Chuck Arbor Question

[Christopher K. Hartley]

I have a Jacobs No. 32 3/8 chuck that Id like to get an arbor for to use as an extra. I need MT3 but the one I have for the new chuck I bought is too big on the chuck side. How do you know which number to get? I looked on the Grizzly site and discovered identification like "MT3/JT3". They have different "JT" numbers but I don't know which one is right for my chuck. Does anyone know?:confused: I thought I'd put this here due to it being lathe oriented.

[Dale Bright]

Try this site. www.LittleMachineShop.com (http://www.LittleMachineShop.com)
They have what you need and some cross references. The prices are good.

[Christopher K. Hartley]

Try this site. www.LittleMachineShop.com (http://www.LittleMachineShop.com)
They have what you need and some cross references. The prices are good.Thanks Dale.:)

[Harry Goodwin]

Dale your little metal link has instructiions for use of a caliper with some ideas I never thought of. A great site and help with my new calipers. Harry