Value Collection 210-5088 End Mill Holder NMTB50

Product Description

The VALUE COLLECTION 210-5088 is an end mill holder designed for CNC machining centers and milling machines equipped with an NMTB50 taper spindle. It accepts end mills with a 1.5-inch bore diameter and features a 2.625-inch nose diameter with a 3.5-inch projection. The holder transmits rotational force from the spindle to the cutting tool, maintaining concentricity within 0.0004 inches TIR for accurate, repeatable cuts. The drawbar thread is sized at 1-8. Machinists and CNC operators install this holder as part of their tooling setup when running larger-diameter end mills on NMTB50-equipped equipment.

This end mill holder is suited for production and job-shop milling operations where NMTB50 taper tooling is the standard. The 3.5-inch projection provides clearance for workpieces and fixtures that require additional reach from the spindle face. It is appropriate for both horizontal and vertical milling machines using the NMTB50 taper standard. Through-coolant is not supported on this holder.

Key Features

• NMTB50 taper shank for direct spindle mounting on compatible milling machines
• 1.5-inch bore diameter accommodates large-shank end mills
• 3.5-inch projection for extended reach in fixture-heavy setups
• 2.625-inch nose diameter for robust tool clamping
• 0.0004-inch TIR for precise concentricity and reduced runout
• 1-8 drawbar thread for secure spindle retention

Compatibility

Designed for use with milling machines and machining centers equipped with an NMTB50 taper spindle and a 1-8 drawbar thread.

Installation Notes

End mill holders of this type are installed by machinists or CNC setup technicians. Always power down and lock out the machine before installing or removing tooling. Verify the taper shank and spindle bore are clean and free of chips or damage before seating the holder. Secure the drawbar to the manufacturer-specified procedure for the host machine before resuming operation.