View Full Version : Is there a long taper spindle mount smaller than L-00?

06-08-2012, 07:02 PM
A while back I bought a four jaw chuck on Ebay that was advertised as having an L-00 mount. When i got it, it cetainly looked like an L00 mount, but when i tried to fir it, I found that the key in my spindle nose wouldn't fit the keyway in the chuck. As I looked closer, I saw that the diameter of the threads is just a bit smaller than my L-00 mount chucks that I have on hand, and the taper bore is a little bit smaller as well. I have searched the web for L-000 mount but have come up with nothing. Can anyone shed some light on this? If measurements are needed, I can get them this evening when i get home.

06-08-2012, 08:27 PM
Seems not.


http://www.google.com.au/#hl=en&rlz=1W1IRFC_enAU360&sclient=psy-ab&q=l-00+taper&rlz=1W1IRFC_enAU360&oq=l-00+taper&aq=f&aqi=g-K1&aql=&gs_l=hp.12..0i30.5524.26951.0.32595. 325.2860.2-8j2.10.0...0.0.tws39T8WMdY&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.,cf.osb&fp=986283e891b104d4&biw=1920&bih=818

06-08-2012, 08:57 PM
Rivett had proprietary taper very similar to L-00, however I'm not sure if its smaller or bigger then L-00, will have to go and measure.

06-08-2012, 09:03 PM
1/4 inch wide key? I think that's a Rivett 918. About 1/3 of the way down this page:



06-08-2012, 10:34 PM
Thanks fellas!

The Back of the 4-jaw in this picture looks just like the back of the 4-jaw I bought.


So I went downstairs and took a look and sure enough, it says RIVETT right on the face of the chuck. I wonder if someone has a RIVETT lathe they need a chuck for? I really like the chuck itself as it is quite shallow, and would be nice for barrel work through the spindle.

Bob in SoCal
06-09-2012, 01:01 AM
I have a couple of Rivett lathes including a 918, and would be interested in acquiring a 4 jaw for it. I've had somewhat the opposite of your experience, buying a "Rivett" backplate on eBay only to find it was an L00 instead.