3M 7000120410 Rubber Slotted Expander Wheel 1x1 in 1/4 in Shank

Product Description

The 3M 7000120410 is a rubber slotted expander wheel designed for use with abrasive bands or belts in grinding and finishing applications. The slotted rubber drum expands outward with centrifugal force as rotational speed increases, keeping the abrasive band tight and seated against the workpiece during operation. The wheel accepts a 1 inch diameter by 1 inch wide abrasive band and is fitted with a 1/4 inch diameter shank, making it compatible with standard 1/4 inch collet chucks and drill chucks. It is suited for deburring, blending, and surface conditioning work performed by machinists, fabricators, and maintenance technicians.

This expander wheel is used in rotary tool setups where consistent band tension is required throughout the grinding pass. Typical applications include metal deburring, weld blending, internal bore finishing, and contour grinding on ferrous and non-ferrous materials. The self-tightening drum design reduces band slippage without manual adjustment, making it practical for production or field maintenance environments where setup time matters.

Key Features

• Slotted rubber drum expands with centrifugal force to maintain consistent band tension during use
• Accepts 1 inch diameter by 1 inch wide abrasive bands or belts
• 1/4 inch diameter shank fits standard 1/4 inch collet chucks and drill chucks
• Eliminates need for manual band tensioning adjustments mid-operation
• Suited for deburring, weld blending, and surface finishing on metal workpieces

Compatibility

Designed for use with 1 inch diameter by 1 inch wide abrasive bands or belts. Fits any rotary tool, die grinder, or drill equipped with a 1/4 inch collet chuck or drill chuck.

Installation Notes

Installation is performed by machinists, fabricators, or maintenance technicians using standard rotary tool or die grinder setups. Ensure the tool is powered off and unplugged before mounting or removing the expander wheel from the chuck. Seat the shank fully into the collet or drill chuck and tighten securely before applying the abrasive band. Always confirm the abrasive band rating is appropriate for the operating RPM of the tool being used.

Technical Specifications

• Wheel Diameter: 1 inch
• Wheel Width: 1 inch
• Shank Diameter: 1/4 inch
• Compatible Band Size: 1 inch diameter x 1 inch wide
• Chuck Compatibility: 1/4 inch collet chuck or drill chuck
• Unit of Measure: Each
• UPC: 50051144777179

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000120410