Value Collection 219-9556 Milling Machine Arbor Style B

Product Description

The VALUE COLLECTION 219-9556 is a Style B milling machine arbor with an NMTB50 taper shank, designed for use in horizontal milling operations requiring a 1.5-inch arbor diameter. Built to accept standard milling cutters, this arbor transmits torque from the machine spindle to the cutter through a precision-ground shank. The overall length runs 37.38 inches, and the shank diameter measures 2.75 inches, making it suitable for heavy-duty material removal on large-format vertical and horizontal knee mills and bed mills. It ships complete with arbor spacers and two running bushings, reducing the need to source additional components separately.

This arbor is intended for use in machine shop environments where NMTB50 spindle tooling is standard. It fits knee mills and horizontal milling machines equipped with NMTB50 spindle tapers. The shoulder-to-nut length of 30 inches accommodates wide cutter stacks, and the included 2-3/4-inch diameter bushings at 4-1/4-inch length help support the arbor outboard for stable, chatter-free cutting. Typical installers are machinists and tool-and-die professionals working in job shops, production facilities, and maintenance departments.

Key Features

• Style B arbor design with NMTB50 taper shank for positive spindle engagement
• 1.5-inch arbor diameter accommodates a wide range of standard milling cutters
• Overall length of 37.38 inches with a 30-inch shoulder-to-nut working length
• Includes arbor spacers and two running bushings (2-3/4-inch diameter, 4-1/4-inch length)
• Drawbar thread size 1-8 for secure spindle retention
• 2.75-inch shank diameter for rigid taper-to-spindle interface

Compatibility

Designed for use with milling machines equipped with an NMTB50 taper spindle and a 1-8 drawbar thread.

Installation Notes

Installation should be performed by a qualified machinist with the machine fully powered down and the spindle locked before seating or removing the arbor. The drawbar must be tightened to secure the taper shank before any cutting operation begins. Inspect the taper bore and arbor shank for debris or damage prior to each installation. Outboard support via the included running bushings and the machine overarm should be set up before running the spindle under load.