Techniks 43.653.68.175 CAT40 Dual Contact End Mill Holder

Product Description

The TECHNIKS 43.653.68.175 is a CAT40 dual contact end mill holder designed for use in CNC machining centers that require high rigidity and accurate tool positioning. The dual contact shank engages both the taper and the spindle face simultaneously, reducing axial pull-out and improving repeatability compared to standard single-contact tooling. This holder accepts a 1 inch bore tool shank, features a 2 inch nose diameter, and provides 1.75 inch projection from the gauge line. Through coolant capability directs cutting fluid directly to the cutting zone, extending tool life and improving chip evacuation in demanding milling operations.

This end mill holder is suited for production machining environments where dimensional consistency and secure clamping are critical. The CAT40 dual contact interface is commonly specified on mid-range to high-performance vertical and horizontal machining centers. It is appropriate for shops running end mills, flat-bottom tools, and other straight-shank cutters requiring a 1 inch bore. The through coolant feature makes it well suited for deep-pocket milling, long-reach applications, and heat-sensitive materials where flood coolant alone is insufficient.

Key Features

• CAT40 dual contact shank engages both taper and spindle face for increased rigidity and reduced runout
• 1 inch bore diameter accommodates standard straight-shank end mills and cutters
• 2 inch nose diameter provides a robust clamping body for heavy cutting loads
• 1.75 inch projection from gauge line for reach into workpiece features
• Through coolant design delivers cutting fluid directly to the tool tip

Compatibility

Designed for use with CAT40 dual contact spindle interfaces on CNC vertical and horizontal machining centers. Accepts straight-shank tooling with a 1 inch shank diameter.

Installation Notes

This holder is installed and removed by a qualified machinist or tooling technician following the machine tool manufacturer's spindle service procedures. Power down and lock out the machining center before changing tooling in the spindle. Ensure the spindle taper and holder taper are clean and free of chips or coolant residue before seating to maintain proper dual contact engagement. Torque the retention knob to the specification required by the machine tool manufacturer.