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Grinding Wheels

While flap discs might be the popular option in the abrasives category, grinding discs or grinding wheels are the preferred choice when heavy material removal is required. Our grinding wheels and discs are engineered for aggressive stock removal and extra-long life. Roark Supply Inc. quality-made metal grinding discs are designed for exceptional precision and consistency on all applications. Providing the ultimate finishes, our grinding wheels and cutting tools are used by industry professionals around the world. Browse our high-performance abrasive grinding wheels fit to meet the highest requirements of any job.

We offer grinding discs in various sizes including 4.5”, 5”, 6”, 7” and 9”.

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Pferd 4.5" and 5" Grinding Wheels - Made in Germany Pferd 4.5" and 5" Grinding Wheels - Made in Germany

  • High stock removal rate
  • Long service life
  • Type 27 – Depressed center wheel
  • Available in 7/8" and 5/8"-11
  • 4.5" RPM: 13,300
  • 5" RPM: 12,000

3M™ Silver 4.5", 5" and 7" Ceramic Depressed Center Wheels 3M™ Silver 4.5", 5" and 7" Ceramic Depressed Center Wheels

  • Premium performance in a value-packed wheel
  • Optimal balance of fast cutting and long life
  • Material: Ceramic
  • For ferrous metals; iron, steel & stainless steel
  • 4.5": Max RPM = 13,300
  • 5": Max RPM = 12,250
  • 7": Max RPM = 8,500
  • Contaminant free

3M Cubitron 3: 4.5" & 5" Depressed Center Grinding Wheels 3M Cubitron 3: 4.5" & 5" Depressed Center Grinding Wheels

  • Material: Ceramic Grain
  • Precision-shaped grain engineered to cut faster than competitive ceramic products
  • Triangular shaped ceramic grain wears evenly, runs cook and optimized mineral breakdown
  • Enhanced Speed - Delivers up to 15% increase cut rate compared to 3M Cubitron ll
  • Reduces time and pressure to get the job done
  • Fewer Changeovers - Removes up to 1.5x more material compared to 3M Cubitron ll
  • Specifically formulated for use on stainless steel, mild steel, and aerospace alloys
  • Increased wheel life and productivity
  • 4.5" / 13,300 Max RPM
  • 5" / 12,250 Max RPM

SAIT 4.5" & 5" Depressed Center Grinding Wheels - Made in USA SAIT 4.5" & 5" Depressed Center Grinding Wheels - Made in USA

  • Superior quality and design
  • Soft bond for fast stock removal
  • Designed for steel & stainless steel
  • T27
  • 4.5" = 13,300 RPM
  • 5" = 12,200 RPM
  • Made in USA

Rex-Cut Sigma Green 4.5" Grinding Wheel Rex-Cut Sigma Green 4.5" Grinding Wheel


  • High performance grain
  • Fast stock removal
  • Superior finish
  • Grinds smooth and quiet
  • Won't discolor or warp stainless steel
  • RPM = 13,300

Rex-Cut Sigma Green Max 4.5" Grinding Wheel Rex-Cut Sigma Green Max 4.5" Grinding Wheel


  • High performance grain
  • Fast stock removal
  • Added life
  • Controlled grinding
  • Cool grinding action
  • RPM = 13,300

Rex-Cut Sigma Z 4.5" Grinding Wheel Rex-Cut Sigma Z 4.5" Grinding Wheel


  • Premium grain
  • Rapid stock removal
  • Long life
  • Controlled grinding
  • Minimizes operator fatigue
  • RPM = 13,300

Pearl 4.5" and 5" Redline Max-A.O. Depressed Center Wheels Pearl 4.5" and 5" Redline Max-A.O. Depressed Center Wheels


  • Material: Aluminum Oxide
  • For ferrous metals; iron, steel & stainless steel
  • Type 27 – Depressed center flat wheel
  • Less vibration
  • Cooler grinding
  • Non-loading
  • Increased grinding efficiency

Pearl 7" and 9" Redline™ Max-A.O.™ Depressed Center Wheels Pearl 7" and 9" Redline™ Max-A.O.™ Depressed Center Wheels


  • Material: Aluminum Oxide
  • For ferrous metals; iron, steel & stainless steel
  • Type 27 – Depressed center flat wheel
  • Less vibration
  • Cooler grinding
  • Non-loading
  • Increased grinding efficiency