010 14:22:19 -0500, Randy wrote:

Anyone know what the tolerances are for TGP, bearing quality or
accuracy stock? When you need shaft material to slip fit through a
bearing which do you buy? It seems steel suppliers around here all
have differant names for any bar that's not just mill tolerances.


My supplier specs the OD on 1045 TGP up to 1-1/2" as +.000/-.001.
That's a good fit in pillow block bearings, and the price premium over
1018 or 12L14 cold drawn is not very great. But the standard length
for TGP is 24' rather than 12'. Cold drawn is almost always much
better than the promised tolerance, and a decent fit in pillow blocks,
but obviously you can't count on it.

--
Ned Simmons

On Fri, 22 Jan 2010 14:37:58 -0500, Ned Simmons
wrote:

On Fri, 22 Jan 2010 14:22:19 -0500, Randy wrote:

Anyone know what the tolerances are for TGP, bearing quality or
accuracy stock? When you need shaft material to slip fit through a
bearing which do you buy? It seems steel suppliers around here all
have differant names for any bar that's not just mill tolerances.


My supplier specs the OD on 1045 TGP up to 1-1/2" as +.000/-.001.
That's a good fit in pillow block bearings, and the price premium over
1018 or 12L14 cold drawn is not very great. But the standard length
for TGP is 24' rather than 12'. Cold drawn is almost always much
better than the promised tolerance, and a decent fit in pillow blocks,
but obviously you can't count on it.

Cold drawn is listed as +/-0.003" on one web site.

I can't find the specs on the others on the web sites of the suppliers
I generally go to.


Thank You,
Randy

Remove 333 from email address to reply.

On Fri, 22 Jan 2010 14:22:19 -0500, Randy wrote:

Anyone know what the tolerances are for TGP, bearing quality or
accuracy stock? When you need shaft material to slip fit through a
bearing which do you buy? It seems steel suppliers around here all
have differant names for any bar that's not just mill tolerances.

Thank You,
Randy

Remove 333 from email address to reply.


http://www.seshafting.com/

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