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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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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 Gunner "A conservative who doesn't believe? in God simply doesn't pray; a godless liberal wants no one to pray. A conservative who doesn't like guns doesn't buy one; a liberal gun-hater wants to disarm us all. A gay conservative has sex his own way; a gay liberal requires us all to watch and accept his perversion and have it taught to children. A conservative who is offended by a radio show changes the station; an offended liberal wants it banned, prosecuted and persecuted." Bobby XD9 |
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