Accupro 775226 End Mill Holder BT40 3/4 Inch Through Coolant

Product Description

The ACCUPRO 775226 is a BT40 taper shank end mill holder designed for CNC machining centers that use the BT40 spindle standard. It accepts a 3/4 inch bore and provides a 1.75 inch projection from the spindle face to the tool seat. The holder features through-coolant capability, delivering cutting fluid directly to the tool tip via both through-spindle and DIN flange coolant paths. With a TIR of 0.0002 inch and a balance rating of 30,000 RPM, it is suited for high-speed, precision milling operations. Machinists and CNC setup technicians install this holder in production and job-shop environments alike.

This end mill holder is intended for use in BT40-equipped vertical and horizontal machining centers across light and heavy production environments. The through-coolant design makes it well suited for deep-pocket milling, high-feed roughing, and applications where heat buildup at the tool tip is a concern. The drawbar thread size is M16 x 2.0, which is standard for BT40 tooling systems. It ships in a package quantity of one.

Key Features

• BT40 taper shank for direct spindle mounting on BT40-standard machining centers
• 3/4 inch bore diameter accepts standard end mills and cutting tools
• 1.75 inch projection for clearance in typical milling setups
• Through-coolant compatible via through-spindle and DIN flange coolant delivery
• TIR of 0.0002 inch for high-precision tool runout control
• Balanced to 30,000 RPM for high-speed machining applications

Compatibility

Designed as an OEM-style replacement or standard tooling addition for BT40-spindle machining centers requiring a 3/4 inch bore end mill holder with M16 x 2.0 drawbar thread.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician. Power down and lock out the machining center spindle before seating or removing any toolholder. Ensure the spindle taper and holder taper are clean and free of chips or coolant residue before assembly. Torque the drawbar to the machine manufacturer's specification using the appropriate drawbar wrench.