Royal Master model TG-12X4 Centerless Grinder

The TG-12x4 a staple of machine shops for over 65 years has evolved over all those years from holding “space age tolerances” of the 1960’s to a micron, tolerances that are required today. The machine’s technology has improved over the decades with upgrades to spindles, regulating wheel housings, dressers, and now a cleaner appearance. Notable improvements over the last two years are the following:

- larger and thicker machine cast iron machine bed,
- larger base,
- servo regulating wheel drive,
- stepping motor cross dressers
- color touchscreen operation.

All of these improvements make the TG-12x4 to have the ability off the assembly line to grind under a micron ( under .000040") straight and round. That’s the quality that’s expected of every machine. Sometimes holding .0001" (2.5 micron) just isn’t good enough.

Specifications and Standard Features

Machine Capacity: .002” to 1.5” (.05mm to 38mm)

Accuracy: .00004” (.001mm)

New Grinding Wheel: 12” diameter x 4” wide (304mm x 100mm)

Regulating Wheel: 6” diameter x 4” wide (152mm x 100mm) Servo Driven 0-500 rpm

Spindle Power: 7.5hp

Weight : 2500 lbs

**Note** The Royal Master is missing the hydraulic wheel dresser unit from the top of the main wheel. We have a quote from Royal Master to replace it for $18,500. We will deduct the price of a new wheel dresser $18,500 to offset the price for a replacement one.