48A009 - Walter Thermal Insulating Flange for Backing Pads

Advanced Thermal Protection for Abrasive Assemblies

In high-intensity industrial grinding and finishing applications, friction-generated heat is an unavoidable byproduct that can severely impact the longevity of your equipment. The Walter Surface Technologies 48A009 Insulating Disc is a specialized accessory engineered to mitigate the damaging effects of thermal transfer within sanding disc assemblies. When using resin fiber discs, particularly those featuring aggressive ceramic or zirconia grains, the interface temperature can rise rapidly. Without adequate insulation, this heat is conducted directly into the backing pad, causing the rubber or plastic material to soften, warp, or even melt. This degradation not only destroys the backing pad but can also compromise the safety of the operation and the quality of the surface finish.

The 48A009 acts as a critical thermal barrier. Placed strategically between the abrasive disc and the backing pad, it interrupts the conductive path of heat, ensuring that the backing pad remains within its optimal operating temperature range. This preservation of the backing pad's structural integrity is vital for maintaining consistent pressure and flexibility during the grinding process. A backing pad that has softened due to heat cannot provide the uniform support required for a flat, even finish, leading to potential rework or rejected parts.

For MRO managers and fabrication supervisors, integrating the Walter Insulating Disc into standard operating procedures represents a proactive maintenance strategy. It is a cost-effective solution that significantly extends the service life of more expensive backing pads, reducing consumable costs and downtime associated with pad replacement. The disc is designed for durability and reuse, making it a permanent asset in the tool crib for heavy-duty material removal tasks. Whether working on stainless steel, carbon steel, or aluminum, the 48A009 ensures that your abrasive setup performs reliably under thermal stress.

Technical Benefits

• Thermal Isolation: Effectively decouples the heat source (abrasive disc) from the support structure (backing pad).


• Cost Efficiency: Reduces the frequency of backing pad replacement caused by thermal failure.


• Process Consistency: Helps maintain the mechanical properties of the backing pad for predictable grinding action.