Jacob Chuck Keys - Need to know which are appropriate

[Flightmap]

I have two Jacob Chucks (Drill type) that are tapered arbor chucks

1) the first is a Jacobs #3 (0 to 17/32")

2) Second is a Jacobs #6A (0 to 1/2")

Can anyone tell me the correct Key to purchase for each of these Chucks?

It was interesting that the Jacobs web site did not list either of these drill chucks yet they are stamped as described.

Ken

 

[darkzero]

I found this...

http://www.travers.com/63-003-608

Also found a reference where someone said the K3 does not fit. Please don't blame me if it really does not fit, I don't have any of those chucks so I can't confirm.

 

[4GSR]

K3 key should be correct for both chucks. I have both chucks in my shop. But, not to say Jacobs didn't throw in a few oddballs over the years.:thinking: