J-4

J-4

1/2 H.P., Internal & External, 5,800-42,000 rpm

Regular price $2,400.00

The Themac J-4 tool post grinder is built for light duty internal and external grinding and is packaged with a

425 Spindle Assembly. It's recommended for lathes with a 12" to 15" swing.

Specifications:

  • 1/2 H.P. Univeral Motor AC-DC 115V
  • Speed Range: 5,800 rpm to 42,000 rpm
  • Maximum Grinding Wheel Capacity: 4"
  • Machine Weight: 20 lbs.

Additional Equipment Included:

  • #424 - Extension Spindle for external grinding with 2 wheel collars 3/4".
  • #497 - 1/4' Chuck Extension Spindle with 1/8" collet.

Grinding Wheels (inches):

  • #266 - 4 x 1/2 x 1/2
  • #268 - 2 1/2 x 1/2 x 1/2 
  • #226 - 1 1/2 x 1/4 x 1/4 

Mounted Wheels (inches):

  • #202 - 1/4 x 1/4 x 1/8
  • #267 - 1 x 1/4 x 1/4
  • #203 - 1/2 x 1/4 x 1/8

Two each wheel collars 1" and 2" to fit directly on the Spindle Assembly arbor.