CGW 34021 20" X 2" X 8" T7 91A-46I 46-Grit Premium Blue Aluminum Oxide Surface Grinding Wheel

The CGW 34021 is a premium blue aluminum oxide surface grinding wheel designed for aggressive stock removal while delivering precise finish and size control. Manufactured with a premium 46-grit, 91AB grain blend, this wheel emphasizes sharpness and durability for demanding grinding applications. Its 20" diameter, 2" thickness, and 8" arbor/shank size are configured for compatible surface grinders, enabling steady material removal with controlled heat generation. The Type 7 profile indicates a recessed, flared wheel suitable for conventional surface grinding operations on larger workpieces.

Key construction features include a premium blue aluminum oxide bond that supports faster cutting action and improved wear resistance compared with standard WA or PA wheels. This combination typically yields a cooler cut, which is advantageous when grinding heat-sensitive alloys and mold steels—especially those in the high-speed range below 58 RC. The wheel is rated to run at 1623 RPM, aligning with common heavy-duty grinding machines and offering a balance of speed, control, and material compatibility while maintaining appropriate wheel life for routine maintenance tasks.

In practice, this wheel is well-suited for applications requiring significant material removal without sacrificing dimensional accuracy. When selecting a wheel, ensure the grinder's arbor matches the 8" shank and that the machine speed aligns with the 1623 RPM rating to avoid excessive heat or wheel wear. Packaging details indicate each wheel is sold individually with a box quantity of 2, which is useful for stocking and replacement planning. For best results, confirm compatibility with your specific grinding operation and material family before purchasing.

Features:

• Premium blue aluminum oxide grain for sharpness and durability
• Heavy stock removal with precise finish and size control
• Fast, cool cutting characteristics for heat-sensitive materials
• Durable performance superior to WA and PA bonds
• Type 7 grinding wheel for surface grinding applications
• Grit 46 for balanced material removal and finish
• 32–60 RC compatible performance (high-speed steels under 58RC)