Elliot e20 chuck. Chuck key size?

[Gareth J]

Have an Elliot E20-3JT chuck I need a key for.

Its bigger than anything I have floating around and there seems to be some choice of keys available.

The pilot hole is around 9.5mm diameter. Would it be crazy to assume that with a Jacobs taper it might use a Jacobs key?

Cheers!

 

[J.B. Welding]

what is the maximum capacity of the chuck- 3/4"? If so I think most keys suitable for that size will fit. Take it with you to a local engineers supplies shop you'll get sorted out, or take your chances online!

 

[graffian]

I think that's a K4 key, I have a Jacobs 36 with one.
Keys are about a fiver from Cromwells.

 

[Gareth J]

I think that's a K4 key, I have a Jacobs 36 with one.
Keys are about a fiver from Cromwells.

We have a winner! Picked up a genuine Jacobs key and it fits like a glove. Many thanks,
Gareth