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    81 Products

    Sprockets

    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.
    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,
    mm
    No. of
    Teeth
    OD,
    mm
    Bore
    Type
    For Shaft
    Dia.
    Each
    For Single Strand
     
    Steel
    04BISO6818Plain
    		5 mm to 7 mm2302K67000000
    04BISO6920Plain
    		5 mm to 7 mm2302K6800000
     

    Metal Spur Gears

    Our strongest spur gears for transferring motion. They’re better than plastic gears for high-load, high-speed, and heavy duty applications. Combine a gear and rack to convert rotary motion into linear motion. To minimize your footprint, mount one or more standard gears inside of an internal gear.
    Combine gears with different numbers of teeth to change speed and torque in your assembly. For components to mesh correctly, they must have the same pressure angle and pitch/module.
    Gears
    Image of Product. Front orientation. Spur Gears. Metal Spur Gears, 20° Pressure Angle, Round Bore.
    Image of Product. Gear with Round Bore and Set Screw. Back orientation. Spur Gears. Metal Spur Gears, 20° Pressure Angle, Round Bore with Set Screw.
    Image of Product. Front orientation. Spur Gears. Metal Spur Gears, 20° Pressure Angle, Clamping Bore with Clamping Screw.

    20° Pressure Angle

    Round Bore

    Gear with Round

    Bore and Set Screw

    20° Pressure

    Angle, Clamping

    Bore with

    Clamping Screw

    20° Pressure Angle—The current industry standard, these 20° pressure angle spur gears have thicker, stronger teeth than 14½° pressure angle gears.
    Steel—Steel gears have hard, strong, and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals.
    Stainless Steel—Stainless steel gears resist rust in damp and wet environments, so they're commonly used in food-processing plants and other areas with frequent cleaning.
    Brass—Brass gears are easy to machine, so you can add your own mounting holes and make other alterations. They won't rust when exposed to water.
    Clamping Bore—Gears with a clamping bore have a built-in clamp that securely grips shafts without marring them. Use the included clamping screw to tighten or loosen the grip.
    Hub,
    mm
    Gear
    Module
    No. of
    Teeth
    Gear Pitch
    Dia., mm
    OD,
    mm
    Face Wd.,
    mm
    Dia.
    Wd.
    Bore Type
    For Shaft
    Dia., mm
    Tooth Heat
    Treatment
    Material
    Each
    20° Pressure Angle
     
    Steel
    0.5
    		24121351311Round Bore with Set Screw5Not HardenedBlack-Oxide 1045 Carbon Steel2664N316000000
    0.5
    		3618195167Round Bore with Set Screw5Not HardenedBlack-Oxide 1045 Carbon Steel2664N32100000
    0.5
    		4522.523.55207Round Bore with Set Screw5Not HardenedBlack-Oxide 1045 Carbon Steel2664N32400000
    0.5
    		5025265227Round Bore with Set Screw5Not HardenedBlack-Oxide 1045 Carbon Steel2664N32500000
    0.5
    		5527.5285257Round Bore with Set Screw5Not HardenedBlack-Oxide 1045 Carbon Steel2664N32700000
    0.8
    		1612.814.4814.414Round Bore with Set Screw5Not HardenedBlack-Oxide 1045 Carbon Steel2664N33400000
    0.8
    		201617.68138Round Bore with Set Screw5Not HardenedBlack-Oxide 1045 Carbon Steel2664N33500000
    0.8
    		2419.220.88168Round Bore with Set Screw5Not HardenedBlack-Oxide 1045 Carbon Steel2664N33600000
    0.8
    		252021.68168Round Bore with Set Screw5Not HardenedBlack-Oxide 1045 Carbon Steel2664N33700000
    1
    		161618101820Round Bore with Set Screw5Not HardenedBlack-Oxide 1045 Carbon Steel2664N35100000
    1
    		202022101610Round Bore with Set Screw5Not HardenedBlack-Oxide 1045 Carbon Steel2664N35300000
     
    Stainless Steel
    0.5
    		241213.57148Clamping Bore with Clamping Screw5Not Hardened303 Stainless Steel3757N1600000
     
    Brass
    0.8
    		201617.64138Round Bore
    		5—Brass2664N44100000
    0.8
    		2116.818.44148Round Bore with Set Screw5—Brass2664N44200000
    0.8
    		2318.4204158Round Bore with Set Screw5—Brass2664N44300000
    0.8
    		2419.220.84168Round Bore with Set Screw5—Brass2664N44500000
    0.8
    		2620.822.44188Round Bore with Set Screw5—Brass2664N44900000
    0.8
    		3225.627.24228Round Bore with Set Screw5—Brass2664N45700000
    0.8
    		3628.830.44258Round Bore with Set Screw5—Brass2664N46100000
    0.8
    		403233.64288Round Bore with Set Screw5—Brass2664N46400000
    0.8
    		604849.64288Round Bore with Set Screw5—Brass2664N46700000
    1
    		1616186128Round Bore with Set Screw5—Brass2664N46800000
    1
    		3030326258Round Bore with Set Screw5—Brass2664N48500000
    1
    		3232346288Round Bore with Set Screw5—Brass2664N48800000
     
    Gear Racks
    Image of Product. Front orientation. Spur Gear Racks. Metal Spur Gears, 20° Pressure Angle—Rectangular.
    Image of Product. Front orientation. Spur Gear Racks. Metal Spur Gears, 20° Pressure Angle—Round.

    20° Pressure Angle—Rectangular

    20° Pressure Angle—Round

    These racks match with spur gears to convert rotary motion to linear motion. For components to mesh correctly, they must have the same pressure angle and pitch/module.
    Steel—Steel gear racks have strong and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals.
    Brass—Brass gear racks are easy to machine, so you can add your own mounting holes and make other alterations. They won't rust when exposed to water.
    Gear
    Module
    Lg.,
    mm
    Pitch Ht.,
    mm
    Ht.,
    mm
    Face Wd.,
    mm
    Dia.,
    mm
    Tooth Heat
    Treatment
    Material
    Features
    Each
    20° Pressure Angle—Rectangular
     
    Steel
    0.5
    		10011.5125—Not HardenedBlack-Oxide 1045 Carbon Steel—2485N242000000
    0.5
    		30011.5125—Not HardenedBlack-Oxide 1045 Carbon SteelMachined Ends2485N24100000
    0.8
    		10011.512.38—Not HardenedBlack-Oxide 1045 Carbon Steel—2485N21400000
    1
    		100111210—Not HardenedBlack-Oxide 1045 Carbon Steel—2485N21700000
    1
    		300111210—Not HardenedBlack-Oxide 1045 Carbon Steel—2485N21800000
    1
    		5008.89.810—Not Hardened1045 Carbon Steel—2485N20100000
    1
    		1,0008.89.810—Not Hardened1045 Carbon Steel—2485N202000000
     
    Brass
    0.8
    		3009.2104——Brass—2485N23600000
    1
    		3009106——Brass—2485N23700000
     
    20° Pressure Angle—Round
     
    Steel
    1
    		5009——10Not HardenedBlack-Oxide 1045 Carbon Steel—2485N226000000
     
    Internal Gears
    Image of Product. Front orientation. Internal Spur Gears. Metal Spur Gears.
    Save space without losing power. Insert a standard spur gear inside one of these gears for a compact assembly that smoothly transmits motion. Combine gears with different numbers of teeth to change speed and torque in your assembly. For components to mesh correctly, they must have the same pressure angle and pitch/module.
    Steel—Steel gears have strong and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals.
    Gear
    Module
    No. of
    Teeth
    Gear Pitch
    Dia., mm
    OD,
    mm
    ID,
    mm
    Face Wd.,
    mm
    Tooth Heat
    Treatment
    Finished Material
    Each
    20° Pressure Angle
     
    Steel
    0.5
    		603050295Not HardenedBlack-Oxide 1045 Carbon Steel2696N16000000
    0.5
    		1005070495Not HardenedBlack-Oxide 1045 Carbon Steel2696N1500000
    1
    		6060905810Not HardenedBlack-Oxide 1045 Carbon Steel2696N2700000
    1
    		1001001309810Not HardenedBlack-Oxide 1045 Carbon Steel2696N26000000
     

    Metal Worms and Worm Gears

    Image of System. Worm and Gear Sold Separately. Front orientation. Worm Gears. Metal Worms and Worm Gears.

    Worm and

    Gear Sold

    Separately

    Worm gears use screw threads to make large reductions to shaft speed while transmitting motion at a right angle. They transmit motion from worm to gear and cannot be reversed. For gears and worms to mesh correctly, they must have the same pressure angle, pitch/module, number of thread starts, and thread direction. These worms are compatible with plastic worm gears.
    Worms
    Image of Product. Front orientation. Worm Gears. Metal Worms and Worm Gears, Worms, Round Bore.

    Round Bore

    303 Stainless Steel—303 stainless steel worms won’t rust in wet environments, so they’re commonly used in food-processing plants and other areas with frequent cleaning.
    Black-Oxide 1045 Carbon Steel—Black-Oxide 1045 carbon steel worms have rolled threads.
    Gear
    Module
    Pressure
    Angle
    Worm Lg.,
    mm
    Gear Pitch
    Dia., mm
    OD,
    mm
    For Shaft
    Dia., mm
    No. of Thread
    Starts
    Thread
    Direction
    Tooth Heat
    Treatment
    Tooth Mechanical
    Finish
    Set Screw
    Included
    Each
    Round Bore—Black-Oxide 1045 Carbon Steel
    0.5
    		20°18111251Right Hand
    		Not HardenedUnfinishedYes57545K624000000
    0.5
    		20°18111252Right Hand
    		Not HardenedUnfinishedYes57545K62500000
     
    Round Bore—303 Stainless Steel
    0.5
    		20°18111251Right Hand
    		Not HardenedUnfinishedYes57545K65300000
    0.5
    		20°18111252Right Hand
    		Not HardenedUnfinishedYes57545K65400000
     
    Gears
    Image of Product. Front orientation. Worm Gears. Metal Worms and Worm Gears, Gears.
    Image of Attribute. Front orientation. Contains Annotated. Worm Gears. Metal Worms and Worm Gears, Gears.
    Image of Attribute. Front orientation. Contains Annotated. Worm Gears. Metal Worms and Worm Gears, Gears.
    Bronze—Bronze gears have low friction and dissipate heat better than cast iron gears to provide a long service life for both the gear and the worm. They’re also more corrosion resistant than cast iron gears.
    Speed Ratio—Speed ratio is the ratio by which output shaft speed is reduced. As speed decreases, torque increases.
    Hub
    Gear
    Module
    Speed
    Ratio
    No. of
    Teeth
    Pressure
    Angle
    Gear Pitch
    Dia., mm
    For No. of
    Thread Starts
    OD,
    mm
    Face Wd.,
    mm
    Overall
    Wd., mm
    For Shaft
    Dia., mm
    Dia.,
    mm
    Wd.,
    mm
    Material
    For Thread
    Direction
    Tooth Heat
    Treatment
    Tooth Mechanical
    Finish
    Each
    Round Bore—Bronze
    0.5
    		40:14020°201215125157BronzeRight Hand
    		Not HardenedUnfinished57545K738000000
    0.5
    		50:15020°251265125207BronzeRight Hand
    		Not HardenedUnfinished57545K73900000
    0.5
    		60:16020°301315125257BronzeRight Hand
    		Not HardenedUnfinished57545K74100000
    0.8
    		10:12020°16217.69185129BronzeRight Hand
    		Not HardenedUnfinished57545K74300000
    0.8
    		20:12020°16117.69185129BronzeRight Hand
    		Not HardenedUnfinished57545K74200000
    0.8
    		30:13020°24125.69185189BronzeRight Hand
    		Not HardenedUnfinished57545K74400000
     

    GT Timing Belt Idler Pulleys

    Image of Product. Front orientation. Timing Belt Idler Pulleys. GT Timing Belt Idler Pulleys, Toothed.

    Toothed

    Image of Attribute. Front orientation. Contains Annotated, Border. GT Timing Belt Idler Pulleys.
    Get pitch-perfect compatibility with these free-spinning pulleys. They mesh with belts that have curved GT-profile teeth, reducing vibration and wear. As they rotate on their bearings, these pulleys press up against belts to reduce slack and keep the system moving smoothly. All are compatible with GatesPowerGrip GT, 2GT, GT2, GT3, and GT4 series. Idler pulleys are often used with belt tensioners.
    Corrosion-Resistant Aluminum—Lightweight and resist rust in wet environments. Although aluminum pulleys are one-third the weight of iron pulleys, they aren't as strong.
    Toothed
    For Max.
    Belt Wd., mm
    Pitch,
    mm
    For Shaft
    Dia., mm
    OD,
    mm
    Bearing
    Type
    No. of
    Teeth
    Each
    For 2MGT Trade Size
     
    Corrosion-Resistant Aluminum
    62515Ball
    		203693N1100000
    92515Ball
    		203693N120000
    122515Ball
    		203693N130000
     

    Precision High-Torque GT Timing Belt Pulleys

    Image of Product. Front orientation. Timing Belt Drive Pulleys. Precision High-Torque GT Timing Belt Pulleys, Finished Bore.

    Finished Bore

    Image of Attribute. Front orientation. Contains Annotated, Border. Modified Curved (GT) Teeth.
    When precise synchronization is crucial, these pulleys minimize play (backlash). They’re often found in 3D printers, where accurate positioning is essential. Their curved teeth fit snugly with matching belts. Compared to pulleys with standard trapezoidal teeth, these pulleys transmit about three times more torque and run at higher speeds. All are compatible with Gates PowerGrip GT, 2GT, GT2, GT3, and GT4 series.
    Corrosion-Resistant Aluminum—Won't rust in wet environments and one-third the weight of steel and iron. However, aluminum pulleys are not as strong as iron and steel.
    Finished Bore—Mount these pulleys onto the shaft and secure with a set screw—no machining required.
    For Max.
    Belt Wd., mm
    Pitch,
    mm
    No. of
    Teeth
    Bore
    Type
    For Shaft
    Dia., mm
    Pitch Dia.,
    mm
    No. of
    Flanges
    Hub
    Type
    Each
    For 2MGT Trade Size
     
    Corrosion-Resistant Aluminum
    6216Finished
    		59.71Standard3684N1100000
    6220Finished
    		512.21Standard3684N120000
    9220Finished
    		512.21Standard3684N130000
    12220Finished
    		512.21Standard3684N140000
     

    Plastic Worm Gears

    These plastic gears are lighter and quieter than metal gears—pair them with metal worms for lubrication-free operation. Worm gears use screw threads to make large reductions to shaft speed while transmitting motion at a right angle. They transmit motion from worm to gear and cannot be reversed. For gears and worms to mesh correctly, they must have the same pressure angle, pitch/module, number of thread starts, and thread direction.
    Gears
    Image of Product. Front orientation. Worm Gears. Plastic Worm Gears.
    Image of Attribute. Front orientation. Contains Annotated. Worm Gears. Plastic Worm Gears.
    Image of Attribute. Front orientation. Contains Annotated. Worm Gears. Plastic Worm Gears.
    Acetal—Acetal gears are lightweight, and resist corrosion and chemicals. They absorb less moisture than nylon gears, so they’re less prone to dimensional changes. They’re best suited for light duty applications, such as prototyping.
    Speed Ratio—Speed ratio is the ratio by which output shaft speed is reduced. As speed decreases, torque increases.
    Hub,
    mm
    Gear
    Module
    Speed
    Ratio
    No. of
    Teeth
    Pressure
    Angle
    Gear Pitch
    Dia., mm
    For No. of
    Thread Starts
    OD,
    mm
    Face Wd.,
    mm
    Overall
    Wd., mm
    For Shaft
    Dia., mm
    Fabrication
    Color
    Dia.
    Wd.
    For Thread
    Direction
    Each
    Round Bore—Acetal
    0.5
    		40:14020°201215125MoldedWhite157Right Hand
    		4037N115000000
    0.5
    		50:15020°251265125MoldedWhite207Right Hand
    		4037N11600000
    0.5
    		60:16020°301315125MoldedWhite257Right Hand
    		4037N11700000
    0.8
    		10:12020°16217.69185MoldedWhite129Right Hand
    		4037N11900000
     

    Plastic Spur Gears

    Made of plastic, these spur gears run more quietly than metal gears and have good corrosion and chemical resistance. However, they’re not as strong as metal gears, so they’re best for light duty applications. Combine a gear and rack to convert rotary motion into linear motion.
    Combine gears with different numbers of teeth to change speed and torque in your assembly. For components to mesh correctly, they must have the same pressure angle and pitch/module.
    Gears
    Image of Product. Front orientation. Spur Gears. Plastic Spur Gears, 20° Pressure Angle.

    20° Pressure

    Angle

    20° Pressure Angle—The current industry standard, these 20° pressure angle spur gears have thicker, stronger teeth than 14½° pressure angle gears.
    Acetal—Acetal gears absorb less water than nylon gears, so they’re less likely to swell.
    Hub,
    mm
    Gear
    Module
    No. of
    Teeth
    Gear Pitch
    Dia., mm
    OD,
    mm
    Face Wd.,
    mm
    Dia.
    Wd.
    Bore Type
    For Shaft
    Dia., mm
    Color
    Each
    20° Pressure Angle
     
    Acetal
    0.5
    		3015163104Round Bore
    		5White2662N31400000
    0.5
    		3618193104Round Bore
    		5White2662N290000
    0.5
    		4020213124Round Bore
    		5White2662N3150000
    0.5
    		4522.523.53124Round Bore
    		5White2662N3160000
    0.5
    		4824253124Round Bore
    		5White2662N310000
    0.5
    		5025263124Round Bore
    		5White2662N3170000
    0.8
    		201617.64105Round Bore
    		5White2662N330000
    0.8
    		2419.220.84105Round Bore
    		5White2662N3250000
    1
    		1616186106Round Bore
    		5White2662N3330000
    1
    		1818206106Round Bore
    		5White2662N3340000
    1
    		202022611.76Round Bore
    		5White2662N390000
    1
    		242426611.76Round Bore
    		5White2662N3350000
    1
    		282830611.76Round Bore
    		5White2662N3370000
     
    Gear Racks
    Image of Product. Front orientation. Spur Gear Racks. Plastic Spur Gears, 20° Pressure Angle—Rectangular.

    20° Pressure Angle—Rectangular

    These racks match with spur gears to convert rotary motion to linear motion. For components to mesh correctly, they must have the same pressure angle and pitch/module.
    Acetal—Acetal gear racks absorb less water than nylon racks, so they’re less likely to swell.
    Machined—Machined gear racks may be slightly bowed but will straighten out when installed.
    Gear
    Module
    Lg.,
    mm
    Pitch Ht.,
    mm
    Ht.,
    mm
    Face Wd.,
    mm
    Fabrication
    Color
    Each
    20° Pressure Angle—Rectangular
     
    Acetal
    0.5
    		2505.96.34MoldedGray2662N5500000
    0.8
    		2506.47.35MoldedGray2662N560000
    1
    		3157.91010MoldedGray2662N570000
    1
    		500111210MachinedWhite2662N63000000
     

    Metal Ratchet Gears and Pawls

    Image of System. Gears and Pawls (Sold Separately). Front orientation. Ratchet Gears and Pawls. Metal Ratchet Gears and Pawls.

    Gears and

    Pawls (Sold

    Separately)

    Pawls
    Image of Attribute. Front orientation. Contains Annotated.
    Pawls are required to prevent backward motion.
    For Face
    Wd., mm
    For Shaft
    Dia., mm
    Overall
    Lg., mm
    Material
    Ctr.-to-End
    Lg., mm
    Each
    Round Bore
    65381045 Carbon Steel
    		306283K72000000
     

    Plastic Miter Gears

    Image of System. Gears Sold Separately. Front orientation. Miter Gears. Plastic Miter Gears.
    Image of Attribute. Front orientation. Contains Annotated. Plastic Miter Gears.
    Image of Attribute. Front orientation. Contains Annotated.

    Gears Sold Separately

    Connect two shafts at a right angle without changing shaft speed or torque. Made of plastic, these gears run quieter than metal gears and have good corrosion and chemical resistance.
    For two gears to mesh correctly, they must have the same pressure angle, pitch/module, and number of teeth.
    Acetal—Acetal gears absorb less moisture than nylon gears and are less prone to dimensional change. They’re best suited for use in light duty applications such as prototyping.
    Hub,
    mm
    Gear
    Module
    No. of
    Teeth
    Pressure
    Angle
    Gear Pitch
    Dia., mm
    OD,
    mm
    Face Wd.,
    mm
    Overall
    Wd., mm
    For Shaft
    Dia., mm
    Mounting Distance,
    mm
    Material
    Fabrication
    Color
    Dia.
    Wd.
    Each
    Round Bore
    0.8
    		2020°1617.13.510.8516Acetal
    		MoldedWhite1252810N200000
     

    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., mm
    OD,
    mm
    Overall
    Wd., mm
    Max. Torque,
    in·lbf
    Each
    Steel
    516191502298K1000000
     
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