Model#: PWMN1791291K

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Brand new items;Full manufacturer warranty available
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Powermatic 31A 12 in. 1-Phase 1-1/2-Horsepower 115/230V Belt/Disc Sander

  • Powermatic 31A 12 in. 1-Phase 1-1/2-Horsepower 115/230V Belt/Disc Sander
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Freight Orders

Freight deliveries require a delivery time be scheduled and someone must be present at the time of delivery to inspect and sign for the merchandise. A representative from the freight carrier will call the phone number entered at checkout to schedule the delivery.

Liftgate Service

For freight deliveries, you have the option of adding a liftgate to your delivery. A liftgate is the device that lowers a product from the truck to ground level.

CPO recommends adding liftgate service for freight deliveries exceeding 100 lbs if you do not have a loading dock or fork lift at the delivery address. Additional charges may apply. The liftgate option will be presented during the checkout process.

Please note that liftgate service only ensures the product is removed from the truck. We recommend you have the additional help of two to four people to move the product to its desired location because drivers are not required to assist.

Requesting liftgate service after ordering may result in additional charges and delays.

Ships in 1-2 business days


Loaded with features, the 31A Belt/Disc Sander from Powermatic can tackle the most demanding tasks. Full cast-iron construction allows both metal and woodworking to be done on the same machine. The integral dual dust port keeps both belt and disc portions clean, extending abrasive life. The articulating table mounted on the 6 in. x 48 in. belt sander head can be used vertically, horizontally or angled to accommodate diverse jobs. The belt head has an indexing pin with stops at 0 degrees, 45 degrees and 90 degrees, and the head lock allows use at any angles in between. Removing the top guard allows contour sanding and the cast-iron tables with miter gauge slots and positive stops make setup fast, accurate and simple for any angle.
  • Multi-position belt head with indexing pin and head lock
  • Locks at 0 degrees, 45 degrees and 90 degrees
  • Table for belt head tilts 0  to 45  downward with miter gauge slot and is adjustable for various angles
  • Full cast-iron platen with solid crowned aluminum drums
  • 12 in. balanced disc with tilting table (15 to 45 degrees) with miter slot
  • 31A Belt/Disc Sander - 1791291K


Length: 24 in.
Weight: 247 lbs.
Belt Operating Speed (SFPM): 2,410 SFPM
Belt Table Dimensions: 13 in. x 7-1/2 in. (L x W)
Disc Table Dimensions: 14-1/2 in. x 6-1/2 in. (L x W)
Motor Switch: Push Button
RPM: 2,375 RPM
Sanding Arm Locking Positions: 0 degrees, 45 degrees and 90 degrees
Table Working Height (Belt): 36-in
Table Working Height (Disc): 34 in.



4.0 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Yes, I would recommend this to a friend (2)
Powerful (2)
Best Uses
Frequent Use (1)
Yes, I would recommend this to a friend
Very Good Sander
This is a heavy duty sander that will remove a lot of material quickly depending on the grit used. It is relatively quiet for such a powerful machine. It comes with cast iron tables and fence that should serve well for years.
December 18, 2015
Yes, I would recommend this to a friend
Best Uses
Frequent Use
Good sander
This is a well made, heavy duty, powerful sander that is remarkably quiet for its power. Dust control is excellent and it comes with a cast iron table and table/fence that should provide excellent service. The belt tracking is very good once the adjustments are made, although it is a challenge to balance the belt tension and tracking adjustments to get the belt riding where it needs to be. I do wish the disk and belt positions were reversed, but the design appears to be the industry standard. In my work, I use the belt much more than the disk, so I position the machine "backwards" to the actual design. It works - just a bit cumbersome. I was surprised at how quiet the sander is given the size of the motor and the belt speed. If you put the sander on a mobile base like I did, be careful about orientation on the base so that you will be able to connect your dust collection system.
December 18, 2015

Questions & Answers

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Browse 3 questions Browse 3 questions and 3 answers
Is this machined made in the United States?

Dale on Mar 3, 2016
BEST ANSWER: The 1791291k is made in Japan and assembled in the United States.
Hello, which base/wheeled dolly will work with the 31a? and when does the 15% sale start?
thank you!
Paul on Mar 27, 2015
BEST ANSWER: The mobile base that will fit this tool is the Jet model # 708118. Currently, there are no promotions available for this unit. Powermatic sets the terms for promotions so you will need to keep checking our website or get on the mailing list and once we have a promotions we will let you know.
Does this unit come with miter gauge and wheeled base?
Robert on Dec 9, 2014

This model will included a miter gauge and the mobile base is sold separately. Please be advised that a 15% off sale will be coming up. For more information, please contact Raymond Charles at 1-866-577-3014 ext: 27108 or


JET, Wilton and Powermatic warrants every product they sell against manufacturers’ defects. If one of our tools needs service or repair, please contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday


The general warranty lasts for the time period specified in the literature included with your product or on the official JET, Wilton or Powermatic branded websites.

  1. • JET, Wilton and Powermatic products carry a limited warranty which varies in duration based upon the product. (See points below)
  2. • Accessories carry a limited warranty of one year from the date of receipt.
  3. • Consumable items are defined as expendable parts or accessories expected to become inoperable within a reasonable amount of use and are covered by a 90 day limited warranty against manufacturer’s defects.


This warranty covers only the initial purchaser of the product from the date of delivery.


This warranty covers any defects in workmanship or materials subject to the limitations stated below. This warranty does not cover failures due directly or indirectly to misuse, abuse, negligence or accidents, normal wear-and-tear, improper repair, alterations or lack of maintenance.


Woodworking products with a Five Year Warranty that are used for commercial or industrial purposes default to a Two Year Warranty. Please contact Technical Service at 1-800-274-6846 for further clarification.


Please contact Technical Service by calling 1-800-274-6846. Please note that you will be asked to provide proof of initial purchase when calling. If a product requires further inspection, the Technical Service representative will explain and assist with any additional action needed. JET, Wilton and Powermatic have Authorized Service Centers located throughout the United States. For the name of an Authorized Service Center in your area call 1-800-274-6846 or use the Service Center Locator on the JET, Wilton or Powermatic website.


JET, Wilton and Powermatic are constantly adding new products. For complete, up-to-date product information, check with your local distributor or visit the JET, Wilton or Powermatic website.


This warranty gives you specific legal rights, subject to applicable state law.


JET, WILTON AND POWERMATIC LIMIT ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED WARRANTY FOR EACH PRODUCT. EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU. JET, WILTON AND POWERMATIC SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR FOR INCIDENTAL, CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF OUR PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU. JET, Wilton and Powermatic sell through distributors only. The specifications listed in JET, Wilton and Powermatic printed materials and on official JET, Wilton and Powermatic-branded websites are given as general information and are not binding. JET, Wilton and Powermatic reserve the right to effect at any time, without prior notice, those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason whatsoever. JET® branded products are not sold in Canada by JPW Industries.

Product Listing with Warranty Period

  1. • 90 Days – Parts; Consumable items; Light-Duty Air Tools
  2. • 1 Year – Motors; Machine Accessories; Heavy-Duty Air Tools; Pro-Duty Air Tools
  3. • 2 Year – Metalworking Machinery; Electric Hoists, Electric Hoist Accessories; Woodworking Machinery used for industrial or commercial purposes.
  4. • 5 Year – Woodworking Machinery
  5. • Limited Lifetime – Wilton branded products; JET Parallel clamps; VOLT Series Electric Hoists Manual Hoists; Manual Hoist Accessories; Shop Tools; Warehouse & Dock products; Hand Tools

NOTE: JET, Wilton and Powermatic are divisions of JPW Industries. References in this document to JET, Wilton and/or Powermatic also apply to JPW Industries or any of its successors in interest to the JET, Wilton and/or Powermatic brands.