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Introduction
This manual is provided by WMH Tool Group, Inc. covering the safe operation and maintenance
procedures for a Powermatic Model 31A Combination Belt/Disc Sander. This manual contains instructions
on installation, safety precautions, general operating procedures, maintenance instructions and parts
breakdown. This machine has been designed and constructed to provide years of trouble free operation if
used in accordance with instructions set forth in this manual. If there are any questions or comments,
please contact either your local supplier or WMH Tool Group. WMH Tool Group can also be reached at
our web site: www.wmhtoolgroup.com.
Specifications
Model Number.............................................................................31A .................................................31A
Stock Number (1 Phase model) .........................................1791291K .......................................................
Stock Number (3 Phase model) ......................................................... ....................................... 1791292K
Abrasive Belt Size (in.) ............................................................ 6 x 48 ..............................................6 x 48
Disc Size (in.) ................................................................................12 ................................................... 12
Table Working Height (in.) ......................................... 34 disc, 36 belt ................................34 disc, 36 belt
Sanding Arm Locking Positions (deg.) ........................... 0, 45 and 90 ....................................0, 45 and 90
Disc Table Size (in.) .......................................................... 17-1/4 x 9 ........................................17-1/4 x 9
Disc Table Tilt (deg.).................................................. 15 up, 45 down ............................... 15 up, 45 down
Belt Table Size (in.) ..................................................... 13-1/4 x 7-1/2 ..................................13-1/4 x 7-1/2
Belt Table Tilt (deg.) .............................................................45 down ..........................................45 down
Disc Speed (RPM)..................................................................... 2375 ............................................... 2375
Belt Speed (SFPM).................................................................... 2410 ............................................... 2410
Dust Port Diameter (in.)...................................................................4 ..................................................... 4
Dust Collection Minimum CFM Required......................................400 ................................................. 400
Motor...........................................................1-1/2HP, 1PH, 115/230V .......................2HP, 3PH, 230/460V
(pre-wired 115V), 14/7A (pre-wired 230V) 7/3.5A
Overall Dimensions (LxWxH)(in.)........................24 x 31-1/4 x 54-1/2 ........................ 24 x 31-1/4 x 54-1/2
Net Weight (lbs.).......................................................................... 247 ................................................. 247
Shipping Weight (lbs.)..................................................................275 ................................................. 275
The above specifications were current at the time this manual was published, but because of our policy of
continuous improvement, WMH Tool Group reserves the right to change specifications at any time and
without prior notice, without incurring obligations.
Read and understand the entire contents of this manual before attempting set-up
or operation! Failure to comply may cause serious injury.