b'If you have to change 50 tools every day using that wrenchby hand, you will have forearms like Popeye.performance benefits. He said an ad- off, he said. They didnt cleanclean and dry before they assemble vantage for a hydraulic holder is that itinside the bore. They didnt dotogether.can accept a reduction sleeve to holdanything. Even when all surfaces are clean a tool with a diameter thats slightlyPulvermacher recommends usingand dry, machining aggressively smaller than the holders bore. brake cleaner or a similar agent tocan still cause tool pullout, even in In addition, he said the reduc- remove any oil and residue from thea shrink-fit holder. One option to tion sleeve, which is like a taper- shank and bore surfaces. prevent a cutter from spinning or less spring steel collet produced toWhen I was working at a shop,pulling out from a shrink-fit chuck a high-quality standard, provides aI would use a CRC contact cleanerduring extreme machining is the damping effect while still maintain- because our company didnt likeHaimer Safe-Lock system, which ing minimal runout. the smell of brake cleaner, he said.has special drive keys in the chuck There is some stackup, but itsIts a great habit to get into forandgroovesinthetoolshank. very minimal and weve had zeroall tools to keep them absolutelyRaun said Iscar is licensed to pro-complaints over the years, Pul- duce tools with the appropri-vermacher said about reduc- ate grind for that system and tion sleeves. With our MQLoffers them upon request in-or our deep-hole drills at 20,stead of as a standard.30 times diameter, we highlyFormillingtoolswitha recommend a hydraulic holderWeldonshank,Doironsaid with a reduction sleeve to getEmuge-Franken offers its pin-better performance and a muchlock anti-pull-out system for higher chance of success. FPC brand chucks.For rough milling within rea- Its basically a dowel pin son, he said YG-1 Tool (USA)thats pressed into the Wel-offers Power E-Hydro hydraulicdon flat in the collet that pre-chucks. The toolmaker reportsventsthetoolfrompulling that the chucks rigid body de- out, he said, which happens sign overcomes side thrust andwhen you do very aggressive reduces deflection while highmilling.rotational torque transfer pre- Nonetheless,evena vents slippage or pullout of ahigh-performancetoolde-cutting tool. signedforextremecutting work wont get the job done if Pullout Prevention its mismatched with a holder. Using a toolholder designedFor example, Raun said he was to prevent slippage or pulloutsurprised to hear that one cus-when aggressively machining,tomer was having problems however, isnt going to com- with such a tool. He assumed pletely do the trick if goodthat it was placed in a robust, housekeeping is lacking. Pul- rigid holder, such as an ER 32. vermacher said if an end userBut after driving two hours to forgets to properly clean theassist with the application, he tool shank and the holder bore,discovered that it was in a small any oil or debris on either sur- ER 16 or 20 collet.face can cause trouble. He put it into the ER 32, he With a hydraulic for sure,said, and the cutting parame-some people get frustratedters that I had recommended with pullout, and we find outEmuge-Franken all of a sudden were working that they didnt wipe the toolA cutout view is shown of an FPC chuck. just fine.CTEctemag.com/cteguide.com35Toolholding.indd 35 9/19/22 11:14 AM'