Spiralcool h425-5/8-sb Backing Pad 4.5 Inches

Product Description

The SPIRALCOOL h425-5/8-sb is a 4.5-inch backing pad designed to support abrasive discs during grinding, sanding, and surface preparation work. The pad serves as the interface between the tool spindle and the abrasive, providing a stable, consistent backing surface that helps maintain even contact across the workpiece. It is sized at 4.5 inches in diameter and features a 5/8-inch arbor connection for compatibility with standard angle grinders and die grinders used in mechanical, HVAC, plumbing, and general trade service applications.

This backing pad is suited for use in residential and commercial jobsite environments where surface prep, rust removal, weld cleanup, or material finishing is required. It is a common consumable accessory for HVAC technicians, pipefitters, plumbers, and general maintenance trades who use angle grinders as part of their standard toolkit. The 5/8-inch spindle connection is a widely used thread specification across corded and cordless angle grinders in the 4.5-inch class.

Key Features

• 4.5-inch diameter backing pad for abrasive disc support
• 5/8-inch arbor spindle connection matches standard angle grinder thread spec
• Provides stable, even backing surface for consistent abrasive contact
• Compatible with hook-and-loop or threaded abrasive discs in the 4.5-inch size class

Compatibility

Designed as an OEM-style replacement backing pad for 4.5-inch class angle grinders fitted with a 5/8-inch spindle thread.

Installation Notes

Installation is performed by threading the pad directly onto the grinder spindle — ensure the tool is unplugged or the battery pack is removed before mounting or removing any accessory. Secure the pad according to the grinder manufacturer torque guidance using the appropriate spanner wrench. Inspect the pad for wear, cracking, or deformation before each use and replace if damaged. Always fit a properly rated abrasive disc and guard before operating the tool.

Technical Specifications

• Diameter: 4.5 inches
• Arbor Size: 5/8 inches

Standard Information

• Brand: SPIRALCOOL
• Manufacturer Part Number: h425-5/8-sb