Value Collection 210-3072 End Mill Holder NMTB30

Product Description

The VALUE COLLECTION 210-3072 is an end mill holder designed for use on milling machines equipped with an NMTB30 taper spindle. It accepts end mills and cutting tools with a 7/8 inch bore and features a 4 inch projection from the spindle face to the tool nose. The nose diameter measures 1-7/8 inches. Total indicator runout (TIR) is rated at 0.0004 inch, providing the concentricity required for accurate milling operations. The drawbar thread size is 1/2-13. This holder is installed by machinists and toolroom technicians as part of a standard tool setup on manual or CNC knee mills and similar NMTB30-spindle machines.

This end mill holder is suited for general-purpose milling applications in job shops, toolrooms, and production environments. It is used wherever an NMTB30 spindle taper is the machine interface standard. The 4 inch projection accommodates setups where clearance between the spindle nose and the workpiece or fixture is needed. No through-coolant is provided, making it appropriate for dry or flood-coolant setups where coolant is delivered externally rather than through the tool.

Key Features

• NMTB30 taper shank for direct mounting in NMTB30 spindle machines
• 7/8 inch bore accommodates standard end mills and cutting tools of that shank diameter
• 4 inch projection provides clearance for workpiece and fixture setups
• TIR of 0.0004 inch supports accurate, repeatable cutting performance
• 1/2-13 drawbar thread for secure spindle retention
• 1-7/8 inch nose diameter for standard collet or set-screw retention configurations

Compatibility

Designed as a direct-mount end mill holder for milling machines with an NMTB30 taper spindle interface and a 1/2-13 drawbar thread.

Installation Notes

Installation is performed by a machinist or toolroom technician. Before mounting or removing the holder, ensure the machine spindle is fully stopped and the machine is in a safe, locked-out state per facility lockout/tagout procedures. Clean the spindle taper and holder taper thoroughly before seating to ensure full contact and accurate runout. Verify drawbar engagement and torque per the machine manufacturer's specification before beginning any cutting operation.