Accupro 775490 Shell Mill Holder BT40 2 Inch Nose

Product Description

The ACCUPRO 775490 is a BT40 taper shank shell mill holder designed for use on CNC machining centers equipped with BT40 spindle interfaces. It accepts shell mills with cutting diameter ranges from 1-3/4 to 2 inches and features a 2-inch nose diameter with a 3/4-inch pilot diameter. The holder provides through-spindle and DIN flange coolant delivery, directing coolant directly to the cutting zone for improved chip evacuation and tool life. With a Total Indicator Runout (TIR) of 0.0002 inches, it delivers the concentricity required for accurate face milling and shoulder milling operations. Machinists and CNC programmers specify this holder for demanding metal removal applications.

This shell mill holder is suited for production machining environments running BT40-spindle vertical or horizontal machining centers. The 1.75-inch projection from flange to nose end accommodates standard shell mill bodies in typical fixture and workholding setups. Through-coolant capability makes it well matched to high-feed face milling on ferrous and non-ferrous materials where heat and chip control are critical. The 3/8-24 lock screw thread secures the shell mill arbor bolt to industry-standard specifications.

Key Features

• BT40 taper shank for direct mounting in BT40 CNC spindles
• 2-inch nose diameter supports shell mills in the 1-3/4 to 2-inch cutting diameter range
• Through-spindle and DIN flange coolant delivery for directed coolant at the cutting edge
• TIR of 0.0002 inches for tight concentricity and consistent surface finish
• 3/4-inch pilot diameter and 3/8-24 lock screw thread for secure shell mill retention
• 1.75-inch flange-to-nose projection for standard reach in typical setups

Compatibility

Designed for use with BT40-spindle machining centers accepting shell mills with a cutting diameter range of 1-3/4 to 2 inches and a 3/4-inch pilot bore.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully powered down and locked out before mounting or removing the holder. Clean the spindle taper and holder shank thoroughly before seating to prevent runout caused by debris. Torque the shell mill arbor bolt to the shell mill manufacturer's specification using the 3/8-24 lock screw thread.