3M 7100100964 Quick-change Disc 2in 120 Grit Ceramic Tr

Product Description

The 3M 7100100964 is a 2-inch ceramic abrasive quick-change disc designed for fast material removal and surface finishing on metal and other hard substrates. Part of the 3M 787C series, it features a ceramic abrasive grain bonded with a resinoid bond onto a fiber backing. The disc mounts via a TR quick-change attachment system, allowing rapid disc swaps without additional hardware. Rated at a maximum of 30,000 RPM, it is suited for use with compatible pneumatic and electric right-angle grinders. The fine 120-grit cut produces a consistent scratch pattern suitable for blending, deburring, and surface prep work.

This disc is used in metal fabrication shops, maintenance and repair operations, and light industrial applications where fast, repeatable surface finishing is required. The ceramic grain resists heat and dulling better than aluminum oxide, making it a practical choice for harder steels and alloys. At 2 inches in diameter, it is sized for work in tight areas, corners, and contoured surfaces where a larger disc would be impractical. Trades that commonly use this disc include sheet metal workers, pipefitters, ironworkers, and maintenance technicians.

Key Features

• Ceramic abrasive grain from the 787C series provides durable, consistent cut on hard metals
• TR quick-change attachment allows tool-free disc changes on compatible right-angle grinders
• 30,000 RPM maximum speed rating suits high-speed pneumatic grinders
• Resinoid bond holds grain firmly across a range of stock removal and blending applications
• Fiber backing adds rigidity and durability under pressure
• 120 grit fine grade suited for surface blending, deburring, and pre-inspection prep

Compatibility

Designed for use with TR quick-change compatible right-angle grinders and die grinders that accept 2-inch discs. Verify your grinder mandrel accepts the TR attachment type before installation.

Installation Notes

Install and remove this disc only when the grinder is fully powered off and disconnected from its air or electrical supply. Confirm the grinder spindle speed does not exceed the 30,000 RPM disc rating before operation. Inspect the disc for cracks or damage before each use and do not use a damaged disc. Wear appropriate PPE including eye protection and gloves during disc changes and grinding operations.