Tooling/Spindle Interface

The BIG PLUS simultaneous dual contact Shrink Fit toolholder line is offered by BIG Kaiser Precision Tooling, Inc. (Elk Grove Village, IL). The toolholders feature high clamping forces, low runout, and a small nose diameter to reduce clearance issues.

The BIG PLUS simultaneous dual contact Shrink Fit toolholder line is offered by BIG Kaiser Precision Tooling, Inc. (Elk Grove Village, IL). The toolholders feature high clamping forces, low runout, and a small nose diameter to reduce clearance issues. The holders are manufactured to the highest standards with the highest quality materials to ensure exceptional runout, without sacrificing clamping force; and are available in inch sizes from ¼” to 1” in CAT40 and ½” to 1.25” in CAT50 tapers. Simultaneous spindle and flange contact greatly enhances rigidity and repeatability, which yields many benefits in higher metal removal rates, higher accuracy, improved surface finish, and extended tool life. It also will minimize vibration to prevent fretting corrosion; eliminate axial movement during high speed operation; and resist cutter deflection, improving accuracy and finish. Dual contact assures the highest precision location of the tool holder in the spindle when using Automatic Tool Change (ATC) for loading tools, positioning the tool holder within 1 micron (0.00004") for repeatability.