4-1/2" X 5/8"-11 Resin Fiber Disc Backing Pad

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Product Specification

4-1/2" X 5/8"-11 RESIN FIBER DISC BACKING PAD

Benchmark Abrasives 4-1/2" resin fiber disc backing pad provides the rigid support needed to run 4-1/2" resin fiber discs on a right-angle grinder. The thermoplastic construction helps transfer grinding pressure efficiently to the workpiece for controlled stock removal, weld grinding, beveling, deburring, and surface preparation.

Raised spiral ribs and ventilation holes help promote airflow behind the abrasive disc to manage heat during use. The pad features a 5/8"-11 threaded attachment for compatible angle grinders and includes a lock nut for securing standard 4-1/2" x 7/8" resin fiber discs.

Quantity: 1 Backing Pad with Lock Nut

Dimensions & Specifications

Product Features

• Designed for 4-1/2" x 7/8" resin fiber discs
• Rigid thermoplastic construction provides firm support during grinding
• Raised spiral ribs and ventilation holes help promote airflow
• Helps transfer grinder pressure efficiently to the workpiece
• 5/8"-11 threaded attachment fits compatible angle grinders
• Includes lock nut for securing the resin fiber disc
• Suitable for aggressive grinding, stock removal, weld removal, and blending

Machines Used On

• Right-angle grinders rated for 4-1/2" accessories
• Angle Grinders with a 5/8"-11 Spindle

Disc Compatibility: Use with compatible 4-1/2" x 7/8" aluminum oxide, zirconia, ceramic, or silicon carbide resin fiber discs.

Always make sure the backing pad, abrasive disc, retaining hardware, and grinder are compatible in size and operating speed. Never exceed the maximum RPM of the lowest-rated component.

Applications

Use with resin fiber discs for:

• Stock removal
• Weld removal and blending
• Beveling and edge preparation
• Deburring
• Rust and corrosion removal
• Paint and coating removal
• Surface cleaning and preparation
• Blending and smoothing

Backing Pad Performance

• Pad Type: Rigid
• Support: Firm
• Best For: Aggressive grinding and stock removal
• Compatible Discs: 4-1/2" x 7/8" Resin Fiber Discs

Tip: A rigid backing pad transfers more pressure directly to the abrasive, making it well suited to coarse grits and demanding grinding applications. Resin fiber discs should always be used with a compatible backing pad.

Safety Tips & Techniques

• Inspect the backing pad, lock nut, abrasive disc, and grinder before use.
• Do not use a backing pad that is cracked, warped, melted, or excessively worn.
• Make sure the resin fiber disc sits flat and is properly secured before operation.
• Never exceed the maximum RPM of the backing pad, abrasive disc, or grinder.
• Keep the grinder guard properly installed and use appropriate personal protective equipment.
  
• Replace the backing pad if it no longer supports the disc evenly or causes unusual vibration.