For Shaft Diameter For Shaft Diameter |
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Number of Teeth Number of Teeth | Show |
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Number of Teeth Number of Teeth | Hide |
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Material Material |
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OD OD |
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Bore Type Bore Type |
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Finished | Machinable |
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Round | Plain |
Overall Width Overall Width |
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Teeth Shape Teeth Shape |
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![]() | Trapezoidal |
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Pitch Diameter Pitch Diameter |
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Hub Diameter Hub Diameter |
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Shaft Mount Type Shaft Mount Type |
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For Roller Chain Strand Type For Roller Chain Strand Type |
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![]() | Single |
Sprocket Type Sprocket Type |
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More
More
Mount these sprockets onto your shaft and secure with a set screw—no machining necessary.
For technical drawings and 3-D models, click on a part number.
Keyway | ||||||||||
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Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Wd. | Dp. | Material | Includes | Each | |
44 | 3/4" | 7.29" | 1 1/8" | 3 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 000000 |
44 | 7/8" | 7.29" | 1 1/8" | 3 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
44 | 1" | 7.29" | 1 1/8" | 3 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
44 | 1 1/4" | 7.29" | 1 1/8" | 3 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
44 | 1 3/8" | 7.29" | 1 1/8" | 3 1/2" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 00000 |
44 | 1 1/2" | 7.29" | 1 1/8" | 3 1/2" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 00000 |
Designed to meet ISO 606 and DIN 8187 international dimensional standards, these sprockets are for use with compatible ISO and DIN roller chain. They come machined to the shaft diameter size listed and are machinable up to the maximum shaft diameter size.
For technical drawings and 3-D models, click on a part number.
Number of Teeth | For Shaft Dia., mm | For Max. Shaft Dia., mm | OD, mm | Overall Wd., mm | Hub Dia., mm | Material | Specifications Met | Each | |
For DIN, ISO 10B Roller Chain (15.88 mm Pitch) | |||||||||
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44 | 19 | 57 | 231.5 | 32 | 82 | Steel | DIN 8187, ISO 606 | 00000000 | 0000000 |
For DIN, ISO 12B Roller Chain (19.05 mm Pitch) | |||||||||
44 | 25 | 70 | 278.78 | 40 | 107 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
For DIN, ISO 16B Roller Chain (25.4 mm Pitch) | |||||||||
44 | 32 | 80 | 371.92 | 50 | 120 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
For DIN, ISO 20B Roller Chain (31.75 mm Pitch) | |||||||||
44 | 32 | 84 | 465.69 | 64 | 127 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
With metric teeth and slim profile, these sprockets allow your ISO roller chain to reach narrow spaces. They're commonly referred to as A-plate sprockets. Machine the unfinished bore to fit your shaft—sprockets come machined to the shaft diameter listed and are machinable up to the maximum shaft diameter size. Sprockets meet DIN 8187 and ISO 606, international standards for sprockets and roller chains.
For technical drawings and 3-D models, click on a part number.
Number of Teeth | For Shaft Dia., mm | For Max. Shaft Dia., mm | OD, mm | Overall Wd., mm | Material | Specifications Met | Each | |
For ISO 10B Roller Chain (15.875 mm Pitch) | ||||||||
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44 | 18 | 206 | 231.39 | 9 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
For ISO 12B Roller Chain (19.05 mm Pitch) | ||||||||
44 | 24 | 249 | 277.37 | 12 | Steel | DIN 8187, ISO 606 | 00000000 | 00000 |
For ISO 16B Roller Chain (25.4 mm Pitch) | ||||||||
44 | 32 | 332 | 370.33 | 17 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
For ISO 20B Roller Chain (31.75 mm Pitch) | ||||||||
44 | 32 | 416 | 463.04 | 19 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
Pulleys are anodized aluminum, which is more corrosion resistant than steel. They are XL series (extra light) and have trapezoidal teeth. Select a pulley with a maximum belt width that’s the same or larger than your timing belt width.
For technical drawings and 3-D models, click on a part number.
OD | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Outside Wd. | Overall Wd. | Pitch Dia. | Fabrication | Material | Hub Dia. | Each | |
For 3/8" Max. Belt Wd. | ||||||||||||
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With Hub | ||||||||||||
2.781" | 44 | 0.200" | 5/16" | Finished | 0.563" | 1" | 2.801" | Machined | Anodized Aluminum | 1.5" | 0000000 | 000000 |
OD, mm | Number of Teeth | Pitch, mm | For Shaft Dia., mm | Bore Type | Outside Wd., mm | Overall Wd., mm | Pitch Dia., mm | Fabrication | Material | Hub Dia., mm | Each | |
For 9.5 mm Max. Belt Wd. | ||||||||||||
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With Hub | ||||||||||||
70.6 | 44 | 5.080 | 10 | Finished | 14.3 | 25.4 | 71.1 | Machined | Anodized Aluminum | 38 | 00000000 | 000000 |
Acetal and aluminum construction makes these pulleys useful in weight-sensitive applications. All are XL series (extra light) and have trapezoidal teeth. Select a pulley with a maximum belt width that’s the same or larger than your timing belt width.
For technical drawings and 3-D models, click on a part number.
Hub | |||||||||||||||
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OD | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Number of Flanges | Fabrication | Material | Material | Dia. | Each | |
For 3/8" Max. Belt Wd. | |||||||||||||||
Inch | |||||||||||||||
3.03" | 44 | 0.200" | 5/16" | Finished | 0.5" | 0.625" | 0.875" | 2.801" | 2 | Molded | Acetal | Aluminum | 0.875" | 00000000 | 000000 |
Metric | |||||||||||||||
77mm | 44 | 5.000mm | 10mm | Finished | 13mm | 16mm | 22mm | 71.15mm | 2 | Molded | Acetal | Aluminum | 13mm | 0000000 | 00000 |
Pulleys are XL series (extra light) and have trapezoidal teeth. Select a pulley with a maximum belt width that’s the same or larger than your timing belt width.
For technical drawings and 3-D models, click on a part number.
OD | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Outside Wd. | Overall Wd. | Pitch Dia. | Fabrication | Hub Dia. | Each | |
For 3/8" Max. Belt Wd. | |||||||||||
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2.781" | 44 | 0.200" | 5/16" | Finished | 0.563" | 1" | 2.801" | Sintered | 1.5" | 00000000 | 000000 |
Anodized aluminum has good corrosion resistance. Pulleys are MXL series (miniature extra light) and have trapezoidal teeth. The teeth match up with the grooves along the inside diameter of a timing belt in order to move components forward or backward. Select a pulley with a maximum belt width that’s the same or larger than your timing belt width.
For technical drawings and 3-D models, click on a part number.
OD | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Number of Flanges | Fabrication | Material | Hub Dia. | Each | |
For 3 mm Max. Belt Wd. | ||||||||||||||
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33.4mm | 44 | 2.030mm | 6mm | Finished | 4mm | 7mm | 13.5mm | 28.5mm | 2 | Machined | Anodized Aluminum | 21.8mm | 00000000 | 000000 |
For 6 mm Max. Belt Wd. | ||||||||||||||
33.4mm | 44 | 2.030mm | 6mm | Finished | 7.2mm | 10.3mm | 18.3mm | 28.5mm | 2 | Machined | Anodized Aluminum | 21.8mm | 00000000 | 00000 |
For 9 mm Max. Belt Wd. | ||||||||||||||
33.4mm | 44 | 2.030mm | 6mm | Finished | 10.4mm | 13.5mm | 21.4mm | 28.5mm | 2 | Machined | Anodized Aluminum | 21.8mm | 00000000 | 00000 |
Made from polycarbonate, these pulleys are useful in applications with weight constraints. All are MXL series (miniature extra light) and have trapezoidal teeth. The teeth match up with the grooves along the inside diameter of a timing belt in order to move components forward or backward. Select a pulley with a maximum belt width that’s the same or larger than your timing belt width.
For technical drawings and 3-D models, click on a part number.
OD | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Fabrication | Material | Hub Dia. | Each | |
1 Flange | |||||||||||||
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For 6 mm Max. Belt Wd. | |||||||||||||
33mm | 44 | 2.030mm | 8mm | Finished | 8mm | 11.2mm | 11.2mm | 28.5mm | Molded | Polycarbonate | 17.5mm | 0000000 | 00000 |
33mm | 44 | 2.030mm | 8mm | Finished | 8mm | 11.2mm | 17.5mm | 28.5mm | Molded | Polycarbonate | 17.5mm | 0000000 | 0000 |
2 Flanges | |||||||||||||
For 6 mm Max. Belt Wd. | |||||||||||||
33mm | 44 | 2.030mm | 8mm | Finished | 8mm | 11.2mm | 11.2mm | 28.5mm | Molded | Polycarbonate | 17.5mm | 0000000 | 00000 |
These HTD (high torque drive) pulleys have a curved tooth shape that provides higher strength than trapezoidal teeth. Select a pulley with a maximum belt width that’s the same or larger than your timing belt width.
Bushing-mount pulleys grip the shaft more securely than pulleys that press fit. Quick-disconnect (QD) bushings sold separately.
For technical drawings and 3-D models, click on a part number.
OD, mm | Number of Teeth | Pitch, mm | ID | Bore Type | For Bushing Style | Inside Wd., mm | Outside Wd., mm | Overall Wd., mm | Pitch Dia., mm | Number of Flanges | Fabrication | Material | Each | |
For 20 mm Max. Belt Wd. | ||||||||||||||
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120.91 | 44 | 8 | 2.187" | Finished | Quick Disconnect Style SDS | 22.35 | 28.7 | 28.7 | 112.039 | 2 | Machined | Zinc-Plated Steel | 00000000 | 000000 |
For 30 mm Max. Belt Wd. | ||||||||||||||
120.91 | 44 | 8 | 2.187" | Finished | Quick Disconnect Style SDS | 31.88 | 38.23 | 38.23 | 112.039 | 2 | Machined | Zinc-Plated Steel | 00000000 | 00000 |
Move belts forward and backward or stop and start them in precise positions, especially in areas where rust is a concern. The curved teeth on these high-torque drive (HTD) pulleys have more surface contact with belts than traditional trapezoidal teeth, which allows you to apply more torque without damaging belts. These teeth fit together seamlessly to prevent backlash, or unwanted movement of the belt on the pulley, for a smooth, quiet cycle. These pulleys are often used in 3D printing, machine tool drives, robotics, and other applications where precision is essential. They are also known as curvilinear belt pulleys.
Pair pulleys with an HTD timing belt that has the same pitch. The width of your belt should not be larger than the maximum belt width listed.
Stainless steel pulleys can be wetted repeatedly without rusting or staining.
Bushing-mount pulleys grip the shaft more securely than press-fit pulleys, but require a quick-disconnect (QD) bushing (not included).
For technical drawings and 3-D models, click on a part number.
OD, mm | Number of Teeth | Pitch, mm | ID | Bore Type | For Bushing Style | Inside Wd., mm | Outside Wd., mm | Overall Wd., mm | Pitch Dia., mm | Number of Flanges | Fabrication | Each | |
For 20 mm Max. Belt Wd. | |||||||||||||
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120.65 | 44 | 8 | 2.187" | Finished | Quick Disconnect Style SDS | 22.35 | 28.58 | 28.58 | 110.667 | 2 | Machined | 0000000 | 0000000 |
For 30 mm Max. Belt Wd. | |||||||||||||
120.65 | 44 | 8 | 2.187" | Finished | Quick Disconnect Style SDS | 31.75 | 38.1 | 38.1 | 110.667 | 2 | Machined | 0000000 | 000000 |
For higher speed or higher torque applications, these GT series timing belt pulleys provide a more precise fit than HTD pulleys. Use them where accuracy is critical, such as in storage and retrieval systems or in robotics. Similar to HTD timing belt pulleys, their teeth are curved for high strength. The curved teeth create positive grip engagement with timing belts, so these pulleys do not require re-tensioning—unlike drives using V-belts or sheaves. And unlike chain drives, there’s no metal-on-metal contact, so these pulleys don’t require lubrication.
Anodized aluminum pulleys are lightweight and resist corrosion. They have a finished bore and come with set screws for mounting on shafts.
For technical drawings and 3-D models, click on a part number.
Number of Teeth | Pitch, mm | For Shaft Diameter | Bore Type | Inside Width, mm | Outside Width, mm | Overall Width, mm | Pitch Diameter, mm | Number of Flanges | Fabrication | Material | Hub Diameter, mm | Each | |
For 9 mm Maximum Belt Width | |||||||||||||
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44 | 3 | 1/4" | Finished | 10.16 | 13.46 | 21.16 | 42.012 | 2 | Machined | Anodized Aluminum | 33.02 | 0000000 | 000000 |
Number of Teeth | Pitch, mm | ID | Bore Type | For Bushing Style | Inside Width, mm | Outside Width, mm | Overall Width, mm | Pitch Diameter, mm | Number of Flanges | Fabrication | Material | Each | |
For 40 mm Maximum Belt Width | |||||||||||||
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44 | 14 | 3.375" | Plain | Taper-Lock Style 2517 | 46.23 | 54.1 | 54.1 | 196.088 | 2 | Machined | Black-Oxide Iron | 00000000 | 0000000 |
The current industry standard, these 20° pressure angle gears have thicker, stronger teeth than 14½° pressure angle gears. Compared to plastic gears and racks, they’re better for high-load, high-speed, and heavy duty applications. Also known as spur gears.
Combine gears with different numbers of teeth to change speed and torque in your assembly. 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.
For components to mesh correctly, they must have the same pressure angle and pitch/module.
Carbon steel components have hard, strong, and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals. They're best for high-torque machines, like lifting equipment, and heavy duty applications, such as rock crushing. Gears with teeth that are not hardened can be hardened to fit your application.
For technical drawings and 3-D models, click on a part number.
Hub | ||||||||||||
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Module | Number of Teeth | Pitch Dia., mm | OD, mm | Face Wd., mm | Overall Wd., mm | For Shaft Dia., mm | Material | Teeth Heat Treatment | Dia., mm | Wd., mm | Each | |
Round Bore | ||||||||||||
2 | 44 | 88 | 92 | 20 | 30 | 15 | Black-Oxide 1045 Carbon Steel | Not Hardened | 55 | 10 | 00000000 | 000000 |
The helical teeth on these gears stay in contact for longer than straight teeth, which allows them to transmit higher loads at higher speeds than spur gears.
For gears to mesh correctly, they must have the same pressure angle and pitch. All of these gears transmit motion in a straight line—make sure to get one left-hand and one right-hand gear. To change speed and torque in your assembly, pair two gears with different numbers of teeth.
Standard helical components have a 21 1/2° helix angle so they only transmit motion in a straight line since the helix angle is so small. Made from alloy steel, these gears resist abrasion and are stronger than carbon steel gears. Their teeth are ground, so they're more precise than gears with rolled teeth. Pair them with a rack or a gear that has a different tooth direction.
Gears with hardened teeth have better wear resistance than gears with teeth that are not hardened.
For technical drawings and 3-D models, click on a part number.
Hub | ||||||||||||
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Module | Number of Teeth | Helix Angle | Pitch Dia., mm | OD, mm | Face Wd., mm | Overall Wd., mm | For Shaft Dia., mm | Teeth Heat Treatment | Dia., mm | Wd., mm | Each | |
Left Hand | ||||||||||||
Round Bore—4140 Alloy Steel | ||||||||||||
1 | 44 | 21 1/2° | 44 | 46 | 8 | 18 | 10 | Hardened | 30 | 10 | 00000000 | 0000000 |
1.5 | 44 | 21 1/2° | 66 | 69 | 12 | 24 | 15 | Hardened | 50 | 12 | 00000000 | 000000 |
2 | 44 | 21 1/2° | 88 | 92 | 16 | 29 | 20 | Hardened | 60 | 13 | 00000000 | 000000 |
Right Hand | ||||||||||||
Round Bore—4140 Alloy Steel | ||||||||||||
1 | 44 | 21 1/2° | 44 | 46 | 8 | 18 | 10 | Hardened | 30 | 10 | 00000000 | 000000 |
1.5 | 44 | 21 1/2° | 66 | 69 | 12 | 24 | 15 | Hardened | 50 | 12 | 00000000 | 000000 |
2 | 44 | 21 1/2° | 88 | 92 | 16 | 29 | 20 | Hardened | 60 | 13 | 00000000 | 000000 |
A former industry standard, 14½° pressure angle gears are often found on older machinery. Made of plastic, they run quieter than metal gears and have good corrosion and chemical resistance. They’re also known as spur gears.
Combine gears with different numbers of teeth to change speed and torque in your assembly. Combine a gear and rack to convert rotary motion into linear motion.
For components to mesh correctly, they must have the same pressure angle and pitch.
For technical drawings and 3-D models, click on a part number.
Hub | |||||||||||||
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Pitch | Number of Teeth | Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Material | Fabrication | Color | Dia. | Wd. | Each | |
Round Bore | |||||||||||||
32 | 44 | 1.375" | 1.44" | 3/16" | 0.438" | 1/4" | Nylon Plastic | Molded | White | 0.625" | 0.25" | 00000000 | 00000 |