3M™ Diamond Microfinishing Film Belt 675L, 45 Mic, 4 in x 72 in

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Micron-graded diamond mineral delivers close tolerance precision finishes
Great for medium stock removal
Polyester film backing allows belt to be used dry or wet with water or oil-based lubricants
An exceptional film for thermal spray finishing of contour / complex shapes

For industrial/occupational use only. Not for consumer sale or use.

Specifications

Attribute Name	Value
Abrasive Material	Diamond
Application	Finishing
Backing Material	Polyester Film
Backing Thickness (Imperial)	5 mil
Brand	3M™
Color Family	Multi-color
For Use On	Carbide, Cast Iron, Ceramic, High Nickel Alloy, Oxides, Soft Metals, Stone
Industries	Aerospace, General Industrial, Precision Grinding & Finishing, Thermal Spray, Transportation & Heavy Equipment
Micron Grade	45 μm
Overall Length (Imperial)	72 in
Overall Length (Metric)	1828.8 mm
Overall Width (Imperial)	4 in
Overall Width (Metric)	101.6 mm
Product Color	Gray, Yellow
Product Form	Belt
Substrate	Carbide, Cast Iron, Ceramic, High Nickel Alloy, Oxide, Soft Metal, Stone

Product Details

Micron-graded diamond mineral delivers close tolerance precision finishes
Great for medium stock removal
Polyester film backing allows belt to be used dry or wet with water or oil-based lubricants
An exceptional film for thermal spray finishing of contour / complex shapes
Color coded to reduce the risk of error and mixing up abrasive grades

Designed with a strong polyester film backing and sharp diamond mineral, the 3M™ Diamond Microfinishing Film Belt 675L delivers fine finishes on hard metals like thermal spray coating, ceramics, carbides, chilled iron and granite.

Because of its unique construction, 675L film helps you achieve fast finish reduction in fewer passes

High-quality Materials for Micro-finishing
3M™ Diamond Microfinishing Film Belt 675L securely anchors micron-graded diamonds to a polyester film backing. Polyester film backings are water resistant, so the abrasive may be run with a water or oil-based lubricant, which helps wash away unwanted swarf and debris and keeps the abrasive running cool. The belts are also color coded by grade to help you reduce the risk of selecting the wrong grade.

Tips for Achieving Desired Roughness Average
Many Micro-finished products require a specific Ra, or roughness average, when applying to thermal spray coatings, carbides, ceramics, exotic alloys, or other composites. It is important for operators to consider these factors — Ra and substrate — when selecting the grade of film for this belt.

Resources

Brochures

3M Abras Prds for Grinding and Finishing of Hard-to-Grind Matls (PDF, 11.6MB)

Flyers

3M™ Microfinishing Film Product Portfolio Flyer PDF (PDF, 347.7KB)

Customer Reviews

Large Volume Order

If you are considering a large purchase of this or other 3M Abrasive products our inside sales team is ready to help by providing additional information and options that our industrial customers typically seek when making abrasive procurement decisions. Our technical expertise, customer support, and global capabilities put us in a unique position to address your biggest challenges, and we’ll do our best to prove that we should be your abrasive supplier of choice.

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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.