Benchmark Abrasives 2" quick change discs for aluminum are engineered for fast grinding, weld blending, deburring, and surface preparation on aluminum and other soft non-ferrous metals that can quickly load conventional abrasives. The aluminum oxide grain is treated with a specialized stearate coating that helps resist loading, clogging, and gumming so the abrasive keeps cutting instead of packing up with soft metal.
As heat develops during sanding, the stearate treatment softens slightly and helps create a barrier that reduces aluminum buildup on the abrasive surface. The result is a cleaner cut, longer usable disc life, and less downtime replacing clogged abrasives. The compact 2" size provides excellent control in tight spaces, around curves, inside corners, and on smaller components, while the Type R quick change attachment allows fast, tool-free disc changes as the job moves from aggressive removal to blending and surface prep.
Quantity: 25 Discs
Mixed Grit Pack: 20 Discs
Backing pad sold separately
Product Specifications
Specification
Details
Disc Diameter
2"
Abrasive Material
Aluminum Oxide
Coating
Stearate
Backing Material
X-Weight Cloth
Attachment Type
Type R Quick Change
Available Grits
36, 60
Maximum RPM
25,000
Use
Dry Only
Required Holder
Matching 2" Type R backing pad; sold separately
Product Features
Designed specifically for aluminum and other soft non-ferrous metals
Stearate coating helps resist loading, clogging, and gumming
Helps reduce heat buildup during grinding
Delivers fast stock removal with a consistent cut
Durable X-weight cloth backing for handheld sanding and grinding
Compact 2" diameter provides excellent control in tight areas
Type R quick change attachment allows fast, tool-free disc replacement
Available in 36 and 60 grit for aggressive removal through controlled blending
Materials & Applications
Common Materials
Aluminum
Zinc
Copper
Tin
Fiberglass
Plastic
Hard Rubber
Wood
Stone
Common Applications
Removing welds and weld discoloration
Deburring cut or machined aluminum edges
Blending surface imperfections
Removing oxidation and minor corrosion
Preparing aluminum surfaces for painting or coating
Smoothing castings and fabricated components
Cleaning scratches, blemishes, and tool marks
General grinding and surface preparation
Start with the least aggressive grit that removes material efficiently. This helps control scratch depth and reduces the amount of refinement needed in later finishing steps.
Machine Compatibility
Designed for rotary quick change sanding tools using a matching 2" Type R backing pad.
Recommended Benchmark Abrasives Tools
Benchmark Abrasives Right Angle Pneumatic Quick Change Sander
Follow the tool manufacturer's operating and safety instructions
Frequently Asked Questions
Use a matching 2" Type R holder. Compatible choices include the Benchmark Abrasives BMT-QC90 Right Angle and BMT-QCPG Pistol Grip Quick Change Sanders. Other verified examples include Milwaukee 2485-20, 2486-20, and 2984-20 when fitted with a suitable 1/4" shank holder. Always confirm the tool’s accessory capacity and the RPM rating of the complete assembly.
Aluminum and other soft metals can quickly load conventional abrasives. The stearate coating helps reduce material buildup so the abrasive stays cleaner and continues cutting more effectively.
As heat develops during sanding, the stearate treatment softens slightly and helps form a barrier between the abrasive and the workpiece. This reduces aluminum buildup, helping maintain a cleaner cut and extend usable abrasive life.
36 grit is the more aggressive option for heavier weld removal, deburring, and stock removal. 60 grit provides a more controlled cut for general grinding, blending, and surface preparation.
The compact diameter provides excellent control in tight spaces, around curves, inside corners, and on smaller fabricated components.
Yes. The published material list includes aluminum, zinc, copper, and tin.
Yes. Preparing aluminum surfaces for painting or coating is a published application. Because the abrasive uses a stearate coating, follow the cleaning requirements of the downstream coating, welding, or finishing process before moving to the next step.
Use a matching 2" Type R quick change backing pad. The backing pad is sold separately.
No. These discs are specified for dry use only.
Standard grit packs contain 25 discs; the mixed-grit pack contains 20 discs.
No. 25,000 RPM is the maximum rated speed. Never exceed the RPM rating of the lowest-rated component in the disc, holder, and tool assembly.
Benchmark Abrasives 2" quick change discs for aluminum are engineered for fast grinding, weld blending, deburring, and surface preparation on aluminum and other soft non-ferrous metals that can quickly load conventional abrasives. The aluminum oxide grain is treated with a specialized stearate coating that helps resist loading, clogging, and gumming so the abrasive keeps cutting instead of packing up with soft metal.
As heat develops during sanding, the stearate treatment softens slightly and helps create a barrier that reduces aluminum buildup on the abrasive surface. The result is a cleaner cut, longer usable disc life, and less downtime replacing clogged abrasives. The compact 2" size provides excellent control in tight spaces, around curves, inside corners, and on smaller components, while the Type R quick change attachment allows fast, tool-free disc changes as the job moves from aggressive removal to blending and surface prep.
Quantity: 25 Discs
Mixed Grit Pack: 20 Discs
Backing pad sold separately
Product Specifications
Specification
Details
Disc Diameter
2"
Abrasive Material
Aluminum Oxide
Coating
Stearate
Backing Material
X-Weight Cloth
Attachment Type
Type R Quick Change
Available Grits
36, 60
Maximum RPM
25,000
Use
Dry Only
Required Holder
Matching 2" Type R backing pad; sold separately
Product Features
Designed specifically for aluminum and other soft non-ferrous metals
Stearate coating helps resist loading, clogging, and gumming
Helps reduce heat buildup during grinding
Delivers fast stock removal with a consistent cut
Durable X-weight cloth backing for handheld sanding and grinding
Compact 2" diameter provides excellent control in tight areas
Type R quick change attachment allows fast, tool-free disc replacement
Available in 36 and 60 grit for aggressive removal through controlled blending
Materials & Applications
Common Materials
Aluminum
Zinc
Copper
Tin
Fiberglass
Plastic
Hard Rubber
Wood
Stone
Common Applications
Removing welds and weld discoloration
Deburring cut or machined aluminum edges
Blending surface imperfections
Removing oxidation and minor corrosion
Preparing aluminum surfaces for painting or coating
Smoothing castings and fabricated components
Cleaning scratches, blemishes, and tool marks
General grinding and surface preparation
Start with the least aggressive grit that removes material efficiently. This helps control scratch depth and reduces the amount of refinement needed in later finishing steps.
Machine Compatibility
Designed for rotary quick change sanding tools using a matching 2" Type R backing pad.
Recommended Benchmark Abrasives Tools
Benchmark Abrasives Right Angle Pneumatic Quick Change Sander
Follow the tool manufacturer's operating and safety instructions
Frequently Asked Questions
Use a matching 2" Type R holder. Compatible choices include the Benchmark Abrasives BMT-QC90 Right Angle and BMT-QCPG Pistol Grip Quick Change Sanders. Other verified examples include Milwaukee 2485-20, 2486-20, and 2984-20 when fitted with a suitable 1/4" shank holder. Always confirm the tool’s accessory capacity and the RPM rating of the complete assembly.
Aluminum and other soft metals can quickly load conventional abrasives. The stearate coating helps reduce material buildup so the abrasive stays cleaner and continues cutting more effectively.
As heat develops during sanding, the stearate treatment softens slightly and helps form a barrier between the abrasive and the workpiece. This reduces aluminum buildup, helping maintain a cleaner cut and extend usable abrasive life.
36 grit is the more aggressive option for heavier weld removal, deburring, and stock removal. 60 grit provides a more controlled cut for general grinding, blending, and surface preparation.
The compact diameter provides excellent control in tight spaces, around curves, inside corners, and on smaller fabricated components.
Yes. The published material list includes aluminum, zinc, copper, and tin.
Yes. Preparing aluminum surfaces for painting or coating is a published application. Because the abrasive uses a stearate coating, follow the cleaning requirements of the downstream coating, welding, or finishing process before moving to the next step.
Use a matching 2" Type R quick change backing pad. The backing pad is sold separately.
No. These discs are specified for dry use only.
Standard grit packs contain 25 discs; the mixed-grit pack contains 20 discs.
No. 25,000 RPM is the maximum rated speed. Never exceed the RPM rating of the lowest-rated component in the disc, holder, and tool assembly.
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