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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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#1
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How are chuck keys sized
I decided to get a new chuck key for my DP and, not knowing any better, went
to the Enco site. Well, I didn't buy my DP or its chuck from Enco so I can't match any of their letter-sizes to what I have. What is the normal method for specifying a chuck key size? Isn't it the diameter of the pilot hole? TIA Norm |
#2
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How are chuck keys sized
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#3
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How are chuck keys sized
Good luck. They generally get listed by just a part number. Variables are the pilot size, number of teeth and gear diameter. I have an imported chuck in my lathe that is fine, but the pilot on the supplied key is a bit undersized, so it makes it hard to get good torque on the chuck. I'm in ths same boat on a real nice chuck for my CNC mill. I bought the four size in 1 key style. Found the side that most closely matched on the gear teeth and then installed a bushing to fit the pilot hole. Karl |
#4
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How are chuck keys sized
On Tue, 21 Mar 2006 14:55:57 GMT, "Norm Dresner" wrote:
I decided to get a new chuck key for my DP and, not knowing any better, went to the Enco site. Well, I didn't buy my DP or its chuck from Enco so I can't match any of their letter-sizes to what I have. What is the normal method for specifying a chuck key size? Isn't it the diameter of the pilot hole? TIA Norm Chick designers have a huge database of all chuck keys ever made. When they have to design a new chuck they make sure that none of the existing keys will fit. -- Boris Mohar |
#5
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How are chuck keys sized
Chick designers have a huge database of all chuck keys ever made. When they have to design a new chuck they make sure that none of the existing keys will fit. -- Boris Mohar Hah! They must have been trained by the guys who design oil filters for cars. Dennis |
#6
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How are chuck keys sized
On Tue, 21 Mar 2006 19:50:11 -0500, Boris Mohar
wrote: On Tue, 21 Mar 2006 14:55:57 GMT, "Norm Dresner" wrote: I decided to get a new chuck key for my DP and, not knowing any better, went to the Enco site. Well, I didn't buy my DP or its chuck from Enco so I can't match any of their letter-sizes to what I have. What is the normal method for specifying a chuck key size? Isn't it the diameter of the pilot hole? TIA Norm Chick designers have a huge database of all chuck keys ever made. When they have to design a new chuck they make sure that none of the existing keys will fit. Last chuck key I bought was from milwaukee. The card it came on had a cross reference chart on the back. Gerry :-)} London, Canada |
#7
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How are chuck keys sized
In article , Boris Mohar
writes Chick designers have a huge database And us guys are grateful for it. -- Nigel When the only tools you have are a Bridgeport, a CNC Taig Mill, a Colchester and assorted other stuff, every problem looks like a steam engine. |
#8
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How are chuck keys sized
Other than my power drill (drill motor) chucks, the chucks I use on my
machines are Jacobs, Rohm or Cushman, and require fairly common standard keys. There are keys that are interchangeable between numerous brands, but any time I see keys at flea or garage sales, I usually get them. For lathe owners, keys can be modified easily. Many chuck keys have a removable T-handle pin, then the key body can be chucked in the lathe, and the pilot pin can be modified/turned down, or removed. Those bent L-shaped keys could probably be modified with a drill press. Cut off the pilot pin and drill to fit a hard pin for the size of pilot needed. This might be an alternative to modifying the key holes in the chucks, where the key pinion gear matches, but the pilot is different. This method can also be used to replace those poor-fitting auto-ejecting pilots on some keys. The chuck ring gear/sleeve is somewhat adjustable on some chucks (if only slightly). If a chuck was previously disassembled, the sleeve may not have been pressed back to it's original location (changing the distance from the ring gear to pilot hole). WB ............ Norm Dresner wrote: I decided to get a new chuck key for my DP and, not knowing any better, went to the Enco site. Well, I didn't buy my DP or its chuck from Enco so I can't match any of their letter-sizes to what I have. What is the normal method for specifying a chuck key size? Isn't it the diameter of the pilot hole? TIA Norm |
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