Value Collection 219-9534 Milling Machine Arbor NMTB50

Product Description

The VALUE COLLECTION 219-9534 is a Style B milling machine arbor with a taper shank designed for use on milling machines equipped with an NMTB50 spindle taper. The arbor features a 1-inch arbor diameter and an overall length of 21.88 inches, making it suited for general-purpose horizontal and vertical milling operations. The drawbar thread is sized at 1-8. This arbor is installed by machinists and tool room technicians in production and job shop environments where accurate cutter positioning and solid shank engagement are critical to machining performance.

This arbor is intended for use in milling machines with an NMTB50 taper spindle, a standard found across a wide range of knee mills, bed mills, and horizontal milling machines in both job shop and production settings. The 15-inch shoulder-to-nut length provides substantial cutter stack capacity, and the included arbor spacer and running bushing support proper cutter spacing and arbor support at the outboard end. The package includes one arbor, one arbor spacer, and one running bushing with a 2-1/8-inch diameter and a 3-3/4-inch length.

Key Features

• Style B arbor with NMTB50 taper shank for positive spindle engagement
• 1-inch arbor diameter with a 15-inch shoulder-to-nut length for extended cutter stack capacity
• 2.125-inch shank diameter for secure retention in the spindle bore
• Drawbar thread size of 1-8 for standard drawbar compatibility
• Includes one arbor spacer and one running bushing (2-1/8-inch diameter, 3-3/4-inch length)
• Overall length of 21.88 inches supports outboard arbor support arm use

Compatibility

Designed for use in milling machines equipped with an NMTB50 taper spindle. Confirm spindle taper, drawbar thread size, and arbor support bore diameter before installation.

Installation Notes

Installation should be performed by a qualified machinist or tool room technician with the machine powered down and locked out per applicable lockout/tagout procedures. Verify the spindle taper and drawbar thread engagement before tightening. The running bushing must be seated in the arbor support arm to prevent deflection during cuts. Inspect arbor spacers, the arbor bore, and cutter seating surfaces for burrs or contamination before assembly.