b'Within Reachreductions to the cutting data.PROCUREMENT4.0 Finding the Sweet SpotWith an extended-reach toolholder, end users must contend with physics. Due to bending forces and fre-quencies, a 12"-long tool never can run as fast or hard as a 2"-long tool, Burley said.Every tool system and spindle has a natural fre-quency, he said. And when you run a tool that is co-Punch Outincident to that frequency, you get a lot of vibration.Catalog One way to avoid the problem is to reduce the spin-dle speed until exiting the coincidence zone.INVENTORY4.0 But even though the instinct is to slow down when something vibrates, there are certain situations where if you go faster, you also run into a sweet zone that (doesnt) get the chatter, Burley said. And extended-reach toolholders have these bands just as much as the shorter ones. Theyre narrower but still exist.For example, he said if a 6"-long tool chatters at 2,000 rpm, a 7"-long tool might not because the 6"-long holder at that rpm is coincident to the natural frequency of the system while the 7"-long holder is out of phase.CTELET US SOLVE YOUR CHUCKING PROBLEMS!Visit us at Stace-Allen.comMANUFACTURING4.0 MODEL R-46003-JAW O.D. AND I.D.FOR TURNING OR STATIONARY WORKHOLDING APPLICATIONSOne chuck will grip I.D.and O.D.with no change to the mechanismrequired.Pull back action in both modes PCompletely sealed ODrawbar operated or with built-in air or Whydraulic cylinder E6 to 1 average mechanical advantage R Minimum loss of gripping power due tocentrifugal force CJaw travel of 0.250" each jaw with H1.5" stroke actuator UPositive pull-back action CHolding power ratio of 5.4:1. KCompletely sealed SServicePROVIDES SPECIAL AIR OR HYDRAULIC CHUCKS, ADAPTER PLATES, STEEL OR ALUMINUM JAW BLANKS, AIR ACCESSORIESYour Local SEND A DETAILED PART PRINT FOR AN IMMEDIATE QUOTATIONMetalworking Specialist STACE ALLEN CHUCKS, INC.2250 W. Minnesota St. Indianapolis, IN 46221www.ptstools.com Telephone (317) 632-2401Fax (317) 637-756360JULY2019 Toolholders.indd 60 6/13/19 4:53 PM'