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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 | Outside Wd. | Overall Wd. | Pitch Dia. | Fabrication | Material | Hub Dia. | Each | |
For 6 mm Max. Belt Wd. | ||||||||||||
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64.2mm | 100 | 2.030mm | 8mm | Finished | 9.5mm | 19.1mm | 64.7mm | Machined | Anodized Aluminum | 38.1mm | 00000000 | 000000 |
For 9 mm Max. Belt Wd. | ||||||||||||
64.2mm | 100 | 2.030mm | 8mm | Finished | 12.7mm | 22.2mm | 64.7mm | Machined | Anodized Aluminum | 38.1mm | 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. | |||||||||||||
69mm | 100 | 2.030mm | 8mm | Finished | 8mm | 11.2mm | 17.5mm | 64.7mm | Molded | Polycarbonate | 17.5mm | 0000000 | 000000 |
2 Flanges | |||||||||||||
For 6 mm Max. Belt Wd. | |||||||||||||
69mm | 100 | 2.030mm | 8mm | Finished | 8mm | 11.2mm | 17.5mm | 64.7mm | Molded | Polycarbonate | 17.5mm | 0000000 | 00000 |
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 | Outside Width, mm | Overall Width, mm | Pitch Diameter, mm | Fabrication | Material | Hub Diameter, mm | Each | |
For 6 mm Maximum Belt Width | |||||||||||
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100 | 2 | 5/16" | Finished | 9.65 | 19.05 | 63.652 | Machined | Anodized Aluminum | 38.1 | 00000000 | 000000 |
For 9 mm Maximum Belt Width | |||||||||||
100 | 3 | 5/16" | Finished | 12.7 | 22.26 | 95.504 | Machined | Anodized Aluminum | 31.75 | 0000000 | 00000 |
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.
Stainless steel gears and racks resist rust in damp and wet environments, so they're commonly used in food-processing plants and other areas with frequent cleaning. 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.
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 | Set Screw Thread Size | Clamping Screw Thread Size | Each | |
Round Bore | ||||||||||||||
1 | 100 | 100 | 102 | 10 | 20 | 10 | Black-Oxide 1045 Carbon Steel | Not Hardened | 40 | 10 | __ | __ | 00000000 | 000000 |
1 | 100 | 100 | 102 | 10 | 30 | 12 | 303 Stainless Steel | Not Hardened | 60 | 20 | __ | __ | 00000000 | 000000 |
1.5 | 100 | 150 | 153 | 15 | 29 | 15 | 303 Stainless Steel | Not Hardened | 80 | 14 | __ | __ | 00000000 | 000000 |
Round Bore with Set Screw | ||||||||||||||
0.5 | 100 | 50 | 51 | 5 | 12 | 8 | Black-Oxide 1045 Carbon Steel | Not Hardened | 28 | 7 | M5 | __ | 00000000 | 00000 |
Clamping Bore with Clamping Screw | ||||||||||||||
0.5 | 100 | 50 | 51 | 5 | 19 | 10 | 303 Stainless Steel | Not Hardened | 24 | 14 | __ | M4 | 0000000 | 000000 |
1 | 100 | 100 | 102 | 6 | 20 | 10 | 303 Stainless Steel | Not Hardened | 24 | 14 | __ | M4 | 0000000 | 000000 |
Module | Number of Teeth | Pitch Dia., mm | OD, mm | ID, mm | Face Wd. | Material | Teeth Heat Treatment | Each | |
0.5 | 100 | 50 | 70 | 49 | 5mm | Black-Oxide 1045 Carbon Steel | Not Hardened | 0000000 | 000000 |
0.8 | 100 | 80 | 105 | 78.4 | 8mm | Black-Oxide 1045 Carbon Steel | Not Hardened | 0000000 | 000000 |
1 | 100 | 100 | 130 | 98 | 10mm | Black-Oxide 1045 Carbon Steel | Not Hardened | 0000000 | 000000 |
1.5 | 100 | 150 | 190 | 147 | 15mm | Black-Oxide 1045 Carbon Steel | Not Hardened | 0000000 | 000000 |
2 | 100 | 200 | 250 | 196 | 20mm | Black-Oxide 1045 Carbon Steel | Not Hardened | 0000000 | 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 | 100 | 21 1/2° | 100 | 102 | 8 | 18 | 15 | Hardened | 50 | 10 | 00000000 | 0000000 |
1.5 | 100 | 21 1/2° | 150 | 153 | 12 | 24 | 20 | Hardened | 70 | 12 | 00000000 | 000000 |
Right Hand | ||||||||||||
Round Bore—4140 Alloy Steel | ||||||||||||
1 | 100 | 21 1/2° | 100 | 102 | 8 | 18 | 15 | Hardened | 50 | 10 | 00000000 | 000000 |
1.5 | 100 | 21 1/2° | 150 | 153 | 12 | 24 | 20 | Hardened | 70 | 12 | 00000000 | 000000 |
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 and pitch/module. These worms are compatible with plastic worm gears.
Speed ratio is the ratio by which output shaft speed is reduced. As speed decreases, torque increases.
Cast iron gears are strong and durable.
For technical drawings and 3-D models, click on a part number.
Hub | |||||||||||||||||
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Pitch | Speed Ratio | Number of Teeth | Pressure Angle | Pitch Dia. | For Number of Thread Starts | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Dia. | Wd. | Material | For Thread Direction | Teeth Heat Treatment | Teeth Fabrication | Each | |
Round Bore—Cast Iron | |||||||||||||||||
10 | 100:1 | 100 | 14 1/2° | 10" | 1 | 10.22" | 5/8" | 1.375" | 3/4" | 2.5" | 0.75" | Cast Iron | Right Hand | Not Hardened | Not Ground | 000000000 | 0000000 |
Hub | |||||||||||||||||
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Module | Speed Ratio | Number of Teeth | Pressure Angle | Pitch Dia., mm | For Number of Thread Starts | OD, mm | Face Wd., mm | Overall Wd., mm | For Shaft Dia., mm | Dia., mm | Wd., mm | Material | For Thread Direction | Teeth Heat Treatment | Teeth Fabrication | Each | |
Round Bore—Cast Iron | |||||||||||||||||
1 | 100:1 | 100 | 20° | 100 | 1 | 103 | 10 | 20 | 10 | 40 | 10 | Cast Iron | Right Hand | Not Hardened | Not Ground | 000000000 | 000000 |
1.5 | 100:1 | 100 | 20° | 150 | 1 | 154.5 | 14 | 24 | 15 | 50 | 10 | Cast Iron | Right Hand | Not Hardened | Not Ground | 000000000 | 000000 |
The current industry standard, these 20° pressure angle gears have thicker, stronger teeth than 14½° pressure angle gears. 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/module.
Acetal gears are best suited for use in light duty machines or for prototyping. Gears with a clamping bore secure to shafts with a clamping screw. They’re easily removed or adjusted without marring your shaft.
Nylon gears can be operated without lubrication, so they’re commonly used in food-processing machines.
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 | Fabrication | Color | Dia., mm | Wd., mm | Clamping Screw Thread Size | Each | |
Round Bore | ||||||||||||||
1 | 100 | 100 | 102 | 10 | 20 | 10 | Nylon Plastic | Machined | Blue | 40 | 10 | __ | 00000000 | 000000 |
1.5 | 100 | 150 | 153 | 15 | 25 | 12 | Nylon Plastic | Machined | Blue | 60 | 10 | __ | 00000000 | 000000 |
Clamping Bore | ||||||||||||||
0.5 | 100 | 50 | 51 | 5 | 15 | 8 | Acetal Plastic | Molded | White | 19 | 10 | M3 | 00000000 | 00000 |
1 | 100 | 100 | 102 | 6 | 16 | 8 | Acetal Plastic | Molded | White | 19 | 10 | M3 | 00000000 | 000000 |
Compared to plastic gears, these metal ratcheting 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.
Gears with hardened teeth are more wear resistant 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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Face Wd. | Number of Teeth | OD | For Shaft Dia. | Mounting Distance | Material | Teeth Heat Treatment | Overall Wd. | Dia. | Wd. | Each | |
Round Bore | |||||||||||
6mm | 100 | 66.6mm | 12mm | 44.1mm | 1045 Carbon Steel | Hardened | 6 mm | __ | __ | 0000000 | 000000 |
6mm | 100 | 66.6mm | 12mm | 44.1mm | 1045 Carbon Steel | Hardened | 16 mm | 40 mm | 10 mm | 0000000 | 00000 |
12mm | 100 | 100mm | 15mm | 62.2mm | 1045 Carbon Steel | Hardened | 12 mm | __ | __ | 0000000 | 00000 |
12mm | 100 | 100mm | 15mm | 62.2mm | 1045 Carbon Steel | Hardened | 24 mm | 50 mm | 12 mm | 0000000 | 00000 |