Spindles | Series 12 Tool Post Grinders
Dumore interchangable spindles for Series 12 Tool Post Grinders handle a wide range of tool room and production grinding applications.
Spindle Adaptor Kit
Use of the 12” External Spindle (889-0011) on Series 12 Tool Post Grinders also requires the Series 12 Spindle Adaptor Kit (858-0034), not included with the spindle - sold separately (see below).

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.
Learn More >

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.
Learn More >

External grinding with 3/4" bore diameter grinding wheels, up to 8" wheel diameter, 7/8" wheel thickness. 8,000 rpm maximum speed.
Learn More >

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.
Learn More >

Required with the 12” External Spindle (sold separately) when used with Series 12 Tool Post Grinders.
Learn More >