THEMAC Model No. J-35 with 2025 Spindle Assembly
Medium duty internal and external grinding. Recommended for lathes with 9" to 13" swing.
Specifications:
1/3 H.P. Univeral Motor AC-DC 115V
Speed Range: 5,500 rpm to 45,000 rpm
Maximum Grinding Wheel Capacity: 4"
Machine Weight: 16 lbs.
Shipping Weight: 22 lbs.
Additional Equipment Included:
#2036 - Extension Spindle for external grinding with 2 each wheel collars 1" and 2".
#2021 - Extension Spindle for internal grinding with arbor and 2 wheel collars 3/8".
#2097 - 1/4' Chuck Extension Spindle with 1/8" collet.
Grinding Wheels (inches):
#270 - 4 x 3/8 x 3/8
#234 - 2 x 3/8 x 3/8
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
#203 - 1/2 x 1/4 x 1/8
Recessed Wheels (inches):
#220 - 3/8 x 1/4 x 1/8
#223 - 3/4 x 1/4 x 1/8
THEMAC, Inc. was founded in 1936 by Err McGonegal as The McGonegal Manufacturing Company. Mr. McGonegal was a Scot who had a canny sense of business and the skill to produce a precision tool that would be in demand for decades. Forty years later, it was purchased by the present owner and president, Joseph Cremona, who built on the success of Mr. McGonegal and improved the design of the product line.
THEMAC, Inc. produces a series of grinding machines that are designed to be mounted on any make of bench or engine lathe. The THEMAC toolpost grinder is accepted as the standard in the American industry and maintains its own niche in the market today.
THEMAC Medium duty internal and external grinder for lathes with 9" to 13"
