Lathe Chuck and tool post sizing

skipd1 · Dec 22, 2021

I have a recent acquisition of a 1938 Hendey 12x30 gearhead lathe and I want to correctly size the chuck and quick change tool post for it. This machine is an RS or raised swing model and its maximum swing is 14 1/2 inches. The original purchase invoice in 1938 showed it shipped with a 10 inch 3 jaw chuck. The person I purchased it from included a new 8" 3 jaw and I am wondering if the 10 inch would be a better choice. I also assume a 10 inch 4 jaw would also work? I also assume that a CXA tool post size is okay as well?

Skipd1

4GSR · Dec 22, 2021

I posted a reply over in the "Heavy Iron" Section of the forum.

johnoder · Dec 22, 2021

I also assume that a CXA tool post size is okay as well?

Click to expand...

Worked perfect on my 12 (actual 14 1/2") X 30 Pratt & Whitney. Being actual 14 1/2 it also worked fine with 12" chucks

skipd1 · Dec 22, 2021

Thanks

skipd1

fciron · Dec 22, 2021

Check the actual height from the top of your compound to your spindle center. It's the tool height that is the determining factor for tool posts, not the swing. I confidently bought a BXA for my 13" Sheldon and immediately had to make a riser block.

LKeithR · Dec 22, 2021

thermite said:
...Not as if you are only allowed to ever own but ONE chuck, ONE collet system, or even just ONE type of toolpost...

Yup, anybody who is serious about machining is going to end up with more than one chuck in the arsenal.

I think the OP is confused--he posted this question over on Home Shop Machinist; got a dog's breakfast
of answers and came here to straighten things out.

He got a brand new chuck with the lathe; he
should run with that for a while and figure out it suits his needs, then add what he feels is best for the work
he's doing. I think it would be dumb to give up a good 8" chuck to try something else...

Froneck · Dec 23, 2021

I agree with Thermite. There should be more than one chuck in the arsenal. I have the 12 and 14" Hendeys. All the chuck sizes from 12" to 5" also have a couple of 4" but I chuck them not fitted to the spindle. All other have D1-6 spindle mount. 12" will fit but it's primarily for my 16" P&W. All my scroll chucks have 2 piece jaws. The smaller chucks are good to have because the jaws are smaller, they will chuck smaller ID's

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Lathe Chuck and tool post sizing

skipd1

Cast Iron

4GSR

Diamond

johnoder

Diamond

skipd1

Cast Iron

fciron

Stainless

LKeithR

Stainless

Froneck

Titanium

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