Techniks 17140-1/4 End Mill Holder BT40 1/4 Inch Bore

Product Description

The TECHNIKS 17140-1/4 is a BT40 taper shank end mill holder designed for use in CNC machining centers that accept the BT40 spindle interface. It features a 1/4 inch bore diameter and a 2.5 inch projection, positioning the cutting tool at a consistent, repeatable distance from the spindle face. Overall length is 5.075 inches. The nose diameter measures 25/32 inch. This holder is installed by machinists and toolroom technicians as part of a precision toolholding setup for milling operations.

This end mill holder is suited for vertical and horizontal CNC machining centers equipped with a BT40 spindle taper. The 1/4 inch bore accommodates standard shank end mills and other round-shank cutting tools of that diameter. With a 2.5 inch projection, it provides clearance for a range of workpiece geometries and fixturing configurations commonly encountered in production and job-shop environments.

Key Features

• BT40 taper shank for use in BT40-compatible CNC spindles
• 1/4 inch bore diameter for standard round-shank end mills
• 2.5 inch projection for consistent tool reach and clearance
• 25/32 inch nose diameter
• 5.075 inch overall length
• No through-coolant configuration

Compatibility

Designed as a direct-fit toolholder for CNC machining centers equipped with a BT40 taper spindle interface and standard pull-stud retention systems.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the spindle and toolholder tapers are clean and free of chips or contaminants before seating the holder. Use a properly rated torque wrench and the appropriate retention knob when securing the pull stud. Never exceed the spindle speed rating of the machine or toolholder assembly.