1640hd Has Arrived

You might look at the Bison 8" combo (# 7-848-0800), I use one and great all around chuck. Also Firestopper has the same chuck and has been happy with his.. Has a little over a 2" bore and can handle stock down to 0.2", so much smaller than your typical independent of similar size. The repeatability of the scroll is around 0.002" and takes under a minute to dial down to nil TIR using the independent jaws. Probably looking at around 75-80Lbs with a backing plate. QMT does carry Bison, also Ajax Industries and Grizzly usually have decent pricing. I use a Gator backing plate which was about 1/2 the price of the Bison, the D1-5 and D1-6 backing plates do come in 6" sizes if you are looking for a smaller chuck to mount to one.

Impressive turning on that round stock. I mostly use carbide inserts, the CNMG type (80 degree diamond) works great and I use it most of the time, also like the WNMG which I use mostly for aluminum. On a larger machine like yours you can use negative rake tooling, on smaller Hp machine, neutral rake takes less Hp, so I use CCMT and CCGT types.
 
I know several folks who mount small chucks inside the jaws of their big 4 jaw, voila set tru, very low cost. If you want to use carbide as low speeds and small depth of cut, I suggest a hi positive uncoated insert without a large radius. Even the lowly TPG will do the job.

nice lathe btw
michael
 
mksj said:
You might look at the Bison 8" combo (# 7-848-0800), I use one and great all around chuck. Also Firestopper has the same chuck and has been happy with his.. Has a little over a 2" bore and can handle stock down to 0.2", so much smaller than your typical independent of similar size. The repeatability of the scroll is around 0.002" and takes under a minute to dial down to nil TIR using the independent jaws. Probably looking at around 75-80Lbs with a backing plate. QMT does carry Bison, also Ajax Industries and Grizzly usually have decent pricing. I use a Gator backing plate which was about 1/2 the price of the Bison, the D1-5 and D1-6 backing plates do come in 6" sizes if you are looking for a smaller chuck to mount to one.

Impressive turning on that round stock. I mostly use carbide inserts, the CNMG type (80 degree diamond) works great and I use it most of the time, also like the WNMG which I use mostly for aluminum. On a larger machine like yours you can use negative rake tooling, on smaller Hp machine, neutral rake takes less Hp, so I use CCMT and CCGT types.
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I completely agree, the Bison is a "golden" choice, fully capable of repeated results and just heavy enough to remove/install without crapping your shorts. The real magic is in the two custom made T handles allowing fine tuning is short order. This chuck would certainly compliment that beautiful lathe you have!
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I think I'm going to save my pennies and get the 12" version of that combination chuck. I would like a chuck to leave on 90% of the time.
The bison seems to be an awesome chuck. Everyone seems to like there's.
 
Have you looked at Gator chucks? Very similar to Bison at a much better price point. I purchased an 8in 6 jaw set true type from http://www.allindustrial.com/lathe-tools-c-381/lathe-chucks-c-381_382/ Great prices and fast free shipping. They have both the forged steel & semi-steel types depending on you speeds & needs.

Gator PA 12-1/2" 6-jaw Adjustable Scroll Chuck $1,563.12 http://www.allindustrial.com/lathe-...1212-6jaw-adjustable-scroll-chuck-p-3813.html

Cmesler said:
I think I'm going to save my pennies and get the 12" version of that combination chuck. I would like a chuck to leave on 90% of the time.
The bison seems to be an awesome chuck. Everyone seems to like there's.
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I have looked at gator chucks. They have a great price point and being a bison clone I'm sure they work excellent. I'll have to consider them when the time comes. I've got plenty of time to research.
 
Rich V said:
Have you looked at Gator chucks? Very similar to Bison at a much better price point. I purchased an 8in 6 jaw set true type from http://www.allindustrial.com/lathe-tools-c-381/lathe-chucks-c-381_382/ Great prices and fast free shipping. They have both the forged steel & semi-steel types depending on you speeds & needs.

Gator PA 12-1/2" 6-jaw Adjustable Scroll Chuck $1,563.12 http://www.allindustrial.com/lathe-tools-c-381/lathe-chucks-c-381_382/pa-series-adjustable-c-381_382_414/6jaw-2pc-ilhard-reversible-jaws-c-381_382_414_417/gator-pa-1212-6jaw-adjustable-scroll-chuck-p-3813.html
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I would respectfully disagree with the above quote. I bought a 8" Set Tru Gator chuck last year, it is a joke compared to a Bison, its made in China for one, comes with poorly ground parts and had grinding grit in it. None of the 3 bison chucks I have bought new had issues at all and were precision devices which the Gator clearly is not. I will agree that allindustrial has great prices but a great price on a turd still leaves you with a turd.

Hopefully you had better luck. I would not buy a Gator chuck at any price even with free shipping.

michael
 
Buy once, cry once. A 12" chuck, your back up in weight, prolly in the 115 lb range plus back plate. She'll look right at home on that monster lathe:D.
 
Cmesler said:
I believe I'm going to have to install a dedicated crane over the lathe to switch them out.
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First....nice machine! Concerning the dedicated crane, I was about to do that for my lathe but ultimately decided to buy a 2 ton cherry picker. For me it was a good decision because it is much more versatile. I use it for changing out the heavier chucks on the lathe, setting up the rotary table on the mill, loading or unloading heavy stuff from my truck and even used it for it's intended purpose.....removed and replaced a couple of engines. Just some food for thought.
Enjoy that new machine.

Ted
 
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