Value Collection 210-4072 End Mill Holder NMTB40

Product Description

The VALUE COLLECTION 210-4072 is an end mill holder designed for CNC machining centers and milling machines that accept an NMTB40 taper shank interface. The holder features a 3/8-inch bore and a 1-inch nose diameter, with a 2-inch projection that positions the cutting tool at the correct working distance from the spindle face. Through-coolant is not supported. Total Indicator Runout (TIR) is rated at 0.0004 inch, providing the concentricity required for accurate end mill performance. This holder is installed by machinists and CNC setup technicians in production and job-shop environments.

This end mill holder is suited for vertical and horizontal machining centers equipped with an NMTB40 spindle taper. The 2-inch projection makes it appropriate for general-purpose end milling operations where moderate tool stick-out is needed. The drawbar thread is 5/8-11, which is the standard thread for NMTB40 tooling on most domestic machining centers. It is sold as a single unit and is appropriate for shops requiring a reliable, direct-mount holder without additional adapters.

Key Features

• NMTB40 taper shank for direct mounting in compatible machining center spindles
• 3/8-inch bore diameter accepts standard 3/8-inch shank end mills
• 2-inch projection for general-purpose milling reach
• TIR of 0.0004 inch for consistent concentricity and tool accuracy
• 5/8-11 drawbar thread matches standard NMTB40 retention hardware
• No through-coolant configuration keeps the design straightforward and durable

Compatibility

Designed as an OEM-style end mill holder for machining centers fitted with an NMTB40 spindle taper and a 5/8-11 drawbar thread. Accepts 3/8-inch shank cutting tools.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician with the machine powered down and the spindle fully stopped before handling any tooling. Verify the spindle taper and drawbar thread size match this holder before attempting installation. Torque the drawbar according to the machine tool manufacturer specifications. Inspect the taper bore and shank for nicks or contamination before seating, as surface defects will negatively affect runout.