McMaster-Carr logo
    Filter by
    Roller Chain Trade Number
    System of Measurement
    Bore Type
    Industrial Info Compare
    Shaft Type
    Chain Type
    Strand Type
    Bearing Type
    Chain Standard
    Sprocket Type
    Keyway Width
    Attribute Image
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Keyway Depth
    Attribute Image
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    59 Products

    Sprockets

    Image of Product. Finished Bore. Front orientation. Drive Sprockets. Sprockets, For Single Strand, Finished Bore.

    Finished Bore

    Image of Product. Plain Bore. Front orientation. Drive Sprockets. Sprockets, For Single Strand, Plain Bore.

    Plain Bore

    Sprocket teeth mesh with your roller chain to smoothly transmit power. These U.S.-made sprockets have machined teeth for a more precise fit than flame-cut or punched teeth, allowing them to glide in and out of the chain to reduce wear and extend chain life.
    Steel—Steel is strong, but best for dry environments since moisture will cause it to rust.
    Wear-Resistant Steel with Hardened Teeth—These sprockets have teeth that are hardened from the tip to the base so they withstand chain contact and wear evenly. That means fewer broken teeth and a longer lifespan than sprockets with unhardened or tip-hardened teeth. Steel is best for dry environments since moisture will cause it to rust.
    Corrosion-Resistant 18-8 Stainless Steel—Won't corrode from frequent washdowns and mild chemicals, including ammonia often found in cleaning solutions.
    Finished Bore—Mount these sprockets onto your shaft and secure with a set screw—no machining required.
    Plain Bore—Plain bore sprockets give you options—machine a custom bore, weld, or press-fit them in place. They're sized to the minimum shaft diameter listed and are machinable up to the maximum.
    For
    Roller Chain
    Keyway
    Trade
    No.
    Std.
    Pitch
    No. of
    Teeth
    OD
    Bore
    Type
    For Shaft
    Dia.
    Wd.
    Dp.
    Each
    For Single Strand
     
    Steel
    25ANSI1/4"111"Finished
    3/8"3/32"3/64"2737T4010000000
    25ANSI1/4"121 1/16"Finished
    3/8"2737T10200000
    25ANSI1/4"131 3/16"Finished
    3/8"2737T10400000
    25ANSI1/4"141 1/4"Finished
    3/8"2737T10600000
    25ANSI1/4"151 5/16"Finished
    3/8"2737T10900000
    25ANSI1/4"161 7/16"Finished
    3/8"2737T11300000
    25ANSI1/4"171 1/2"Finished
    3/8"2737T11600000
    25ANSI1/4"181 9/16"Finished
    3/8"2737T12100000
    25ANSI1/4"191 5/8"Finished
    3/8"2737T12600000
    25ANSI1/4"201 3/4"Finished
    3/8"2737T13200000
    25ANSI1/4"211 13/16"Finished
    3/8"2737T13800000
    25ANSI1/4"221 7/8"Finished
    3/8"2737T14500000
    25ANSI1/4"232"Finished
    3/8"2737T15200000
    25ANSI1/4"242 1/16"Finished
    3/8"2737T17100000
    25ANSI1/4"242 1/16"Plain
    3/8" to 1"6793K1700000
    25ANSI1/4"252 1/8"Finished
    3/8"2737T18100000
    25ANSI1/4"252 1/8"Plain
    3/8" to 1"6793K1800000
    25ANSI1/4"262 3/16"Finished
    3/8"2737T19100000
    25ANSI1/4"282 3/8"Finished
    3/8"2737T21100000
    25ANSI1/4"302 1/2"Finished
    3/8"2737T22100000
    25ANSI1/4"302 1/2"Plain
    3/8" to 1"6793K1900000
    25ANSI1/4"322 11/16"Finished
    3/8"2737T23100000
    25ANSI1/4"363"Finished
    3/8"2737T26100000
    35ANSI3/8"91 1/4"Finished
    3/8"6280K31100000
    35ANSI3/8"91 1/4"Plain
    3/8"6793K11600000
    35ANSI3/8"101 3/8"Finished
    3/8"6280K32100000
    35ANSI3/8"101 3/8"Plain
    3/8" to 9/16"6793K11700000
    35ANSI3/8"111 1/2"Finished
    3/8"6280K33100000
    35ANSI3/8"111 1/2"Plain
    3/8" to 9/16"6793K11800000
    41ANSI1/2"61 3/16"Finished
    3/8"2737T9100000
    41ANSI1/2"71 5/16"Finished
    3/8"2737T9200000
     
    Wear-Resistant Steel with Hardened Teeth
    35ANSI3/8"91 1/4"Finished
    3/8"2500T1100000
    35ANSI3/8"101 3/8"Finished
    3/8"2500T12100000
    35ANSI3/8"111 1/2"Finished
    3/8"2500T13100000
     
    Corrosion-Resistant 18-8 Stainless Steel
    25ANSI1/4"242 1/16"Plain
    3/8" to 1"6799K1400000
    35ANSI3/8"91 1/4"Finished
    3/8"3/32"3/64"2345K111000000
    35ANSI3/8"101 3/8"Finished
    3/8"3/32"3/64"2345K121000000
    35ANSI3/8"101 3/8"Plain
    3/8" to 9/16"6799K11200000
    35ANSI3/8"111 1/2"Finished
    3/8"3/32"3/64"2345K131000000
    35ANSI3/8"121 5/8"Finished
    3/8"3/32"3/64"2345K141000000
    35ANSI3/8"131 3/4"Finished
    3/8"3/32"3/64"2345K151000000
     

    Idler Sprockets

    Maintain constant tension on your roller chain to reduce wear and vibration. These sprockets press against the chain to take up slack and rotate freely on bearings to keep the chain moving smoothly. They’re often paired with roller chain tensioners.
    For Single Strand
    Image of Product. Front orientation. Idler Sprockets. For Single Strand, Ball Bearing.

    Ball Bearing

    Ball Bearing—Smoother than smooth—the balls inside these bearings roll nearly friction-free to handle high speeds. All are sealed to keep lubricant in and dust out.
    Steel—Steel is strong, but best for dry environments since moisture will cause it to rust.
    Wear-Resistant Steel with Hardened Teeth—These sprockets have teeth that are hardened from the tip to the base so they withstand chain contact and wear evenly. That means fewer broken teeth and a longer lifespan than sprockets with unhardened or tip-hardened teeth. Steel is best for dry environments since moisture will cause it to rust.
    For
    Roller Chain
    Trade
    No.
    Std.
    Pitch
    No. of
    Teeth
    For Shaft
    Dia.
    OD
    Bearing
    Material
    Each
    Ball Bearing
     
    Steel
    25ANSI1/4"203/8"1 3/4"Steel6663K11000000
    35ANSI3/8"193/8"2 1/2"Steel6663K2100000
     
    Wear-Resistant Steel with Hardened Teeth
    25ANSI1/4"203/8"1 3/4"Steel6663K19100000
    35ANSI3/8"193/8"2 1/2"Steel6663K19200000
     

    Plastic Sprockets

    Image of Product. Front orientation. Drive Sprockets. Plastic Sprockets.
    Quiet-running, lightweight, and naturally rust resistant. Choose these sprockets for noise-sensitive areas, designs with weight constraints, and machines that require frequent washdowns. Their teeth mesh with your roller chain to smoothly transmit power. All are made in the U.S.
    Plain Bore—Plain bore sprockets give you options—machine a custom bore, weld, or press-fit them in place. They're sized to the minimum shaft diameter listed and are machinable up to the maximum.
    For
    Roller Chain
    Trade
    No.
    Std.
    Pitch
    No. of
    Teeth
    OD
    Bore
    Type
    For Shaft
    Dia.
    Each
    For Single Strand
    0.1227"207/8"Plain
    3/8"64205K78400000
    0.1227"321 5/16"Plain
    3/8"64205K160000
    25ANSI1/4"181 9/16"Plain
    3/8" to 1/2"60425K18100000
    25ANSI1/4"242 1/16"Plain
    3/8" to 13/16"60425K17500000
    35ANSI3/8"101 3/8"Plain
    3/8" to 7/16"60425K17200000
    35ANSI3/8"111 1/2"Plain
    3/8" to 1/2"60425K17100000
     

    Split-Tapered Bushings

    Image of Product. Front orientation. Contains Annotated. Pulley and Sprocket Bushings. Split-Tapered Bushings, Steel.

    Steel

    The tapered barrel on these bushings is split on both sides, allowing them to contract more tightly around the shaft than quick-disconnect and taper-lock bushings. They're for use with split-tapered sprockets and pulleys of the same bushing trade number. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.
    For Shaft
    Dia.
    Overall
    Wd.
    Taper
    Fastener Tightening
    Torque, in·lbf
    Each
    Steel
     
    Bushing Trade Number G with Clamping Screws
    3/8"1"959859T111000000
     
    Bushing Trade Number H with Clamping Screws
    3/8"1 1/4"956086K19100000
     

    Flanged Screw-Clamp Bushings

    Image of Product. Front orientation. Pulley and Sprocket Bushings. Flanged Screw-Clamp Bushings.
    Image of Attribute. Side1 orientation. Contains Annotated. Flanged Screw-Clamp Bushings.
    A mounting flange prevents movement during tightening. These bushings are good for shock loads. When you tighten the included screws, the bushing's inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear. They can be mounted on shafts with or without keyways.
    For Shaft
    Dia.
    OD
    Overall
    Wd.
    Max. Torque,
    in·lbf
    Fastener Tightening
    Torque, in·lbf
    Includes
    Each
    Steel
    3/8"15/16"13/16"26042Clamping Screws1058K11000000
     

    Light Duty Sleeve Bushings

    Image of Product. Front orientation. Pulley and Sprocket Bushings. Light Duty Sleeve Bushings.
    Reduce the ID of sprockets, pulleys, and gears in low-torque applications. Bushings have a hole for a set screw.
    For Shaft
    Dia.
    OD
    Overall
    Wd.
    Set Screw
    Hole Dia.
    Each
    Steel
    3/8"1/2"1 1/8"3/8"6420K1400000
     

    Corrosion-Resistant Flanged Screw-Clamp Bushings

    Image of Product. Back orientation. Pulley and Sprocket Bushings. Corrosion-Resistant Flanged Screw-Clamp Bushings.
    Image of Attribute. Side1 orientation. Contains Annotated. Corrosion-Resistant Flanged Screw-Clamp Bushings.
    Made from stainless steel or plated with nickel, these bushings resist corrosion. A mounting flange prevents movement during tightening. As screw-clamp bushings, they're good for shock loads. When you tighten the clamping screws, the bushing's inner sleeve tightens onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear.
    Nickel-Plated Steel—Nickel-plated steel bushings have good corrosion resistance in wet environments. However, the plating may begin to flake with long-term use.
    Stainless Steel—Stainless steel bushings have excellent corrosion resistance and can withstand prolonged exposure to moisture.
    For Shaft
    Dia.
    OD
    Overall
    Wd.
    Max. Torque,
    in·lbf
    Fastener Tightening
    Torque, in·lbf
    Includes
    Each
    Nickel-Plated Steel
    3/8"1 1/4"1 1/8"25030Clamping Screws5530N120000000
     
    Stainless Steel
    3/8"1 1/4"1 1/8"19030Clamping Screws5530N102000000
     

    Hex Flanged Eccentric Bushings

    Image of Product. Front orientation. Pulley and Sprocket Bushings. Hex Flanged Eccentric Bushings.
    Image of Attribute. Front orientation. Contains Annotated. Hex Flanged Eccentric Bushings.
    Often used with V-groove wheels or track roller carriages, these off-center bushings create precise mounting clearance. As you turn the bushing’s hex flange with a wrench, it adjusts the distance between the V-groove wheel or carriage and the rail. Tighten the axle bolt in place once you’ve adjusted them. Made of 303 stainless steel, these bushings have very good corrosion resistance.
    For Hole
    Dia.
    Overall
    Wd.
    Flange
    Ht.
    Hex
    Size
    Each
    303 Stainless Steel
    0.591"1 11/64"7/16"7/8"7744N104000000
     

    Quick-Grip Screw-Clamp Bushings

    Image of Product. Front orientation. Pulley and Sprocket Bushings. Quick-Grip Screw-Clamp Bushings.
    Also known as Trantorque bushings, these tighten with a twist of the collar nut—no screws needed. As you tighten the collar nut, the inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear.
    For Shaft
    Dia.
    OD
    Overall
    Wd.
    Max. Torque,
    in·lbf
    Each
    Steel
    3/8"3/4"7/8"4805926K14000000
     
    back to top