Clamping, Workholding & Positioning - BTC ZERO-SET 3JAW CHUCKS,3 Jaws, 12 Inch Diameter, Self Centering Manual Lathe Chuck. Related Products Buck Chuck Company B Buck Chuck Company BS Bison Buck Chuck Company BS Price: $1, TXMAS Eligible. Add: Price: $2, TXMAS Eligible. Home > MANUAL CHUCKS & JAWS > BTC Lathe Chuck > BTC Zero Set Chucks TIR BTC Zero Set Chucks TIR BTC 4" Zero Set •3-Jaw Chucks with Top Reversible Jaws. Regular price: $ Sale price: $ BTC 5" Zero Set •3-Jaw Chucks . manual chucks: bvc style (semi-steel body) adjust-tru 3-jaw and 6-jaw chucks: atsc style (forged steel body) adjust-tru 3-jaw and 6-jaw chucks: extra heavy duty oil country chucks 3-jaw and 4-jaw chucks: power chucks: solid power chucks 2-jaw clt series and 3-jaw cl series: hollow center power chucks 2-jaw opt series 3-jaw op series.
Btc manual chucksCushman | Manual Chucks
I cannot comment on whether the heavy chucks pose a bearing wear issue. Cushman and Skinner used to be USA, but these are now overseas as well. The forged steel Cushman 3-jaw and forged steel Skinner 4-jaw chucks were standard equipment on Monarch 10EEs. Hardinge's 5" 3- and 4-jaw chucks were made for it by Pratt Burnerd in England.
Buck used to make chucks here, but these, too, are now overseas. Bison makes a decent chuck. Due to strikes in Poland, availability can be spotty at times. The Poles have proved to be good suppliers. When there was a shortage of engine blocks for a certain Electro-Motive diesel engine E , Polish factories were able to make complete blocks equal to EMD's own.
I did not know about btc now made in china I've got a 6" CNC chuck and an 8" 3 jaw. The 3 jaw will repeatedly grab work within. I am very pleased with the Bison chucks, they are well made and should last a long time.
I am pretty sure the 8" is steel, but not certain. I also have a Buck 6" 6 jaw chuck, the Buck is an older model with solid jaws, but it sure is a nice chuck. I had a BTC 6-jaw that I sold. It was good, but not as nice as my equivalent Bison. I have a 6" and a 12" bison, for my southbend. Both will hold. I would buy a bison again, John.
I also cast my vote for Bison. I would not recommend buying a chuck made in China. I have 3 Bison chucks for my South Bend 10K lathe - 5 and 6 inch three jaw, and 6 inch four jaw. IMHO they are well made, especially for the money.
They are all "semi-steel", but with hardened jaws and scrolls, and the 3 jaws with two piece reversible jaws are very accurate for a non set true type, similar to what others here have stated. I also have a couple of Chinese made chucks - they are junk, or close to it. Maybe in a few years the Chinese stuff offered to us little guys will be OK, but right now most of it sucks, at least in my limited experience, and I wouldn't buy Chinese again unless there was no reasonable alternative.
Thanks for the info. I will buy a bison then. Now Just to figgure out if the steel is I dont suppose the steel version independant jaw chuck would be any more precise then on a cast chuck Having been burned on generic brand Made in China chucks, I now buy nothing but Bisons.
I have several and am very pleased with their quality. Prices of Bison are going up drasticly comming year At least in Europe So if you can buy old stock for old prices I would not hessitate Peter. Tos Svitavy are made in the Czech Republic and are as good as Bison, they were a little cheaper than Bison but in the last few years have risen in price to match the British, German and Japanese units. Bison are the best buy in my opinion, but also worth considering are the Taiwanese "Strong" chucks; serious kit at a reasonable price.
Not usualy a problem except for cast iron chucks used on larger diameter high speed lathes. They have been known to explode when run far beyond their rated speeds. I'm not aware of any problems in this regard in connection to smaller chucks the sizes mentioned here, but I have to wonder if chinese cast iron chucks are even rated for max speed. Do I trust the quality control in their casting processes?
Cast Iron. Originally Posted by lwbates. All lathe chucks have an inherent speed limit. For Maximum Bit Shank Size. For Bit Shank Type. Jacobs Taper Number. Thread Size. For Minimum Bit Shank Size. View catalog pages 4.
Send Cancel. How can we improve? Lathe Chucks. Machinable Lathe Chuck Jaws. Hardened Lathe Chuck Jaws. Lathe Chuck Jaw Nuts. Three-Jaw Lathe Chucks. Drill Chucks. Keyless Drill Chucks with Integral Arbor. Service Kits for Jacobs Drill Chucks.