Spindle recycles but does not advance beyond the last stroke PDF Print E-mail

Probable Cause



Drill. Check cutting edges. Replace.
Advance cam bar friction adjustment. Check the adjustment. Adjust - Ref. Cam Bar Bul.
Worn parts and/or cam bar. Replace - Ref. Cam Bar Bul.
  Check for interference w/ driver sleeve. Correct or replace. Ref. Bul.
Low air pressure Air pressure should be above 50 psi. Regulate per Eng. Data Bul.
Thrust required to advance tool at desired feed rate approaches or exceeds thrust developed by air cylinder. Consult drilling speed, feed and thrust charts and compare with developed thrust of unit. Decrease feed rate. Increase output air pressure. Stagger drill lengths. Decrease size or number of tools. Substitute with hydraulic powered holomatic unit.