3M 7000120535 Flange Adapter for 5 to 8 Inch Flap Wheels

Product Description

The 3M 7000120535 is a stamped and formed sheet metal flange adapter designed to reduce a 1-inch internal diameter core, flange, or wheel bore to accept shafts smaller than 1 inch in diameter. It allows abrasive flap wheels with a 1-inch arbor hole to be mounted on equipment with a 0.5-inch spindle. This adapter is a practical hardware solution for grinding and finishing applications where bore-to-spindle mismatch would otherwise prevent wheel installation. It is commonly installed by metalworkers, maintenance technicians, and fabrication professionals working with angle grinders and bench grinders in industrial or shop environments.

This flange adapter is compatible with 5-inch through 8-inch diameter 3M flap wheels that carry a 1-inch bore. It is suited for use in metal fabrication, surface blending, deburring, and finishing operations where a secure, centered wheel mount is required. The stamped sheet metal construction keeps the adapter lightweight while providing a stable mechanical interface between the wheel and the spindle.

Key Features

• Reduces 1-inch bore diameter to accept shafts smaller than 1 inch, including 0.5-inch spindles
• Fits 5-inch through 8-inch diameter flap wheels
• Stamped and formed sheet metal construction for consistent dimensional accuracy
• Enables use of standard 1-inch bore flap wheels on smaller-spindle equipment
• Sold as a kit unit; minimum order quantity of 1

Compatibility

Designed for use with 5-inch through 8-inch diameter flap wheels that have a 1-inch internal diameter bore. Intended for spindles with a diameter smaller than 1 inch, including 0.5-inch shafts.

Installation Notes

Power down and de-energize the grinder or finishing tool completely before installing or removing any wheel or adapter. Ensure the spindle thread direction is confirmed before tightening the mounting hardware, as some grinder spindles use left-hand threads to prevent loosening under rotation. Verify that the flap wheel, adapter, and spindle assembly are properly seated and secured before resuming operation. Follow the tool and wheel manufacturer guidelines and applicable ANSI safety standards for abrasive wheel mounting.

Technical Specifications

• Bore Reduction: 1 inch to smaller than 1 inch (including 0.5 inch)
• Compatible Wheel Diameter: 5 to 8 inches
• Construction: Stamped and formed sheet metal
• Weight: 2.15 pounds
• UPC: 00051144450350

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000120535