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TOOL INC.		 TOOL POST &
ANGLE PLATE GRINDERS

 
Highly versatile in application, U.S. Tool Post and Angle Plate Grinders are used extensively on lathes as well as a variety of other machine tools.  Applications include grinding centers, reamers, dies and rolls.  They can also be equipped for cutter grinding and internal grinding.

Precision built to machine tool standards, these grinders are easily adapted to special grinding requirements on boring mills, planers and shapers.  Most models can be optionally equipped with combination feeds to suit your specific needs.

Models HBA and HBBA feature vertical adjustment for manually positioning to center height or swiveling at any angle.  They straddle the tool post and can be reversed for grinding close to tail stock center.

Models JA, JKA, MA and MMA are equipped with a manually operated vertical feed.  This permits minute positioning during the grinding operations.

U.S. Model RA & RRA without feed
Models RA & RRA
(without feed)		 Click for larger view
U.S. Models HA & JHA with horizontal feed
Models HA & JHA
(with horizontal feed)		 Click for larger view
Models HBA & HBBA with vertical adjustment
Models HBA & HBBA
(with vertical adjustment)		 Click for larger view
U.S. Models JA, JKA, MA & MMA with vertical feed
Models JA, JKA, MA & MMA
(with vertical feed)		 Click for larger view
SPECIFICATIONS (Dimensions in inches)
Model HP Spindle
RPM		 Wheel Size Travel Net
Weight
Horizontal Vertical
RA 1/4 3600 6 x 1/2 x 1/2 - - 21
RRA 1 3600 8 x 1 x 5/8 - - 56
HA 1 3600 6 x 1/2 x 1/2 3 - 32
JHA 1 3600 8 x 1 x 5/8 3 - 60
HBA 1 3600 6 x 1/2 x 1/2 - 4-1/2 28
HBBA 1 3600 8 x 1 x 5/8 - 4-1/2 62
JA 1 3600 8 x 1 x 5/8 - 3 65
JKA 1 1800 10 x 1 x 7/8 - 3 97
MA 2 1800 12 x 1-1/4 x 7/8 - 1-3/4 125
MMA 3 1800 14 x 1-1/2 x 1-1/4 - 4-1/2 210

 
 
DIMENSION CHART (Dimensions in inches)
Dimension RA RRA HA JHA HBA HBBA JA JKA MA MMA
A 6-1/8 8 9-3/8 9-3/8 5 5 6 6 5-11/16 7-1/8
B 6-7/8 5-7/8 5-7/8 5-7/8 - - - - - -
C 11-3/16 12-13/16 12-1/4 12-13/16 12-1/4 12-13/16 12-13/16 13-5/16 17-1/4 20-15/16
D 1-5/8 1-7/8 1-7/8 1-7/8 1-7/8 1-7/8 1-7/8 1-7/8 1-7/8 2-1/4
E 7/8 1-3/4 1-3/4 1-3/4 1-3/4 1-3/4 1-3/4 1-3/4 2-1/2 2-1/2
F - 5 5 5 5 5 5 5 6 7-1/2
G 2-3/16 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 4-5/32 2-3/8
H 2-1/4 3-3/4 3-3/4 3-3/4 3-3/4 3-3/4 3-3/4 3-3/4 4-1/8 5-1/2
I 4-13/16 7-1/4 7-1/4 7-1/4 7-1/4 7-1/4 7-1/4 7-1/4 8-5/8 10-3/4
J 1-1/8 x 5/8 1-1/2 x 3/4 1-1/2 x 3/4 1-1/2 x 3/4 - - - - - -
K - - 4-5/16 4-5/16 - - - - - -
L - - 12 12 - - - - - -
M - - - - 1-9/16 1-9/16 1-9/16 1-9/16 2 2-1/2
N - - - - 1-7/8 1-7/8 1-7/8 1-7/8 2 2-1/2
O - - - - 3-1/16 3-1/16 3-1/16 3-1/16 2-5/8 2-1/2

 
Standard Equipment Optional Equipment
  • Wheel Guard
  • Sealed-for-life Ball Bearings
  • 3 wire power cable and toggle switch
  • Electrics: 
    • Model RA, 115 volt, 60 Hertz, single phase
    • Models RRA, HA, JHA, HBA, HBBA, JA & JKA, 115/230 volt, 60 Hertz, single phase or 230/460 volt, 60 Hertz, 3 phase
    • Models MA & MMA, 230/460 volt, 60 Hertz, 3 phase
    • (Specify operating voltage)
  • Index for cutter grinding
  • Internal grinding attachment
  • Horizontal or combination feeds (except RA)
  • Grinding wheels
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