3M 7100025550 Sanding Belt 320 Grit 48x4 Inch Silicon Carbide

Product Description

The 3M 7100025550 is a coated abrasive sanding belt designed for metal surface finishing and cosmetic polishing applications. Built on a heavy YF-weight polyester cloth backing with closed coat construction, this belt delivers aggressive cutting action and a fine, consistent finish. The silicon carbide mineral paired with cork particles works together to remove material efficiently while refining the surface to a fine finish. Resin bonding helps the abrasive withstand heat buildup during use, extending belt life in demanding applications. At 48 inches long and 4 inches wide with a 320 grit rating, this belt is suited for finishing work where surface quality matters.

This belt is used in metal fabrication and finishing environments where a controlled, fine surface finish is required. It is particularly well suited for producing the characteristic blue finish on stainless steel, a common specification in food service equipment, architectural metalwork, and industrial fabrication. The flexible polyester cloth backing allows the belt to conform to contoured and irregular surfaces, making it useful for parts that are not perfectly flat. It is typically installed and operated by metal finishing technicians and fabricators working with stationary or portable belt grinders and sanders.

Key Features

• YF-weight polyester cloth backing provides durability and flexibility for contoured surface work
• Silicon carbide abrasive and cork particles deliver aggressive cut with fine finishing capability
• Closed coat construction increases grain density for consistent finish on hard metal surfaces
• Resin bond system resists heat deterioration to extend belt service life
• Waterproof polyester material allows easy debris and swarf removal during use
• 320 grit rating suited for final finishing and cosmetic polishing stages

Compatibility

Designed for use on belt sanders and grinders accepting a 48 inch by 4 inch abrasive belt. Suitable for metal surface finishing applications including stainless steel cosmetic polishing.

Installation Notes

Belt installation should be performed by qualified personnel familiar with abrasive belt equipment. Always power down and lock out the sanding machine before installing or replacing the belt. Confirm belt tracking and tension per the equipment manufacturer guidelines before resuming operation. Inspect the belt for tears or damage prior to each use and do not exceed the maximum operating speed rated for the belt and machine combination.

Technical Specifications

• Grit: 320
• Belt Length: 48 inches
• Belt Width: 4 inches
• Abrasive Mineral: Silicon Carbide with Cork Particles
• Backing Material: YF-Weight Polyester Cloth
• Coat Type: Closed Coat
• Bond Type: Resin
• Weight: 0.48 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100025550