New cole jaws now key too short

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Forum topic by greatview posted 05-15-2019 08:28 PM 447 views 0 times favorited 4 replies Add to Favorites Watch
View greatview's profile


135 posts in 4174 days

05-15-2019 08:28 PM

Topic tags/keywords: lathe cole jaws question

I just received my 12” cole jaws for a Nova chuck. Everything is fine except the key isn’t long enough and tightening the jaws takes forever as I can only turn the key slightly as it now bumps the 12” jaws. Any thoughts?

-- Tom, New London, NH

4 replies so far

View j1440's profile


21 posts in 736 days

#1 posted 05-15-2019 11:55 PM

Extend the shaft—-I would have to see it to suggest haw to do it.
The longer shaft may be a problem when using the chuck without the cole jaws so you may want two chuck keys.

-- Jim, Kingman, Az

View Nubsnstubs's profile


1768 posts in 2747 days

#2 posted 05-16-2019 01:45 AM

If you get a Tail Stock Steady, you won’t have that problem…........ Jerry (in Tucson)

-- Jerry (in Tucson)

View LeeMills's profile


702 posts in 2318 days

#3 posted 05-16-2019 05:06 AM

You don’t say which chuck. If the SN2 you can get extended allen wenches like this 9” arm. Probably even the 6” arm would work since the chuck body is about 4”.

For a G3 I can only suggest shortening the top arms so they will pass as I saw in one video. If you know a welder it would be simple to cut it in half and weld in an extension.

-- We cannot solve our problems with the same thinking we used when we created them. Albert Einstein

View johnstoneb's profile


3167 posts in 3189 days

#4 posted 05-16-2019 01:34 PM

The key for my nova chuck is machined about a 1/4” up so it can go in the chuck at a slight angle.

-- Bruce, Boise, ID

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