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Thread: Drill Arbor Query
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18th September 2012, 04:42 PM #1.
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Drill Arbor Query
I recently won a nice 0 -1/4" Albrecht keyless chuck on Ebay. It has a No.1 Jacobs taper and has a 3/8" straight arbor.
My query is has anyone seen or know where to find a 10 or 12mm straight arbor with a J1 nose taper? I have looked at the offerings on US, UK, French and German Ebay but there is nothing. I have also looked at the manufacturer's website but to no avail.
Albrechts are supposedly the most accurate drill chucks available so I won't jeopardise that accuracy with some home made pretender.
Any suggestions will be appreciated.
BT
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18th September 2012 04:42 PM # ADSGoogle Adsense Advertisement
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18th September 2012, 04:55 PM #2SENIOR MEMBER
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I would give Mick Moyle's Enginers Supplies in Summer Hill, Sydney a try BT. Their phone number is 02 9799 8444, and they are generally pretty good price wise, but the last drill arbor I got there was Chinese, I don't know if that is likely to be a problem for you or not. Nothing wrong with your own efforts from what I've seen Bob.
Rob.
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18th September 2012, 08:39 PM #3
Bob, do you mean that the chuck has a 3/8" threaded end or hole?
I would think that turning your own arbour between centres would be the go - with one of the centres into a chucked 1/4" dia female centre held by the mounted chuck itself.
ALternatively, someone here with a cylindrical grinder oruniversal tool and cutter grinder could grind one between centres the same way....
Cheers,
Joe
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18th September 2012, 08:55 PM #4future machinist
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I will probably be going to Mick Moyles tomorrow if I do I will see if they havje an arbor.
BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE
Andre
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18th September 2012, 11:22 PM #5.
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Hi Joe,
There is no thread. The arbor is simply a round bar with a Jacobs taper on one end. I'm chasing a metric arbor because amongst the ISO 30 collets Charles Stroom sent me from Holland, is a 10 and a 12mm collet. I don't think these collets collapse the way ER collets do and I'm not prepared to wreck one trying to find out. If I have no luck finding a commercial arbour, I could have a crack at a home made version using some PG 4140.
I had to go up to the shed to look at my dividing head. I had the camera. Here is an 0-1/8" Albrecht with the original 3/8" J0 arbor on the left. The sensitive attachment is from Royal in the States, a tasty morsel GQ procured for me.
Bob.
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19th September 2012, 12:24 AM #6.
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19th September 2012, 06:13 PM #7future machinist
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I am afraid that Mick Moyles didn't have a straight arbor. They said to try Blackwoods or turn down a mt2 arbor.
BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE
Andre
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19th September 2012, 06:38 PM #8.
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Thank you Andre.
I imagine you bought something to add to your burgeoning collection.
Bob.
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19th September 2012, 06:49 PM #9Senior Member
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All the adapters out there seem to be imperial for the jacobs taper or metric with a B taper.
How about a 1/2" and turn the straight shank down 12mm between centres?
Nev
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19th September 2012, 07:11 PM #10.
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Nev,
I looked at the Albrecht German website and it is as you have stated, B taper for a metric cylindrical arbor. I might be safer four jawing a bit of ground bar and turning a J1 taper on the end. I could even fool around for a day and a half with my tool post grinder and grind the taper.
Bob.
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19th September 2012, 08:11 PM #11Distracted Member
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19th September 2012, 08:54 PM #12Philomath in training
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Depending on how good the T&C grinder is, it may be easier to set up a 1/2 " arbor on centres and grind it down to 12mm. Trying to set up a J1 taper could be difficult without several trial pieces.
Michael
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19th September 2012, 09:13 PM #131915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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