THEMAC, Inc. is the originator of portable tool post grinders that perform difficult
grinding jobs on any size lathe.  For outstanding exclusive design, performance,
dependability and adaptability, THEMAC grinders stand alone.  Here's why:

PERMANENT LUBRICATION
All THEMAC grinders are equipped with grease sealed-for-life ball bearings - no
lubrication required.

MOUNT ON ANY MACHINE TOOL
Although used principally on lathes, exclusive features make THEMAC grinders a
natural for mounting on shapers, planers, millers, boring mills, surface grinders or
special usnits. Units can be operated in vertical or horizontal positions.

ECCENTRIC SPINDLE TUBE (an exclusive THEMAC feature)
The eccentric spindle tube provides for positive manual belt adjustment, asuring
proper belt tension at all times. The motor and spindle assembly remain parallel
under all conditions. The belt tension will not cause misalignment of grinding
spindle because the motor and spindle assembly are securely locked in position.
There are no springs or hinges to permit side movement when grinder is in
operation; thus the possibility of setting up vibration is reduced to a minumum.

Pulley alignment can be set so that belts will always remain on pulleys and
transmit full power.

SECURE TOOL POST CLAMP BRACKET
Grinder attaches directly to the top compound rest. An easy-to-get-at locking
device securely locks the clamping nut in T-slot. No overhanging weight to cause
vibration.

CIRCUMFERENTIAL SWING
The circumferentially adjustable grinding spindle can be locked and operated in
any position within the range of adjustment. The locking arrangement is simple
and positive.

QUICKLY ADJUSTABLE TO ANY LATHE CENTER
It is possible to mount THEMAC grinders on the smallest bench lathes with the
grinding spindle center to lathe center. Through the adjustment of the compound
rest or by swinging the grinder, any angle can be obtained. Grinding wheel can be
used on right or left side... front or rear of motor.  The circumferential and
horizontal swing features allow the operator to place the grinding wheel in front o
motor for external and internal grinding, or the grinding wheel can be swiung to
the rear of the motor for large diameter external grinding. By swinging the grinder
around, the wheel can be operated on either side.

STANDARD EQUIPMENT INCLUDED ON EACH GRINDER: (ONE EACH)

DIAMOND DREASSER   BELT SET
WHEEL GUARD   CARRYING CASE
BELT GUARD      TEE-BOLT CLAMP
SET OF PULLEYS       CORD WITH 3-PRONG GROUNDING PLUG

THEMAC Model No. J-2A1 with 1125 Spindle Assembly 
      Light duty internal and external grinding (mounting bracket offsets
grinder over tool-post). Recommended for lathes with 9" to 13" swing.

Specifications:
1/3 H.P. Univeral Motor AC-DC 115V
Speed Range: 7,000 rpm to 36,000 rpm
Maximum Grinding Wheel Capacity: 3"
Machine Weight: 16 lbs.
Shipping Weight: 21 lbs.

Additional Equipment Included:
#721 - Extension Spindle for external and interal grinding with arbor and
  collar 3/8" and 2 wheel collars 5/8".

Grinding Wheels (inches):
#235 - 3 x 3/8 x 3/8#226 - 1 1/2 x 1/4 x 1/4

Recessed Wheels (inches):
#220 - 3/8 x 1/4 x 1/4#223 - 3/4 x 14/ x 1/4

Two each wheel collars 1" and 2" to fit directly on the Spindle
Assembly arbor.
THEMAC Model No. J-2A with 1125 Spindle Assembly  
      Light duty for internal and external grinding (mounting bracket
clamps grinder directly over tool-post).  Recommended for
lathes with 9" to 13" swing.

Specifications:
1/3 H.P. Univeral Motor AC-DC 115V
Speed Range: 7,000 rpm to 36,000 rpm
Maximum Grinding Wheel Capacity: 3"
Machine Weight: 13 lbs.
Shipping Weight: 20 lbs.

Additional Equipment Included:
#721 - Extension Spindle for external and internal grinding with arbor and
  collar 3/8" and 2 wheel collars 5/8".

Grinding Wheels (inches):
#235 - 3 x 3/8 x 3/8#226 - 1 1/2 x 1/4 x 1/4
#234 - 2 x 3/8 x 3/8

Recessed Wheels (inches):
#220 - 3/8 xx 1/4 x 1/4
#223 - 3/4 x 1/4 x 1/4

Two each wheel collars 1" and 2" to fit directly on the Spindle
Assembly arbor.
THEMAC Model No. J-30 with 1115 Spindle Assembly 
      Medium duty external grinding only.  Recommended for lathes
      with 9" to 13" swing.

Specifications:
1/3 H.P. Univeral Motor AC-DC 115V
Speed Range: 5,500 rpm to 11,500 rpm
Maximum Grinding Wheel Capacity: 4"
Machine Weight: 16 lbs.
Shipping Weight: 21 lbs.

Additional Equipment Included:

Grinding Wheels (inches):
#270 - 4 x 3/8 x 3/8#235 - 3 x 3/8 x 3/8
#234 - 2 x 3/8 x 3/8

Two each wheel collars 1" and 2" to fit directly on the Spindle
Assembly arbor.
THEMAC Model No. J-3 with 125 Spindle Assembly  
      Light 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: 7,000 rpm to 36,000 rpm
Maximum Grinding Wheel Capacity: 3"
Machine Weight: 16 lbs.
Shipping Weight: 20 lbs.

Additional Equipment Included:
#721 - Extension Spindle for external and internal grinding with arbor and
  collar 3/8" and 2 wheel collars 5/8".
#190 - 1/8' Chuck Extension Spindle

Grinding Wheels (inches):
#235 - 3 x 3/8 x 3/8#234 - 2 x 3/8 x 3/8
#226 - 1 1/2 x 1/4 x 1/4

Mounted Wheels (inches):
#202 - 1/4 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

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

Recessed Wheels (inches):
#220 - 3/8 x 1/4 x 1/8
#223 - 3/4 x 1/4 x 1/8
THEMAC Model No. J-7 with 945T Spindle Assembly  
      Heavy duty internal and external grinding.  Recommended for lathes
      with 13" swing or larger.
 
Specifications:
1 H.P. Univeral Motor AC-DC 115V
Speed Range: 3,900 rpm to 27,000 rpm
Maximum Grinding Wheel Capacity: 6"
Machine Weight: 34 lbs.
Shipping Weight: 56 lbs.
 
Additional Equipment Included:
#2067 - Extension Spindle for external grinding with 2 each wheel collars
   1" and 2".
#2020 - Extension Spindle for internal grinding with arbor and 2 wheel
           collars 3/4".
#2097 - 1/4' Chuck Extension Spindle with 1/8" collet.
 
Grinding Wheels (inches):
#966 - 6 x 1/2 x 3/4#268 - 2 1/2 x 1/2 x 1/2
#266 - 4 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 Wheel Collars 2 1/2 " to fit directly on Spindle Assembly Arbor.
THEMAC Model No. J-40 with 445 Spindle Assembly
      Medium duty external grinding only.  Recommended for lathes
      with 12" to 15" swing.

Specifications:
1/2 H.P. Univeral Motor AC-DC 115V
Speed Range: 4,200 rpm to 9,000 rpm
Maximum Grinding Wheel Capacity: 5"
Machine Weight: 20 lbs.
Shipping Weight: 25 lbs.

Additional Equipment Included:

Grinding Wheels (inches):
#265 - 5 x 3/8 x 1/2#240 - 3 x 3/8 x 1/2
#268 - 2 1/2 x 1/2 x 1/2

Two each wheel collars 1" and 2" to fit directly on the Spindle
Assembly arbor.
PRODUCTS
THEMAC
INC.
Custom American Made Products

THEMAC Model No. J-45 with 2025T Spindle Assembly    
      Medium duty internal and external grinding.  Recommended for lathes
      with 12" to 15" swing.

Specifications:
1/2 H.P. Univeral Motor AC-DC 115V
Speed Range: 4,200 rpm to 42,000 rpm
Maximum Grinding Wheel Capacity: 5"
Machine Weight: 20 lbs.
Shipping Weight: 26 lbs.

Additional Equipment Included:
#2067 - Extension Spindle for external grinding with 2 each wheel collars
   1" and 2".
#2020 - Extension Spindle for internal grinding with arbor and 2 wheel
           collars 3/4".
#2097 - 1/4' Chuck Extension Spindle with 1/8" collet.

Grinding Wheels (inches):
#265 - 5 x 3/8 x 1/2#268 - 2 1/2 x 1/2 x 1/2
#266 - 4 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
THEMAC Model No. J-4 with 425 Spindle Assembly    
      Light duty internal and external grinding.  Recommended for lathes
      with 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.
Shipping Weight: 25 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.
THEMAC, Inc.
405 Railroad Avenue
P.O. Box 444
East Rutherford, N.J. 07073-0444
Phone: (201) 438-2313
Fax: (201) 438-8647
info@themacinc-us.com
products@themacinc-us.com
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