Value Collection 210-3073 End Mill Holder NMTB30 1 in

Product Description

The VALUE COLLECTION 210-3073 is an end mill holder designed for CNC machining centers and manual milling machines that use an NMTB30 taper shank interface. It accepts a 1 inch diameter end mill shank and provides a 4 inch projection from the spindle face, giving machinists clearance for deeper setups or workholding configurations. The holder features a total indicator runout (TIR) of 0.0004 inches, supporting accurate cuts and extended tool life. A 1/2-13 drawbar thread secures the holder in the spindle. This toolholder is installed by machinists and toolroom technicians working with NMTB30-equipped spindles.

This end mill holder is suited for ferrous and non-ferrous machining operations where a secure, repeatable taper shank connection is required. The 4 inch projection makes it a practical choice when standard-length holders lack the reach needed for deep pockets, tall fixtures, or clearance around workholding hardware. It does not support through-spindle coolant delivery, so flood or mist coolant must be directed externally at the cutting zone.

Key Features

• NMTB30 taper shank for positive spindle engagement and repeatable location
• 1 inch hole diameter accepts standard 1 inch shank end mills
• 4 inch projection (70.00 mm) provides extended reach for deep-pocket and fixture-clearance applications
• TIR of 0.0004 inches supports accurate, low-vibration cutting
• 1/2-13 drawbar thread is compatible with standard NMTB30 spindle drawbars
• No through-coolant port — external coolant application required

Compatibility

Designed as a direct-fit replacement or supplemental toolholder for milling spindles with an NMTB30 taper interface and a 1/2-13 drawbar thread. No specific machine model compatibility was provided in the product data.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Always power down and lock out the machine before mounting or removing toolholders. Verify that the spindle taper bore and holder taper are clean and free of chips, oil, and burrs before seating the holder. Tighten the drawbar to the machine manufacturer's specification and confirm TIR with a test indicator before beginning production cuts.