ITC launches super-slim milling chuck

3 July 2017

Now available from Industrial Tooling Corporation (ITC) is the new HMC12J, a super-slim design milling chuck with peripheral coolant supply from BIG KAISER. As a leader in premium high-precision tooling systems and solutions, customers can be confident that the new HMC12J from BIG KAISER will provide optimal machining performance for both heavy and finish end milling tasks.

Delivering high power and precision, BIG KAISER's new Hi-Power Milling Chucks (HMC) achieve powerful clamping and high rigidity for heavy cutting applications. The unique slit design means that the new HMC12J applies the highest gripping force to the cutting tool of any comparable chuck in its class. Due to the inherently stronger construction of milling chucks, the clamping force of these chucks is five to six times greater than standard collet chucks.

The chuck design integrates fine slots and hundreds of needle bearings to ensure precision high-power clamping performance. Despite being designed for heavy cutting, this HMC milling chuck maintains an accuracy of ten microns at a 4xD runout. This remarkable attribute gives the HMC12J the additional flexibility to be used on finishing applications.
The slim yet rigid design of this new chuck brings the external diameter down to an impressive 32mm, the smallest in its class. This was achieved whilst maintaining an uncompromisingly substantial section of 10mm to prevent chatter and deliver cutting security. The maximum jet-through coolant pressure is 70bar.

"Our new HMC12J delivers a market-leading combination of power and precision. For heavy cutting and milling applications, it provides all the rigidity and accuracy needed," says Peter Elmer, CEO at BIG KAISER.

The chuck can be used on machining centers with conventional spindles, making it easy to add to existing tools. In a test, the new HMC12J was compared to a collet chuck. Operating on a DMG MORI NVX 5080 milling machine with a BIG-PLUS BBT40 spindle system, the trial milled C50 steel with a 12mm diameter cutting tool. Conditions were set at V=80m, feed per tooth (fz)=0.092, width of cut (ae)=3.5mm. From this, the depth of cut (ap) was increased until vibration was evident. The result was that the HMC12J could cut to a depth of 22mm before vibration was experienced, which was double the 11mm cutting depth achieved with the collet chuck. For further details on how this new powerhouse can improve your machining performance, contact your local ITC representative.