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[4]

PM1236 5C Collet Closer upgrade

January Project of the Month [3]
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Grimstod

Iron
Registered Member
Joined
Mar 17, 2018
Messages
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10
#1
So I did a bunch of research before I jumped into this project. Basically I checked the spindle size and made sure the taper was the same. Also looked at the length of the spindle. After all that I figured I could make the Grizzly 5C collet closer for their G3004 lathe work on the PM1236. You can see here a quick run down video of it in place. Works pretty good. The first draw tube Grizzly sent me had a ton of runout and shoot the lathe so I sent them a video and they replaced it. Pretty happy with it. Hope those of you who have Precision Matthews excellent PM 1236 lathe could find this info useful.

 

Silverbullet

Active Member
Active Member
Joined
May 4, 2015
Messages
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1,448
#2
I wouldn't get another lathe without a lever 5C collet set up. My first lathe was a Sheldon and I had the lever collet set with it , I was doing sub contract work in my shop and I tell you the most used item was the collets. Hardly ever had chucks on the lathe. With the right set up oversized machinable collets . Even square hex, rectangle . Special ordered even . I had a tailstock turret that helped too. Time was everything to making money , accuracy and quick turnaround makes the shop name. You did a good job adding those good luck .
 

petertha

H-M Supporter - Premium Member
H-M Supporter-Premium Member
Joined
Jan 15, 2016
Messages
505
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339
#3
I've got a similar sized lathe & 5C collets using conventional collet chuck, but never really seen these lever closers in action. Is the general idea that you part off a completed part, open the collet with the handle, advance the stock, lock the handle, rinse & repeat? Or I guess also load semi finished parts in too. I take it the advantage is time reduction? How is the runout on these units?
 
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