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Spindles | Series 57 Tool Post Grinders

Dumore offers a full line of interchangeable spindles and spindle inserts for Series 57 Tool Post Grinders to meet a wide range of tool room and production grinding applications.

Tool Post Grinder Insert Spindle | Dumore Series 57 Tool Post Grinders
Insert Spindle

External or internal grinding, depending on which Spindle Insert is used. Spindle Inserts required - sold separately. 42,500 rpm maximum speed.
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Tool Post Grinder Spindle Inserts | Dumore Series 57 Tool Post Grinders
Spindle Inserts

For use with Insert Spindle (sold separately). Select options for external or internal grinding versatility.
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Tool Post Grinder 9” Internal Spindle | Dumore Series 57 Tool Post Grinders
9” Internal Spindle

Internal grinding to 9" depth (12" for holes larger than the 1 3/4" spindle diameter). 1 5/8" diameter, with 3/8" bore diameter grinding wheels up to 2 1/2" wheel diameter, 3/8" wheel thickness. 15,000 rpm maximum speed.
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Tool Post Grinder 15” Internal Spindle | Dumore Series 57 Tool Post Grinders
15” Internal Spindle

Internal grinding to 15" depth (18" for holes larger than the 1 3/4" spindle diameter). 1 5/8" diameter, with 3/8" bore diameter grinding wheels up to 2 1/2" wheel diameter, 3/8" wheel thickness. 15,000 rpm maximum speed.
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Tool Post Grinder External Spindle | Dumore Series 57 Tool Post Grinders
External Spindle

External grinding with 1/2" bore diameter grinding wheels, up to 6" wheel diameter, 1" wheel thickness. 15,000 rpm maximum speed.
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Diamond Wheels Spindle

External grinding with 1 1/4" bore diameter diamond grinding wheels. 15,000 rpm maximum speed.
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