Value Collection 214-7594 Nmtb to R8 Taper Adapter

Product Description

The VALUE COLLECTION 214-7594 is an NMTB to R8 taper adapter designed to bridge NMTB40 spindle tooling with R8 collet-style machine spindles. The outside taper is NMTB40, and the inside taper accepts R8 tooling. This adapter allows machinists and tool room technicians to run R8-shank tooling on machines equipped with an NMTB40 spindle, eliminating the need to swap out toolholders or retool the machine entirely. It is commonly used in job shops, tool rooms, and production environments where mixed tooling systems are in service. At 3.38 pounds, the adapter is a solid, precision-ground component intended for use on manual and CNC milling machines.

This adapter is suited for vertical milling machines and machining centers that have an NMTB40 spindle interface and require compatibility with R8-shank tooling. It is a practical solution when a shop maintains both NMTB40-equipped machines and a legacy inventory of R8 tooling. Installation is performed by qualified machinists or tool room personnel during setup and tooling changeovers. No specific compatible machine model numbers are stated in the available product data.

Key Features

• NMTB40 outside taper interfaces directly with NMTB40 spindles
• R8 inside taper accepts standard R8-shank tooling
• Enables use of R8 tooling on NMTB40-equipped machines without full retooling
• Solid construction at 3.38 pounds for stable, vibration-resistant performance
• Sold as a single-unit package for straightforward procurement

Compatibility

Designed as an OEM-style replacement and crossover adapter for milling machines with NMTB40 spindle interfaces requiring R8 inside taper tooling fitment.

Installation Notes

Installation should be performed by a qualified machinist or tool room technician. Power down and de-energize the machine spindle before installing or removing any taper adapter. Ensure the spindle bore and adapter taper surfaces are clean and free of chips, burrs, or coolant residue before seating the adapter. Follow the machine manufacturer guidelines and applicable shop safety procedures during any spindle tooling change.