McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    31 Products

    Rubber-Cushioned Abrasive Grinding Bits for Metals

    Image of Product. Bottom orientation. Grinding Bits. Rubber-Cushioned Abrasive Grinding Bits for Metals, Style 1.
    Image of Product. Bottom orientation. Grinding Bits. Rubber-Cushioned Abrasive Grinding Bits for Metals, Style 5.
    Image of Product. Bottom orientation. Grinding Bits. Rubber-Cushioned Abrasive Grinding Bits for Metals, Style 6.
    Image of Product. Bottom orientation. Grinding Bits. Rubber-Cushioned Abrasive Grinding Bits for Metals, Style 7.
    Image of Product. Bottom orientation. Grinding Bits. Rubber-Cushioned Abrasive Grinding Bits for Metals, Style 12.

    Style

    1

    Style

    5

    Style

    6

    Style

    7

    Style

    12

    The abrasive grains in these bits are blended with rubber, which cushions during grinding to produce a smoother surface texture than other bits with similar grits. Bits are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.
    Caution: As bit shank is exposed beyond 1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
    Cylinder
    Image of Product. Bottom orientation. Grinding Bits. Rubber-Cushioned Abrasive Grinding Bits for Metals, Style 1.

    Style

    1

    For Aluminum, For Brass, and For Bronze—Bits for aluminum, brass, and bronze are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup.
    Head
    Abrasive
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Shape
    No.
    Material
    Bond
    Material
    Shank
    Lg.
    Grit (Surface Texture)
    Each
    For Aluminum, Brass, and Bronze
     
    1/8" Diameter Shank
    11/8"1/4"35,000W142Silicon CarbideRubber
    1 1/2"220 (Extra Smooth) Silver4919A979000000
    11/8"1/4"35,000W144Silicon CarbideRubber
    1 1/2"220 (Extra Smooth) Silver4919A80700000
    11/8"1/2"35,000W146Silicon CarbideRubber
    1 1/2"220 (Extra Smooth) Silver4919A71400000
     
    1/4" Diameter Shank
    11"1"34,500A38Silicon CarbideRubber
    1 1/2"220 (Extra Smooth) Silver4919A70100000
    11"2"15,900W222Silicon CarbideRubber
    1 1/2"220 (Extra Smooth) Silver4919A79600000
     
    Oval
    Image of Product. Bottom orientation. Grinding Bits. Rubber-Cushioned Abrasive Grinding Bits for Metals, Style 7.

    Style

    7

    For Aluminum, For Brass, and For Bronze—Bits for aluminum, brass, and bronze are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup.
    Head
    Abrasive
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Shape
    No.
    Material
    Bond
    Material
    Shank
    Lg.
    Grit (Surface Texture)
    Each
    For Aluminum, Brass, and Bronze
     
    1/8" Diameter Shank
    71/8"5/16"35,000B46Silicon CarbideRubber
    1 1/2"220 (Extra Smooth) Silver4919A703000000
     
    Cone
    Image of Product. Bottom orientation. Grinding Bits. Rubber-Cushioned Abrasive Grinding Bits for Metals, Style 5.

    Style

    5

    For Aluminum, For Brass, and For Bronze—Bits for aluminum, brass, and bronze are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup.
    Head
    Abrasive
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Shape
    No.
    Material
    Bond
    Material
    Shank
    Lg.
    Grit (Surface Texture)
    Each
    For Aluminum, Brass, and Bronze
     
    1/8" Diameter Shank
    53/16"5/16"35,000B45Silicon CarbideRubber
    1 1/2"220 (Extra Smooth) Silver4919A702000000
     
    1/4" Diameter Shank
    53/4"1 1/8"35,000A5Silicon CarbideRubber
    1 1/2"220 (Extra Smooth) Silver4919A67600000
    51 1/8"1 1/8"33,950A13Silicon CarbideRubber
    1 1/2"220 (Extra Smooth) Silver4919A68800000
    51 1/4"1 1/4"30,560A4Silicon CarbideRubber
    1 1/2"220 (Extra Smooth) Silver4919A69400000
     
    Flat-Top Cone
    Image of Product. Bottom orientation. Grinding Bits. Rubber-Cushioned Abrasive Grinding Bits for Metals, Style 6.

    Style

    6

    For Aluminum, For Brass, and For Bronze—Bits for aluminum, brass, and bronze are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup.
    Head
    Abrasive
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Shape
    No.
    Material
    Bond
    Material
    Shank
    Lg.
    Grit (Surface Texture)
    Each
    For Aluminum, Brass, and Bronze
     
    1/8" Diameter Shank
    61/8"1/4"35,000B96Silicon CarbideRubber
    1 1/2"220 (Extra Smooth) Silver4919A712000000
    61/8"3/8"35,000B97Silicon CarbideRubber
    1 1/2"220 (Extra Smooth) Silver4919A70800000
     
    Taper
    Image of Product. Bottom orientation. Grinding Bits. Rubber-Cushioned Abrasive Grinding Bits for Metals, Style 12.

    Style

    12

    For Aluminum, For Brass, and For Bronze—Bits for aluminum, brass, and bronze are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup.
    Head
    Abrasive
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Shape
    No.
    Material
    Bond
    Material
    Shank
    Lg.
    Grit (Surface Texture)
    Each
    For Aluminum, Brass, and Bronze
     
    1/4" Diameter Shank
    121/4"1 1/16"35,000A15Silicon CarbideRubber
    1 1/2"220 (Extra Smooth) Silver4919A697000000
     

    Long-Life Grinding Bits for Nonmetals

    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 1.

    Style

    1

    The diamond abrasive in these bits is extremely hard and lasts longer than tungsten carbide. For longer tool life and improved finish, use a water- or oil-soluble mist or coolant.
    Bits are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.
    Caution: As bit shank is exposed beyond 1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
    Cylinder
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 1.

    Style

    1

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface Texture)
    Each
    For Carbide, Ceramics, and Glass
     
    1/8" Diameter Shank
    10.03"0.08"100,000Diamond2 1/4"220 (Extra Smooth) Silver4376A11000000
    10.04"0.08"100,000Diamond2 1/4"220 (Extra Smooth) Silver4376A1200000
     

    Long-Life Grinding Bits for Metals

    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Metals .
    Similar to diamond, boron nitride is harder than aluminum oxide and lasts longer. Bits are also known as jig grinding pins and mandrels.
    Head diameter is measured at the widest point.
    Caution: As bit shank is exposed beyond 1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
    Cylinder
    Head
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface Texture)
    Each
    For Steel, Stainless Steel, and Iron
     
    1/8" Diameter Shank
    0.03"0.08"100,000Boron Nitride2 1/4"220 (Extra Smooth) Silver4338A12000000
    0.04"0.08"100,000Boron Nitride2 1/4"220 (Extra Smooth) Silver4338A1100000
     

    Spiral-Wound Cartridge Sanding Rolls

    Image of Product. Front orientation. Cartridge Sanding Rolls. Spiral-Wound Cartridge Sanding Rolls, Cone.

    Cone

    As the outer layer wears away, new abrasive is exposed. A shank adapter or tapered spindle with a shank is required (both sold separately). The most common abrasive material, aluminum oxide is hard enough to sand steel and wood. The diameter listed is for the large end of the roll.
    Cone—Cone rolls are for use in holes. Unlike tapered rolls, they have a flat surface to allow for a more even finish within internal surfaces.
    Dia.
    Lg.
    Arbor Hole
    Dia.
    Max. Rotation
    Speed
    Abrasive
    Material
    Abrasive Backing
    Material
    For Use On
    For Use With
    Grit
    Pkg.
    Qty.
    Pkg.
    Cone
     
    For Smooth Finish
    3/8"1"3/16"Not RatedAluminum OxideClothSteel, WoodGrinders for Bits and Burs220108113N11200000
     

    Adhesive-Back Sanding Discs

    Image of Product. Front orientation. Sanding Discs. Adhesive-Back Sanding Discs.
    Press these discs onto sanding tools or backup pads for a hold that won’t slip. To ensure the best bond, clean the pad with a mild alcohol—avoid harsh solvents such as MEK and acetone that can damage the adhesive. Also known as PSA discs.
    Cloth Abrasive Backing—Resist tearing and hold up to wet sanding better than paper-backed discs.
    Aluminum Oxide Abrasive—The most versatile and affordable abrasive we offer. Aluminum oxide is the go-to choice for general purpose sanding.
    Grit—The lower the grit number, the rougher the finish and the duller the appearance. The higher the grit number, the more polished the finish and the more satin or mirrored the appearance.
    Dia.
    Abrasive Backing
    Material
    For Use On
    For Use With
    Grit
    Pkg.
    Qty.
    Pkg.
    Aluminum Oxide Abrasive
     
    For Smooth Finish
    1/2"ClothSteel, WoodGrinders for Bits and Burs, Portable Disc Sanders2201004700A62200000
    3/4"ClothSteel, WoodGrinders for Bits and Burs, Portable Disc Sanders2201004700A6320000
    1"ClothSteel, WoodGrinders for Bits and Burs, Portable Disc Sanders2201004700A64200000
    1 1/2"ClothSteel, WoodGrinders for Bits and Burs, Portable Disc Sanders220504700A6520000
    2"ClothSteel, WoodGrinders for Bits and Burs, Portable Disc Sanders220504700A66200000
    3"ClothSteel, WoodGrinders for Bits and Burs, Portable Disc Sanders220254700A6720000
    4"ClothSteel, WoodGrinders for Bits and Burs, Portable Disc Sanders220104700A6820000
     

    Hook and Loop Sanding Discs for Stainless Steel and Hard Metals

    Image of Product. Front orientation. Sanding Discs. Hook and Loop Sanding Discs for Stainless Steel and Hard Metals.
    The extra-sharp abrasive cuts through hard metals faster than other discs. A hook-and-loop mount lets you switch grits and avoid the waste of adhesive-backed discs, which are done after one use. Pair with a compatible sanding tool or backup pad (sold separately).
    Cloth Abrasive Backing—Resist tearing and hold up to wet sanding better than paper-backed discs.
    Silicon Carbide Abrasive—Super sharp to cut quickly under light pressure. Silicon carbide is hard but brittle, so it tends to wear out sooner than other abrasives.
    Grit—The lower the grit number, the rougher the finish and the duller the appearance. The higher the grit number, the more polished the finish and the more satin or mirrored the appearance.
    Dia.
    Abrasive Backing
    Material
    For Use On
    For Use With
    Grit
    Pkg.
    Qty.
    Pkg.
    Silicon Carbide Abrasive
     
    For Smooth Finish
    2"ClothIron, Nickel, Stainless Steel, Steel, TitaniumGrinders for Bits and Burs, Portable Disc Sanders220504611A441000000
    3"ClothIron, Nickel, Stainless Steel, Steel, TitaniumGrinders for Bits and Burs, Portable Disc Sanders220104611A45500000
    4"ClothIron, Nickel, Stainless Steel, Steel, TitaniumGrinders for Bits and Burs, Portable Disc Sanders220104611A46900000
     

    Adhesive-Back Sanding Discs for Stainless Steel and Hard Metals

    Image of Product. Front orientation. Sanding Discs. Adhesive-Back Sanding Discs for Stainless Steel and Hard Metals.
    The abrasive on these discs is sharp and durable enough to cut hard metals without dulling quickly. Press discs onto sanding tools or backup pads for a hold that won’t slip. To ensure the best bond, clean the pad with a mild alcohol—avoid harsh solvents such as MEK and acetone that can damage the adhesive. Also known as PSA discs.
    Cloth Abrasive Backing—Resist tearing and hold up to wet sanding better than paper-backed discs.
    Silicon Carbide Abrasive—Super sharp to cut quickly under light pressure. Silicon carbide is hard but brittle, so it tends to wear out sooner than other abrasives.
    Grit—The lower the grit number, the rougher the finish and the duller the appearance. The higher the grit number, the more polished the finish and the more satin or mirrored the appearance.
    Dia.
    Abrasive Backing
    Material
    For Use On
    For Use With
    Grit
    Pkg.
    Qty.
    Pkg.
    Silicon Carbide Abrasive
     
    For Smooth Finish
    2"ClothIron, Nickel, Stainless Steel, Steel, TitaniumGrinders for Bits and Burs, Portable Disc Sanders220504611A119000000
    3"ClothIron, Nickel, Stainless Steel, Steel, TitaniumGrinders for Bits and Burs, Portable Disc Sanders220104611A12900000
    4"ClothIron, Nickel, Stainless Steel, Steel, TitaniumGrinders for Bits and Burs, Portable Disc Sanders220104611A13900000
     
    back to top