3M 7000118393 Abrasive Belt 40 Grit 0.5x18 Ceramic

Product Description

The 3M 7000118393 is a coated abrasive belt designed for aggressive material removal in grinding, blending, and finishing applications. Built on a polyester cloth backing with YF weight rating, this belt uses ceramic aluminum oxide grain in a closed-coat configuration at 40 grit — a coarse grade suited for rapid stock removal on metals and hard materials. At 0.5 inches wide and 18 inches long, it fits compact belt tools used in tight spaces, weld seam work, and tube or pipe finishing. Wet or dry operation is supported, making it versatile across different shop and field setups.

This belt is intended for use on portable belt grinders, file belt machines, and narrow-platen tools common in metalworking, fabrication, and maintenance applications. The 777F series designation identifies the product line within the 3M abrasives catalog. The ceramic aluminum oxide abrasive self-sharpens under pressure, extending useful belt life compared to conventional aluminum oxide belts. Coarse 40 grit is appropriate for weld removal, deburring, and initial shaping passes before stepping to finer grits.

Key Features

• Ceramic aluminum oxide grain for self-sharpening, long-lasting cut
• 40 grit coarse grade suited for aggressive stock removal and weld blending
• Closed-coat construction delivers consistent surface contact and aggressive cutting action
• YF-weight polyester cloth backing resists tearing and flexes around contoured surfaces
• Supports both wet and dry operation
• 0.5 inch width fits narrow-platen and file belt machines used in tight-access work

Compatibility

Designed as a replacement or restocking belt for portable file belt grinders and narrow-belt machines that accept 0.5 inch x 18 inch abrasive belts.

Installation Notes

Belt installation should be performed with the tool unplugged or power source isolated. Confirm belt tracking direction against the arrow marked on the belt backing before running the machine. Inspect the platen and drive roller for wear before installing a new belt. Follow the tool manufacturer guidelines for tensioning and tracking adjustment.