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Grinding Wheels
Series 57 Tool Post Grinder External Spindle

Grinding Wheels | Dumore Series 57 Tool Post Grinder External Spindle

Dumore offers a range of grinding wheels, spindles and spindle inserts for the Series 57 tool post grinder to meet the majority of grinding applications.

Each grinding wheel has a "Use Code" designating the intended use:

1 = General-purpose. For steels up to Rockwell C45 hardness
2 = For cast iron, brass and other non-ferrous materials, including Sulzer Metco 445, 447, and 18C plasma spray coatings
3 = For stainless steels, Rockwell C45-C59 hardness steels, and all stainless steel based plasma spray coatings
4 = For steels of Rockwell C60 hardness and higher
5 = For hard and soft rubber
6 = For carbide


Grinding wheels for the Series 57 tool post grinder external spindle are made from aluminum oxide (A) or silicon carbide (S) as denoted by the "Wheel Material Code".

The External Spindle (805-0064) handles 1/2" bore diameter standard grinding wheels up to 6" wheel diameter, 1" wheel thickness. Its maximum recommended speed is 15,000 rpm.

See additional spindles and spindle inserts for Series 57 tool post grinders.