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    12 Products
    About Gears
    industrial info icon

    Compare gear types, measure pitch and module, calculate mounting distance, increase speed or torque, and more.

    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)

    Gears
    Image of Attribute. Front orientation. Contains Annotated.
    Compared to nylon gears, these metal ratchet gears are better for high-load, high-speed, and heavy duty applications. Used to prevent unwanted motion in jacks, tie downs, clutches, and winches, ratchet gears have sloped teeth that allow motion in one direction and prevent it in the other.
    Not Hardened— Gears with teeth that are not hardened can be hardened to fit your application. Hardening a gear’s teeth increases its wear resistance.
    Face
    Wd.
    No. of
    Teeth
    OD
    For Shaft
    Dia.
    Mounting
    Distance
    Material
    Tooth Heat
    Treatment
    Each
    Round Bore
    3/8"644"11/16"2.5"303 Stainless Steel
    		Not Hardened6283K110000000
     

    Metal Bevel Gears

    Image of System. Gears Sold Separately. Front orientation. Bevel Gears. Metal Bevel Gears.

    Gears Sold

    Separately

    Image of Product. Front orientation. Bevel Gears. Metal Bevel Gears, Large Gears.

    Large Gears

    Bevel gears provide right-angle speed reduction. They're a type of miter gear installed so that one gear is smaller than the other to achieve speed ratios ranging from 3:2 to 5:1. All are made of carbon steel for good strength.
    A complete set consists of a large gear and a small gear, also known as a pinion (sold separately). For the gears to mesh correctly, they must have the same face width, pitch or module, and pressure angle.
    Speed Ratio—The ratio by which shaft speed is reduced when transferring motion from the smaller to the larger gear. To increase shaft speed, transfer motion from the larger to the smaller gear. Changing shaft speed also changes torque: as speed decreases, torque increases. To achieve the speed ratio listed, match it across a set of compatible gears.
    Large Gears
    Face
    Wd.
    Gear
    Pitch
    Pressure
    Angle
    Speed
    Ratio
    Material
    For Shaft
    Dia.
    Each
    0.48"16
    		20°4:11144 Carbon Steel
    		5/8"2515N170000000

    Metal Internal Spur Gears

    Image of Product. Front orientation. Internal Spur Gears. Metal Internal 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. These gears have teeth with a 20° pressure angle, the current industry standard. 20° pressure angle gears have thicker, stronger teeth than 14½° pressure angle gears.
    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.
    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.
    Gear
    Pitch
    No. of
    Teeth
    Gear Pitch
    Dia.
    OD
    ID
    Face
    Wd.
    Material
    Each
    20° Pressure Angle
     
    Brass
    32
    		642"2.75"1.961"3/16"Brass2696N50000000
     

    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. 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.

    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.
    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.
    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
    Gear
    Pitch
    Gear
    Module
    No. of
    Teeth
    Gear Pitch
    Dia.
    OD
    Face
    Wd.
    Dia.
    Wd.
    Bore Type
    For Shaft
    Dia.
    Tooth Heat
    Treatment
    Material
    Each
    20° Pressure Angle
     
    Stainless Steel
    32
    		—642"2.06"3/16"0.5"0.25"Round Bore with Set Screw1/4"Not Hardened303 Stainless Steel6832K57000000
    —1
    		6464 mm66 mm6 mm24 mm14 mmClamping Bore with Clamping Screw10 mmNot Hardened303 Stainless Steel3757N54000000
     
    Gear Racks
    Image of Product. Front orientation. Spur Gear Racks. Metal 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.
    Stainless Steel—Stainless steel gear racks resist rust in damp and wet environments, so they're commonly used in food-processing plants and other areas with frequent cleaning.
    Hardened—Gear racks with hardened teeth have better wear resistance than racks with teeth that are not hardened.
    Gear
    Pitch
    Gear
    Module
    Lg.
    Pitch
    Ht.
    Ht.
    Face
    Wd.
    Tooth Heat
    Treatment
    Material
    Each
    20° Pressure Angle—Rectangular
     
    Stainless Steel
    32
    		—18"0.449"1/2"1/4"Not Hardened416 Stainless Steel6832K750000000
    —1
    		500 mm11 mm12 mm10 mmHardened304 Stainless Steel2485N232000000
     

    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.
    Image of Product. Front orientation. Spur Gears. Plastic Spur Gears, 14 1/2° Pressure Angle, Round Bore.

    20° Pressure

    Angle

    14 1/2° Pressure

    Angle, Round Bore

    20° Pressure Angle—The current industry standard, these 20° pressure angle spur gears have thicker, stronger teeth than 14½° pressure angle gears.
    14 1/2° Pressure Angle—A former industry standard, 14½° pressure angle gears are often found in older machinery.
    Acetal—Acetal gears absorb less water than nylon gears, so they’re less likely to swell.
    Nylon—Nylon gears are wear resistant, but will swell and weaken over time when wet.
    Hub
    Gear
    Pitch
    Gear
    Module
    No. of
    Teeth
    Gear Pitch
    Dia.
    OD
    Face
    Wd.
    Dia.
    Wd.
    Bore Type
    For Shaft
    Dia.
    Color
    Each
    20° Pressure Angle
     
    Acetal
    —1
    		6464 mm66 mm6 mm18 mm8 mmRound Bore
    		8 mmWhite2662N346000000
     
    14 1/2° Pressure Angle
     
    Nylon
    48
    		—641.333"1.37"1/8"0.625"0.25"Round Bore
    		1/4"White57655K2700000
     
    Gear Racks
    Image of Product. Front orientation. Spur Gear Racks. Plastic Spur Gears, 20° Pressure Angle—Rectangular.

    20° Pressure Angle—Rectangular

    Image of Product. Front orientation. Spur Gear Racks. Plastic Spur Gears, 14 1/2° Pressure Angle—Rectangular.

    14 1/2° 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.
    Nylon—Nylon gear racks are wear resistant, but will swell and weaken over time when wet.
    Machined—Machined gear racks may be slightly bowed but will straighten out when installed.
    Gear
    Pitch
    Gear
    Module
    Lg.
    Pitch
    Ht.
    Ht.
    Face
    Wd.
    Fabrication
    Color
    Each
    20° Pressure Angle—Rectangular
     
    Acetal
    —1
    		315 mm7.9 mm10 mm10 mmMoldedGray2662N5700000
    —1
    		500 mm11 mm12 mm10 mmMachinedWhite2662N63000000
     
    14 1/2° Pressure Angle—Rectangular
     
    Nylon
    48
    		—1 ft.0.109"1/8"1/8"MoldedWhite57655K6100000
     
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