3M 7000121718 Track Mandrel 3/4 Inch Shank

Product Description

The 3M 7000121718 is a steel track mandrel designed to mount center hole (CH) unitized wheels to die grinders and rotary tools. Unlike Quick Change attachment styles such as TS, TR, and TP, this mandrel is built specifically for standard CH wheels that lack a Quick Change interface. It accepts 1 inch diameter by 1 inch wide by 3/16 inch center hole unitized wheels and features a 3/4 inch shank for secure tool attachment. The all-steel construction provides the durability needed for heavy-duty grinding and finishing applications in metalworking and fabrication environments. Licensed tradespeople and shop technicians use it as a straightforward, reliable mounting solution.

This mandrel is suited for metal finishing, deburring, and surface blending tasks where access to tight or recessed areas is required. The added length it provides between the tool chuck and the abrasive wheel allows operators to reach confined workspaces that would otherwise be difficult to address with a standard wheel setup. It is well-suited for use in fabrication shops, maintenance facilities, and on-site metalwork where a die grinder or rotary tool is the primary driver.

Key Features

• Designed specifically for center hole (CH) unitized wheels without Quick Change attachments
• Drives 1 inch diameter by 1 inch wide by 3/16 inch CH unitized wheels
• 3/4 inch shank for compatibility with standard die grinder and rotary tool chucks
• All-steel construction for durability under heavy-duty, repetitive use
• Adds working length to improve access in hard-to-reach or confined areas

Compatibility

Designed for use with center hole (CH) unitized wheels measuring 1 inch diameter by 1 inch wide by 3/16 inch center hole that do not use Quick Change attachment styles (TS, TR, or TP).

Installation Notes

Installation is performed by machinists, fabricators, or maintenance technicians using a standard die grinder or rotary tool. Ensure the tool is fully powered down and disconnected from its power source before mounting or removing the mandrel and wheel assembly. Confirm the shank is fully seated and secured in the tool chuck before operation. Always verify the wheel is rated for the RPM of the tool being used before starting.

Technical Specifications

• Shank Size: 3/4 inch x 1/4 inch
• Compatible Wheel Size: 1 inch diameter x 1 inch wide x 3/16 inch center hole
• Material: Steel
• Weight: 0.43 pounds
• Package Dimensions: 12.38 x 12.38 x 3.75 inches
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000121718