Value Collection 210-5086 End Mill Holder NMTB50

Product Description

The VALUE COLLECTION 210-5086 is an end mill holder designed for use with NMTB50 taper shank spindles in CNC machining centers and manual milling machines. It accepts a 1-inch diameter end mill shank and provides 2.75 inches of projection from the spindle face, giving machinists sufficient clearance for a wide range of milling operations. The holder achieves a total indicator runout (TIR) of 0.0004 inches, supporting accurate, repeatable cuts. A 1-8 drawbar thread secures the holder in the spindle. At 9.12 pounds, this is a solid, production-grade toolholder suited for job shops and production floors alike.

This end mill holder is intended for use in vertical and horizontal milling setups where NMTB50 tooling is standard. It is well suited to roughing and finishing operations using standard 1-inch shank end mills. Typical users include machinists and toolroom technicians working with older and current-generation knee mills, bed mills, and machining centers equipped with NMTB50 spindles. The 2.75-inch projection accommodates moderate workpiece clearance requirements without excessive overhang.

Key Features

• NMTB50 taper shank for secure, repeatable spindle engagement
• 1-inch bore accepts standard 1-inch shank end mills
• 2.75 inches of projection for workpiece and fixture clearance
• TIR of 0.0004 inches for accurate, low-runout cutting
• 1-8 drawbar thread for positive spindle retention
• No through-coolant — suitable for standard flood or dry machining setups

Compatibility

Designed as an OEM-style toolholder for milling spindles with NMTB50 taper interfaces and a 1-8 drawbar thread.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before installing or removing the toolholder. Inspect the spindle taper and holder taper for nicks, burrs, or contamination before seating — any debris will affect runout and tool life. Torque the drawbar and set screw according to the machine and tooling manufacturer guidelines; do not exceed recommended values.