Spindle surges on tool breakthrough PDF Print E-mail

Probable Cause



Hydraulic supply pressure too low. Supply pressure should be between 300-500 psi. Regulate.
Thrust required to advance tool at desired feed rate approaches or exceeds thrust developed by Holomatic. Consult drilling speed, feed and thrust charts and compare with developed thrust of unit. Decrease feed rate. Increase input supply pressure. Stagger drill lengths. Decrease size or number of tools.