3M 7000120430 Roloc Disc Backup Pad 4 Inches

Product Description

The 3M 7000120430 is a Roloc disc backup pad engineered to support 4-inch diameter Roloc abrasive discs during grinding, blending, and surface preparation work. The pad features a 1/4-20 internal thread that mounts directly to tools with a 1/4-20 external threaded shaft, providing a secure, vibration-resistant connection. The assembly includes a Roloc shank and adaptor, allowing quick disc changes without removing the pad from the tool. Weighing 0.41 pounds, it is a compact, lightweight unit suited for handheld pneumatic and electric grinders commonly used in metal fabrication, auto body, and general industrial applications.

This backup pad is used in applications where consistent disc support and repeatable surface contact are required. It is well suited for metal finishing, weld blending, paint removal, and prep work in automotive, fabrication shop, and light industrial environments. The included shank and adaptor assembly simplifies tool setup and reduces changeover time during production or repair work. It is typically installed and used by metal fabricators, auto body technicians, and general maintenance professionals.

Key Features

• Supports 4-inch diameter Roloc abrasive discs
• 1/4-20 internal thread mounts directly to tools with 1/4-20 external threaded shafts
• Includes Roloc shank and adaptor for quick disc attachment and removal
• Lightweight construction at 0.41 pounds for reduced operator fatigue
• Compatible with standard pneumatic and electric right-angle grinders used in trade applications

Compatibility

Designed for use with 3M Roloc 4-inch diameter abrasive discs and tools equipped with a 1/4-20 external threaded shaft.

Installation Notes

Thread the backup pad onto the tool shaft by hand until snug, then verify the Roloc shank and adaptor are fully seated before attaching an abrasive disc. Always power down and disconnect the tool from its air or electrical supply before mounting or removing the pad. Wear appropriate eye and hand protection during disc changes and operation. Follow the tool and abrasive manufacturer guidelines for maximum RPM ratings to avoid disc separation.

Technical Specifications

• Disc Diameter: 4 inches
• Thread Size: 1/4-20 internal thread
• Weight: 0.41 pounds
• UPC: 00051131055414
• Sold As: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000120430