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About Roller Chain and Sprockets
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Sprockets for Metric Roller Chain
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 ISO 04B Roller Chain (6 mm Pitch) | |||||||||
---|---|---|---|---|---|---|---|---|---|
14 | 6 | 12 | 29.4 | 10 | 20 | Steel | DIN 8187, ISO 606 | 0000000 | 000000 |
15 | 6 | 12 | 31.3 | 10 | 20 | Steel | DIN 8187, ISO 606 | 0000000 | 00000 |
16 | 8 | 12 | 33.2 | 13 | 20 | Steel | DIN 8187, ISO 606 | 0000000 | 00000 |
17 | 8 | 12 | 35.1 | 13 | 20 | Steel | DIN 8187, ISO 606 | 0000000 | 00000 |
18 | 8 | 12 | 37 | 13 | 20 | Steel | DIN 8187, ISO 606 | 0000000 | 00000 |
19 | 8 | 12 | 38.9 | 13 | 20 | Steel | DIN 8187, ISO 606 | 0000000 | 00000 |
20 | 8 | 12 | 40.8 | 13 | 20 | Steel | DIN 8187, ISO 606 | 0000000 | 00000 |
21 | 8 | 15 | 42.7 | 13 | 20 | Steel | DIN 8187, ISO 606 | 0000000 | 00000 |
For ISO 05B Roller Chain (8 mm Pitch) | |||||||||
12 | 8 | 12 | 33.5 | 13 | 20 | Steel | DIN 8187, ISO 606 | 0000000 | 00000 |
For ISO 06B Roller Chain (9.53 mm Pitch) | |||||||||
10 | 8 | 12 | 34 | 22 | 20 | Steel | DIN 8187, ISO 606 | 0000000 | 00000 |
Metal Gears and Gear Racks—20° Pressure Angle
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.
Brass gears and 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.
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.
For technical drawings and 3-D models, click on a part number.
Hub | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Module | Number of Teeth | Gear 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 | Each | |
Round Bore | |||||||||||||
1 | 18 | 18 | 20 | 10 | 30 | 8 | 303 Stainless Steel | Not Hardened | 20 | 20 | __ | 00000000 | 000000 |
1 | 24 | 24 | 26 | 10 | 20 | 8 | 303 Stainless Steel | Not Hardened | 20 | 10 | __ | 00000000 | 00000 |
1.5 | 16 | 24 | 27 | 15 | 29 | 8 | 303 Stainless Steel | Not Hardened | 20 | 14 | __ | 00000000 | 00000 |
Round Bore with Set Screw | |||||||||||||
0.5 | 45 | 22.5 | 23.5 | 5 | 12 | 5 | Black-Oxide 1045 Carbon Steel | Not Hardened | 20 | 7 | M4 | 00000000 | 00000 |
0.8 | 30 | 24 | 25.6 | 4 | 12 | 4 | Brass | __ | 20 | 8 | M3 | 00000000 | 00000 |
0.8 | 30 | 24 | 25.6 | 4 | 12 | 6 | Brass | __ | 20 | 8 | M4 | 00000000 | 00000 |
1 | 23 | 23 | 25 | 6 | 14 | 6 | Brass | __ | 20 | 8 | M4 | 00000000 | 00000 |
1 | 24 | 24 | 26 | 6 | 14 | 8 | Brass | __ | 20 | 8 | M5 | 00000000 | 00000 |
1 | 24 | 24 | 26 | 10 | 20 | 6 | Black-Oxide 1045 Carbon Steel | Not Hardened | 20 | 10 | M4 | 00000000 | 00000 |
1 | 24 | 24 | 26 | 10 | 20 | 8 | Black-Oxide 1045 Carbon Steel | Not Hardened | 20 | 10 | M5 | 00000000 | 00000 |
1 | 25 | 25 | 27 | 10 | 20 | 6 | Black-Oxide 1045 Carbon Steel | Not Hardened | 20 | 10 | M4 | 00000000 | 00000 |
1 | 25 | 25 | 27 | 10 | 20 | 8 | Black-Oxide 1045 Carbon Steel | Not Hardened | 20 | 10 | M5 | 00000000 | 00000 |
1.5 | 16 | 24 | 27 | 15 | 25 | 8 | Black-Oxide 1045 Carbon Steel | Not Hardened | 20 | 10 | M5 | 00000000 | 00000 |
Metal Miter Gears
With straight, conically shaped teeth and a 1:1 speed ratio, miter gears connect two shafts at an angle without changing shaft speed or torque. They're more efficient than spiral miter gears because they create less friction.
For two gears to mesh correctly, they must have the same pressure angle, shaft angle, pitch/module, and number of teeth.
Stainless steel gears won’t rust in damp or wet environments. They’re commonly used in food-processing plants and other areas where frequent cleaning takes place.
For technical drawings and 3-D models, click on a part number.
Hub | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Module | Number of Teeth | For Shaft Angle | Pressure Angle | Gear Pitch Dia., mm | OD, mm | Face Wd., mm | Overall Wd., mm | For Shaft Dia., mm | Mounting Distance, mm | Teeth Heat Treatment | Dia., mm | Wd., mm | Set Screw Thread Size | Each | |
Round Bore with Set Screw—303 Stainless Steel | |||||||||||||||
1 | 25 | 90° | 20° | 25 | 26.4 | 6 | 15.2 | 6 | 23 | Not Hardened | 20 | 8 | M4 | 0000000 | 000000 |
Metal Worms and Worm Gears
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.
1045 carbon steel worms have rolled threads. Hardened 1045 carbon steel worms have ground threads, which are more durable and precise than rolled threads.
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.
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.
For technical drawings and 3-D models, click on a part number.
Hub | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Module | Pressure Angle | Worm Lg., mm | Gear Pitch Dia., mm | OD, mm | For Shaft Dia., mm | Number of Thread Starts | Dia., mm | Material | Thread Direction | Teeth Heat Treatment | Teeth Fabrication | Set Screw Included | Each | |
Round Bore—Black-Oxide 1045 Carbon Steel | ||||||||||||||
1.5 | 20° | 40 | 25 | 28 | 8 | 1 | 20 | 1045 Carbon Steel | Right Hand | Not Hardened | Not Ground | No | 000000000 | 000000 |
1.5 | 20° | 40 | 25 | 28 | 8 | 2 | 20 | 1045 Carbon Steel | Right Hand | Not Hardened | Not Ground | No | 000000000 | 00000 |
1.5 | 20° | 40 | 25 | 28 | 10 | 1 | 20 | 1045 Carbon Steel | Right Hand | Hardened | Ground | No | 000000000 | 000000 |
Round Bore—303 Stainless Steel | ||||||||||||||
1.5 | 20° | 40 | 25 | 28 | 8 | 2 | 20 | 303 Stainless Steel | Right Hand | Not Hardened | Not Ground | No | 000000000 | 00000 |
Hub | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Module | Speed Ratio | Number of Teeth | Pressure Angle | Gear 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—Bronze | |||||||||||||||||
0.5 | 50:1 | 50 | 20° | 25 | 1 | 26 | 5 | 12 | 5 | 20 | 7 | Bronze | Right Hand | Not Hardened | Not Ground | 000000000 | 000000 |
0.8 | 40:1 | 40 | 20° | 32 | 1 | 33.6 | 9 | 18 | 6 | 20 | 9 | Bronze | Right Hand | Not Hardened | Not Ground | 000000000 | 00000 |
1 | 30:1 | 30 | 20° | 30 | 1 | 33 | 10 | 20 | 6 | 20 | 10 | Bronze | Right Hand | Not Hardened | Not Ground | 000000000 | 00000 |
1.25 | 20:1 | 20 | 20° | 25 | 1 | 28.75 | 10 | 20 | 6 | 20 | 10 | Bronze | Right Hand | Not Hardened | Not Ground | 000000000 | 00000 |
Plastic Gears and Gear Racks—20° Pressure Angle
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.
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 | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Module | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Face Wd., mm | Overall Wd., mm | For Shaft Dia., mm | Material | Fabrication | Color | Dia., mm | Wd., mm | Each | |
Round Bore | |||||||||||||
1 | 24 | 24 | 26 | 10 | 20 | 8 | Nylon Plastic | Machined | Blue | 20 | 10 | 00000000 | 000000 |
1 | 25 | 25 | 27 | 10 | 20 | 8 | Nylon Plastic | Machined | Blue | 20 | 10 | 00000000 | 00000 |
1 | 26 | 26 | 28 | 10 | 20 | 8 | Nylon Plastic | Machined | Blue | 20 | 10 | 00000000 | 00000 |
1.5 | 16 | 24 | 27 | 15 | 25 | 8 | Nylon Plastic | Machined | Blue | 20 | 10 | 00000000 | 00000 |
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 and module.
Speed ratio is the ratio by which output shaft speed is reduced. As speed decreases, torque increases.
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.
Nylon gears are lightweight and stronger than acetal gears.
For technical drawings and 3-D models, click on a part number.
Hub | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Module | Speed Ratio | Number of Teeth | Pressure Angle | Gear Pitch Dia., mm | For Number of Thread Starts | OD, mm | Face Width, mm | Overall Width, mm | For Shaft Diameter, mm | Material | Fabrication | Color | Diameter, mm | Width, mm | For Thread Direction | Each | |
Round Bore | |||||||||||||||||
0.5 | 50:1 | 50 | 20° | 25 | 1 | 26 | 5 | 12 | 5 | Acetal Plastic | Molded | White | 20 | 7 | Right Hand | 00000000 | 000000 |
1 | 30:1 | 30 | 20° | 30 | 1 | 33 | 10 | 20 | 6 | Nylon Plastic | Molded | Blue | 20 | 10 | Right Hand | 00000000 | 00000 |
Plastic Miter Gears
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.
Nylon gears are self-lubricating, so they’re often used in food machinery. However, they’re not approved for direct contact with food or chemicals that will come into contact with food.
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.
For technical drawings and 3-D models, click on a part number.