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Deal.ai › Belt Sanders
M7
M7 Air Belt Sander QB-312

M7 Air Belt Sander QB-312

Best price now

$238.48at JB ToolsChecked Nov 9

Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Last seen at $238.48 at JB Tools on Nov 9.

    • Our take on the M7 Air Belt Sander QB-312

    The M7 QB-312 is a pneumatic belt sander that runs 3/4-inch by 20-1/2-inch belts at up to 16,000 RPM. Its narrow belt and slim arm reach welds, rust, paint and burrs in tight spots that a full-size belt sander or grinder cannot. It needs a compressor and air line, so it suits shops and garages already set up for air tools rather than casual home users. Against electric belt sanders it trades plug-in convenience for a smaller head, lower weight and no motor heat, and it sits in the same class as other 3/4-inch air sanders such as the Astro and Ingersoll Rand models.

    Best forAuto and motorcycle bodywork and weld cleanupBoat and marine repair in tight spacesMetal fabrication and deburringShops with an air compressor already in place
    Pros
    • Narrow 3/4-inch belt reaches welds and corners a full-size sander cannot
    • Up to 16,000 RPM for fast stock removal on metal
    • Air motor has no electric motor heat and keeps running under load
    • Compact, light body is easier to control one-handed in awkward spots
    • Uses common 3/4 x 20-1/2-inch belts, which are easy to find
    Cons
    • Needs a compressor with enough CFM and a dry air line; performance drops on a weak supply
    • No dust collection, so sanding dust goes into the air
    • Air exhaust and motor noise are loud, so hearing protection is needed
    • Belt tracking and tension usually need adjusting before first use
    • Not suited to large flat panels, where a bigger belt sander is faster

    M7 Air Belt Sander QB-312 prices at every store

    • JB ToolsNew

      In stock

      $238.48Free shippingChecked Nov 9
      Visit JB Tools

    Store links may earn us a commission. Price via Klarna.

    M7 Air Belt Sander QB-312 price history

    Lowest price we've seen: $238.48 on Nov 10 at JB Tools. Tracked across 1 store since Nov 10.

    From JB Tools

    • Air belt sander with 3/4" x 20-1/2" belt
    • 16000 RPM
    • Common applications include sanding and smoothing of welds, paint, rust and deburring removal in difficult-to-access locations
    • Application: Automotive / Motorcycle / Industry / Boat
    Guarantee
    JB Tools offers a 100% satisfaction guarantee and a best-in-class Warranty Program on all products it sells; manufacturer warranty may not be honored because JB
    Returns
    60-day hassle-free returns; replacement (subject to availability) or full refund less return shipping costs, at the customer's option.
    Shipping
    Free shipping on orders over a stated amount; global shipping with fast delivery; international orders not accepted during the store's move.

    About the M7 Air Belt Sander QB-312

    The M7 Air Belt Sander QB-312 is a pneumatic (air-powered) belt sander. It uses a 3/4" x 20-1/2" belt and runs at up to 16,000 RPM.

    It is used for sanding and smoothing welds, paint and rust, and for removing burrs, including in hard-to-reach places. Applications include automotive, motorcycle, industrial and boat work.

    Type
    Air belt sander
    Belt size
    3/4" x 20-1/2"
    Max speed
    16,000 RPM
    Uses
    Sanding welds, paint and rust; deburring
    Applications
    Automotive, motorcycle, industrial, boat

    Specifications

    RPM (max) (rpm)
    16000.0Source

    Questions and answers

    What compressor does the QB-312 need?
    It is an air tool, so it needs a compressor that can sustain the sander's air consumption at working pressure. A small pancake compressor will run it in bursts; a larger tank and higher CFM keep it from bogging down during long sanding.
    What belts does it take?
    It uses 3/4-inch wide by 20-1/2-inch long sanding belts. That size is common, so you can find it in several grits from abrasives sellers.
    Can it sand wood?
    It can, but it is built for metal work: weld smoothing, rust and paint removal, and deburring. On wood its narrow belt and high speed make it better for shaping and tight spots than for flattening panels.
    How does it compare with an electric belt sander?
    The air sander is smaller and lighter and reaches places a full-size electric sander cannot, and its motor does not overheat. The electric sander needs no compressor and usually has dust collection.
    Does it come with belts?
    Most air belt sanders in this class ship as the bare tool, so plan on buying belts in the grits you need separately.
    Is it good for auto body work?
    Yes. Its 3/4-inch belt fits into door jambs, wheel wells and weld seams, which is where body shops use this type of sander most.
    Where is the M7 Air Belt Sander QB-312 cheapest?
    At JB Tools, for $238.48, as of our latest check.