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Back-up Pads: 3M™ Flexible Grinding Wheel Backup Pad 51046, 3-3/8 in x 7/8 in, 5 per inner 100 per case

Clear plastic support plate used to support 4-1/2 inch x 7/8 inch center hole flexible grinding wheel.

  • Flexible grinding wheel backup pad
  • Clear plastic support plate for 3M™ Green Corps Flexible Grinding Wheel
  • Provides less vibration and noise than a conventional grinding wheel
  • Use with right angle grinders
  • 45/8 inch and 33/8 inch outside diameter pad available
  • Very comfortable hand feeling and less downforce application required

Runs Smoother, Grinds Faster

Used with 3M™ Green Corp Flexible Grinding Wheels, the 3M™ Flexible Grinding Wheel Backup Pads provide uniform support and increased cut uniformity on contoured surfaces. Together they achieve high stock removal rate with minimal noise and vibration and can be used in edge beveling, chamfering, gate removal, and plate grinding. The backup pad is required for safe operation of flexible grinding wheels. Both pads feature a standard 7/8 inch diameter center hole.

Less Vibration, Reduced Chatter

This clear, flexible pad distributes pressure evenly over the work surface and cushions the abrasive action. The ease of use, lower vibration levels and reduced chatter resulting from the flexibility of the abrasive means it produces a better finish which is more easily blended. Less vibration and chatter serves to extend abrasive life, as well, and make for greater operator comfort.

The 3M™ Green Corps™ Flexible Grinding Wheel is a Type 27 depressed center, bonded wheel that offers enhanced flexibility to conform to contours, helping operators achieve a smoother finish on a variety of metals.

Depressed center wheels may also be referred to as raised hub wheels or by their shape designation of “Type”, with Type 27 being the most popular. The depressed center design allows the attachment mechanism to recess within the wheel so that it can be used for various grinding and cutting applications. Depressed center wheels are designed to handle the most severe right angle grinding applications from heavy stock removal to rough blending.

Weld Grinding and Stock Removal

With the 3M™ Green Corps™ Flexible Grinding Backup Plate, use 3M™ Green Corps™ Flexible Grinding Wheels with a right angle grinder for metal fabrication applications, including grinding, blending, weld leveling, metal prep and pipe notching.

  • Removal of welding seams
  • Removal of weld spatter
  • Deflashing
  • Descaling and heavy deburring


 Brand‎‎ 3M™
 Center Hole Diameter‎‎ 0.87 Inch
 Center Hole Diameter (Metric)‎‎ 22.098 mm
 Color‎‎ Clear
 Converted Form‎‎ Backup Pads, Disc
 Diameter‎‎ 3.37 Inch
 Diameter (Metric)‎‎ 85.598 mm
 Equipment - Machines‎‎ Right Angle Grinders
 Form Type‎‎ Type 27
 Industries‎‎ Marine,‎ Metalworking
 Product Form‎‎ Pad
 Sub Industries‎‎ Turbine Engines,‎ Metal Implants,‎ Plumbing Fixtures,‎ Plating & Polishing,‎ Builders Hardware,‎ Medical Instruments,‎ Metal Fabrication
 Type‎‎ Regular

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