Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

 
 
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Default Press and interference fits...Help!

Ive made 6 pairs of spacers...between a driven shaft (both ends) and a
bearing race and each and every time, Ive gotten the OD wrong.
Each and every time..tap on the bearing race..and the ******* slides on.

How the hell does one calculate such a thingy?

This was off a pumping unit gearbox..and the people are starting to look
at me like im an utter bumpkin...which it looks like I am...sigh.

The ID was to have a .002" interference fit..and I accomplished this
with no issues. I machined the OD to be .003 larger than the ID of the
bearing race....and once the bearing race was tapped a couple times..the
damned thing slid on with a tad bit more than hand pressure. Easy with a
small block of wood.

Blink blink....

Anyone got any ideas/help/calcs that would fill in this blank space in
my knowlege?

This is what Ive been machineing parts for...

http://www.datinternational.ca/product.php?punits

Im going to have to get the Clausing 15" lathe running..the Hardinge
HLV-H...is way way too small for most of the work.

I installed a Axelson 20x120 lathe in their shop...but they dont have
3ph yet..or anytime soon...sigh....

This one....

http://cgi.ebay.com/ws/eBayISAPI.dll...m=350318954988



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