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Spindles | Series 25 Tool Post Grinders

Dumore interchangable spindles for Series 25 Tool Post Grinders handle a wide range of tool room and production grinding applications.

Spindle Adaptor Kit
Use of these spindles on Series 25 Tool Post Grinders, except for the 12” External Spindle, also requires the Series 25 Spindle Adaptor Kit (858-0035), not included with the spindles - sold separately (see below).

Tool Post Grinder Spindle Adaptor Kit | Dumore Series 25 Tool Post Grinders
Series 25 Spindle Adapter Kit

Required with all spindles (sold separately), except the 12” External Spindle, when used with Series 25 Tool Post Grinders.
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8” Internal Spindle

Internal grinding to 8" depth (10" for holes larger than the 3" spindle diameter). 1 3/8" diameter, with 1/2" bore diameter grinding wheels up to 5" wheel diameter, 3/4" wheel thickness. 8,000 rpm maximum speed. Series 25 Spindle Adapter Kit required - sold separately.
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Tool Post Grinder 16” Internal Spindle | Dumore Series 25 Tool Post Grinders
16” Internal Spindle

Internal grinding to 16" depth (18" for holes larger than the 3" spindle diameter). 1 3/8" diameter, with 1/2" bore diameter grinding wheels up to 5" wheel diameter, 3/4" wheel thickness. 8,000 rpm maximum speed. Series 25 Spindle Adapter Kit required - sold separately.
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Tool Post Grinder 8” External Spindle | Dumore Series 25 Tool Post Grinders
8” External Spindle

External grinding with 3/4" bore diameter grinding wheels, up to 8" wheel diameter, 7/8" wheel thickness. 8,000 rpm maximum speed. Series 25 Spindle Adapter Kit required - sold separately.
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Tool Post Grinder 12” External Spindle | Dumore Series 25 Tool Post Grinders
12” External Spindle

External grinding with 1 1/4" bore diameter grinding wheels, up to 12" wheel diameter, 1 1/4" wheel thickness. 4,000 rpm maximum speed. Series 12 Spindle Adapter Kit required - sold separately.
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