3M 7000121950 Unitized Abrasive Wheel 3 Inch Aluminum Oxide

Product Description

The 3M 7000121950 is an extra-hard density unitized abrasive wheel designed for aggressive edge deburring and surface finishing on ferrous and non-ferrous metals. Built around aluminum oxide mineral in a non-woven construction, this 900 Series wheel delivers the highest density and edge durability in the Standard Abrasives Unitized Wheel line. At 3 inches in diameter, it attaches to compatible rotary tools and machines via a unitized wheel mandrel, sold separately. Metal fabricators and machinists use this wheel for heavy-duty burr removal and polishing passes where softer wheels wear too quickly or lack the cutting aggression needed on harder alloys.

This wheel is suited for deburring, blending, and light finishing operations on steel, stainless steel, aluminum, and other ferrous and non-ferrous metals. The extra-hard density makes it a strong fit for production environments and job-shop settings where wheel life and consistent cut rate matter on harder workpiece materials. It runs in both clockwise and counterclockwise directions, adding flexibility when mounting on different tool configurations or automated equipment.

Key Features

• Extra-hard density aluminum oxide construction for aggressive deburring on hard metals
• Higher density and edge durability than 800 Series Unitized Wheels, extending service life on heavy-duty tasks
• Aluminum oxide mineral works on both ferrous metals and non-ferrous metals including aluminum
• Bidirectional operation — runs clockwise and counterclockwise for versatile tool pairing
• 3-inch diameter center-hole wheel mounts with a unitized wheel mandrel (sold separately)

Compatibility

Designed for use with rotary tools and machines that accept a center-hole unitized wheel mandrel; compatible with the Standard Abrasives unitized wheel mandrel system as a 900 Series replacement for heavy-duty deburring applications.

Installation Notes

Installation and wheel changes should be performed by qualified personnel following applicable machine guarding and abrasive wheel safety standards. Power down and de-energize the tool before mounting or removing the wheel. Confirm the mandrel and spindle speed rating meet or exceed the wheel's maximum rated RPM before operation. Inspect the wheel for damage prior to each use and discard any wheel showing cracks, chips, or distortion.

Technical Specifications

• Diameter: 3 inches
• Abrasive Type: Aluminum Oxide
• Construction: Non-Woven Unitized
• Series: 900 Series
• Density Grade: Extra Hard
• Rotation: Clockwise and Counterclockwise
• Weight: 1.05 pounds
• Package Dimensions: 7.31 x 4.19 x 3.88 inches
• UPC: 051115333533

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000121950