3M 7000028423 Wheel Adapter Kit No. 3 5/8-11 External

Product Description

The 3M 7000028423 is a Wheel Adapter Kit No. 3 designed to mount abrasive and finishing wheels onto grinding and surface-conditioning equipment with a 5/8-11 external spindle thread. The kit provides the hardware needed to adapt wheels with a 5/8-inch or 1-inch arbor hole to a compatible spindle, enabling secure, centered wheel mounting. Each kit ships complete with all required hardware: a spindle extension, four 3/8-inch wide spacers, two 3/16-inch wide spacers, one 1-inch arbor hole adapter, one cap nut, and one Allen wrench. Metalworking professionals, fabricators, and maintenance technicians use this kit to configure wheel setups quickly without sourcing individual components.

This adapter kit is intended for use with 3M Rubber Slotted Expander wheels in professional grinding and surface-finishing applications. It accommodates wheels with either a 5/8-inch or 1-inch arbor hole, making it practical for shops that run multiple wheel sizes on the same equipment. Typical installation scenarios include metal fabrication, weld blending, and surface preparation work where consistent wheel alignment and secure mounting are critical to safe operation and finish quality.

Key Features

• Complete kit includes spindle extension, spacers, arbor hole adapter, cap nut, and Allen wrench — no additional hardware required
• Fits wheels with 5/8-inch or 1-inch arbor holes for versatile wheel compatibility
• 5/8-11 external thread configuration matches common bench and angle grinder spindles
• Four 3/8-inch wide spacers and two 3/16-inch wide spacers allow precise axial positioning of the wheel
• Designed specifically for use with 3M Rubber Slotted Expander wheels PN28348 and PN28349

Compatibility

Designed for use with 3M Rubber Slotted Expander wheels PN28348 and PN28349. Fits wheels with a 5/8-inch or 1-inch arbor hole on spindles with a 5/8-11 external thread.

Installation Notes

Installation should be performed by a qualified technician familiar with abrasive wheel mounting practices. Ensure all power is disconnected and the equipment is fully de-energized before mounting or removing any wheel assembly. Verify that the spindle thread engagement is complete and the cap nut is seated securely before operation. Follow all applicable ANSI B7.1 safety requirements for the mounting and use of abrasive wheels.

Technical Specifications

• Thread Size: 5/8-11 External
• Arbor Hole Compatibility: 5/8 inches or 1 inch
• Spacer Widths Included: 3/8 inches (qty 4) and 3/16 inches (qty 2)
• Weight: 1.68 pounds
• Unit of Measure: Kit
• UPC: 00051144450381

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000028423