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View Full Version : Procunier vs Tapmatic Heads



RWO
09-12-2010, 02:39 PM
How does one control the torque applied to the tap with a Procunier head, style 1E. The Tapmatic heads have an external adjustment, but I don't see anything on the Procunier and the website isn't any help. Thanks.

RWO

Toolguy
09-12-2010, 03:03 PM
My Ettco-Emrick has a cone drive. It's a steel cone that goes down on a leather cone. The harder you push down on the spindle, the more torque is imparted to the tap. It is extremely controllable and very easy to manage. It's old and ugly but I like it better than my Tapmatic ones. The Procunier may be the same or a similar design.

wierdscience
09-12-2010, 03:13 PM
IIRC the Procuiner and Ettco heads are the same,it's just a friction clutch and the torque is controlled by the amount of feed pressure applied to the machines quill.

Given the two are bascially the same I always bought Ettco since they require no special collets.

The Tapmatic is also a friction unit,but the torque is adjusted by adjusting spring pressure on the clutch.

Tapmatic exploded view,copy and paste into browser -

http://www.tapmatic.com/pdfs/46449_2-XOpInst9-03_rev'd.pdf

Procunier crossectional view-

http://www.rockford-ettco.com/Portals/44/Inst_Man_14000.pdf