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SKU 7010294911
Legacy SKU 61500190493
UPC 00048011331690
Product Number 337DC

The 3M™ Trizact™ Cloth Belt 337DC delivers consistently in intermediate to final finish, medium pressure applications. Designed with aluminum oxide and a grinding aid on a durable X- weight cloth backing, this belt is available in widths from 1/2 to 24 inches and grades from A300 to A30.

  • Macroreplicated abrasive "bricks" contain multiple layers of abrasive mineral, "channels" keep remove swarf and keep work surfaces cleaner
  • Controlled mineral breakdown delivers more consistent, predictable finishes over the life of the belt
  • Durable cloth belt is frequently able to grind and finish in one operation
  • Grinding aid reduces friction and keeps workpiece cool for dry grinding applications
  • Extra-long belt life reduces abrasive cost and inventory
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On it's way to you October 11  


Minimum Order 5 Items
Order Increment 5 Items
  High-Quality Cloth Belt Materials
Product Dimensions
Imperial Metric
Width 3 in 76.2 mm
Length 132 in 3352.8 mm
Shipping Dimensions
Weight 5.458 lb
Length 12 in
Width 12 in
Height 4.813 in
Grit Non Pertinent


  1. What is the 3M™ Trizact™ Cloth Belt 337DC?

    The 3M™ Trizact™ Cloth Belt 337DC is an abrasive belt made with microreplication technology for consistent cutting action and longer abrasive life. It has a film-lok backing that securely attaches to a back-up pad, which reduces vibration and enhances operator comfort.

  2. What are the dimensions of this belt?

    This particular belt comes in a length of 132 inches, a width of three inches, and with five liners per case.

  3. How durable is it?

    The A100 X-weight material used provides long-lasting durability over extended periods when heavy machinery or other aggressive equipment use contacts the abrasive.

  4. Q. Is it easy to attach or remove from my tools?

    . Yes! Thanks to Film-lok attachment system, changing or attaching these belts on your power tools will be quick and effortless while staying securely attached while you're working on surface finishing jobs without any flexing whatsoever at high speeds.

For industrial/occupational use only. Not for consumer sale or use.
3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use.  Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice.  Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage.  For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.
Long Life, Sustained Cut, Consistent Performance

The 3M™ Trizact™ Cloth Belt 337DC is a durable and high-performing abrasive belt that owes its consistent sustained cut rate to its uniquely engineered "bricks and channels" macroreplicated abrasive structure. The uniform abrasive "bricks" keep fresh cutting mineral constantly at the working surface, while the "channels" sweep debris away to discourage loading and keep the substrate clean.

The "bricks" consist of layers of mineral and grinding aid, up to 4 times as much as conventional aluminum oxide belts of the same grade. These dense layers of abrasive mineral lead to extra-long life and extremely consistent performance. The grinding aid protects heat-sensitive alloys from damage and reduces rework. Trizact belts start sharp and stay sharp, delivering a consistent cut that can often consolidate or eliminate process steps. In many cases, Trizact™ 337DC has the capacity to grind and finish in one step.

Microreplication: Engineering Surface Geometry

Building upon the principles of microreplication, 3M scientists developed larger, more diverse abrasive structures —cubes, spheres, ridges — identical in shape and optimized for a variety of applications. Microreplication allows 3M to design abrasives with varying shapes and formulations, to control the level of breakdown, cut, finish, and life.

These abrasive structures are arrayed precisely and uniformly across a film or cloth backing in a pattern calculated to deliver sustained cut rate and eliminate belt-to-belt variation.

Made to Tackle Difficult Metals

Trizact was developed especially for finishing more difficult processing materials like titanium, cobalt, stainless steel, as well as all exotic alloys in the aerospace, aviation, and medical industries. It is also effective for finishing applications on carbon steel, copper, bronze, aluminum, composite materials, and synthetics.

Recommended Applications

Use for dry intermediate finishing, blending, scratch refinement, or final dimensioning on robotic, semi-automated, automated, off-hand equipment, and portable file belt tools. Use Trizact™ Cloth 337DC belts with:

  • Medium hardness contact wheels (50-70 Shore A)
  • Rubber contact wheels
  • Smooth face to gentle serrated contact wheel

To prepare drawn carbon steel truck exhausts from rough to pre-plate finishes in as few steps as possible, we used a grade sequence of A100, A65, A30. Trizact™ 337DC outlasted a competitor by 2:1. For blending, final dimensioning, and finishing of turbine engine components, the grade A45 Trizact 337DC belt outlasted a competitor's belt by 4:1 times and produced a finer finish.

Creating More Perfect Surfaces

Microreplication is only one of 3M's platform of core technologies. Its perfectly calibrated arrays are designed to give materials new physical, chemical, or optical properties. The science that makes 3M's structured abrasives wear more evenly, last longer, and provide more pristine finishes on delicate components like medical implants is also the science that makes traffic signs brighter, and exterior building illumination capture and reflect light more brilliantly.

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