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Slimmed-Down Milling Chuck with Peripheral Coolant Supply

BIG KAISER has launched the HMCJ, a super-slim milling chuck with peripheral coolant supply, designed to support heavy-duty and finish end milling tasks with power and precision using O1/2" or O12 mm cutters.

The newest, slimmer member of the Hi-Power Milling Chuck (HMC) family features a clamping bore with fine slots surrounded by hundreds of needle bearings, designed for concentric, precise and smooth clamping when the nut is tightened. "The HMCJ applies the highest gripping force to the cutting tool shank of any comparable milling chuck in its class, and five to six times greater compared to collet chucks," said a company spokesperson.

"The slim, yet rigid, design of this new chuck brings the nut diameter down to 1.260" (32 mm), the smallest in its class," said the spokesperson. "This was achieved while maintaining an uncompromising and substantial cross section of .394" (10 mm) to prevent chatter and deliver cutting security. The max jet-through coolant pressure is 70 bar."

Despite being designed for heavy cutting, the HMCJ milling chuck is able to maintain a runout accuracy of ten microns at 4xD, giving it additional flexibility for use on finishing applications. For additional rigidity and accuracy, the CAT and BT interfaces are BIG-PLUS as standard, however, a BIG-PLUS spindle is not necessary to achieve the excellent performance of this chuck. A O32 mm straight shank design is also available.

It is also possible to use smaller diameter milling tools through the use of PJC Reduction Collets. The O.500" HMCJ can then accept O3/8" and O1/4" shanks, and the O12 mm HMCJ can accept O10 mm, O8 mm and O6 mm shanks.

"Our new HMCJ delivers a market-leading combination of power and precision," said Jack Burley, VP Sales & Engineering at BIG KAISER. "For heavy cutting and milling applications, it provides all the rigidity and accuracy needed."

For more information contact:

BIG KAISER Precision Tooling Inc.

2600 Huntington Blvd.

Hoffman Estates, IL 60192

888-TOOL-PRO / 224-770-2999

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