Workholders - Hydra-Grip Arbors and Chucks
INVOLUTE CHUCKING
  • INTERNAL
  • EXTERNAL
SPUR OR HELICAL GEARS
SPLINES SERRATIONS
A. G. Davis - AA Gage hydraulically expanded arbors and chucks have proven to be the most accurate method for locating parts on the true centerline from either internal or external involute forms. Visualize a "GO" spline gage expanding each tooth radially from center and you will conceive the basic principal upon which Davis hydraulically expanded involute arbors and chucks function.

CHUCKING THREADS
  • INTERNAL
  • EXTERNAL
A. G. Davis - AA Gage hydraulically expanded thread arbors and chucks make possible true chucking on the thread P.D. The principal of operation is to expand a "GO" thread form radially from center to compensate for the thread tolerance