Dynabrade 90403 Abrasive Belt 1/4x24 in Aluminum Oxide

Product Description

The DYNABRADE 90403 is a non-woven abrasive belt engineered for fine surface finishing work on metal, wood, and composite materials. Measuring 1/4 inch wide by 24 inches long, this belt is sized for narrow-profile pneumatic and electric file sanders commonly used in tight contours, weld seam blending, and detail work. The abrasive material is aluminum oxide in a very fine grade, mounted on a scrim backing. The non-woven construction conforms to irregular surfaces and delivers consistent scratch patterns without aggressive stock removal, making it the right choice for finishing passes and pre-polish prep.

This belt is suited for both wet and dry operation, giving technicians flexibility in metalworking, fabrication, and surface prep applications. The 1/4-inch width targets narrow-belt file sanders and detail grinders used in maintenance, repair, and light manufacturing environments. It is sold individually and fits tool platforms that accept 1/4 inch by 24 inch belts.

Key Features

• Aluminum oxide abrasive in very fine grade for finishing and pre-polish passes
• Non-woven construction conforms to curved and contoured surfaces
• Scrim backing provides flexibility and durability during extended use
• Compatible with wet and dry operating conditions
• 1/4 inch by 24 inch form factor fits narrow-belt file sanders and detail tools

Compatibility

Designed as a direct-fit replacement belt for narrow-profile abrasive file sanders and belt tools accepting 1/4 inch by 24 inch belts. Confirm tool specifications before ordering.

Installation Notes

Installation is typically performed by machinists, fabricators, or maintenance technicians. Power down and disconnect the tool from its air supply or electrical source before changing the belt. Ensure the belt tracks centered on the platen or contact arm before resuming operation. Inspect the belt for tears or delamination before each use and replace if damage is found.