Value Collection 210-4071 End Mill Holder NMTB40

Product Description

The VALUE COLLECTION 210-4071 is an end mill holder designed for milling machines equipped with an NMTB40 taper shank spindle. It accepts a 3/16 inch bore for end mills and cutting tools, securing them for precise material removal operations. The holder features a 2 inch projection from the spindle face and an 11/16 inch nose diameter. With a Total Indicator Runout (TIR) of 0.0004 inch, this holder maintains the tight concentricity tolerances required for accurate milling work. A 5/8-11 drawbar thread secures the holder in the spindle. This toolholder is installed and serviced by machinists and CNC or manual mill operators in production and job-shop environments.

This end mill holder is suited for use on NMTB40 compatible vertical and horizontal milling machines in both manual and CNC configurations. The 3/16 inch bore accommodates small-diameter end mills and cutting tools used in precision contouring, slotting, and profiling operations. The 2 inch projection provides clearance for workholding fixtures while keeping the cutting tool close enough to the spindle for rigidity. It is a practical toolholder choice for general machining tasks in job shops, tool rooms, and production facilities.

Key Features

• NMTB40 taper shank for direct mounting to compatible milling machine spindles
• 3/16 inch bore diameter accommodates small-diameter end mills and cutting tools
• 2 inch projection provides fixture clearance while maintaining setup rigidity
• 11/16 inch nose diameter for secure tool clamping
• TIR of 0.0004 inch supports concentricity requirements in precision milling
• 5/8-11 drawbar thread for positive spindle retention
• No through-coolant configuration — standard dry or flood coolant setups apply

Compatibility

Designed for milling machines with an NMTB40 taper shank spindle. Confirm spindle taper size and drawbar thread specification before installation.

Installation Notes

Installation should be performed by a qualified machinist or mill operator. Power down and lock out the milling machine before mounting or removing any toolholder. Verify that the spindle bore and taper surfaces are clean and free of chips or burrs before seating the holder. Torque the drawbar according to the machine manufacturer specifications and confirm tool runout with a dial indicator before beginning a cut.