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+--- Thread: What are these in my lathe chuck? (/thread-3813.html)
What are these in my lathe chuck? - Wongster - 01-13-2018
Hi Folks,
I recently bought an ER32 collet chuck and am looking at making an adapter plate to mount it on my Proxxon PD400. While inspecting my 3-jaw chucks to see how it is mounted, I saw 3 set screws at the back that aren't holding anything.
Are they there as alignment pins? If not, what purpose do they serve?
[attachment=15469]
[attachment=15468]
RE: What are these in my lathe chuck? - Pete O - 01-13-2018
Judging purely from their position, I would say they are retaining the key spindles. You may find that where you have removed one, the key now unwinds the spindle rather than adjusting the jaws.