About Roller Chain and Sprockets
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Sprockets for Double-Strand Metric Roller Chain
The double row of teeth on these sprockets are designed to fit into metric ISO double-strand roller chain. They have an unfinished bore that’s machined to the shaft diameter size listed. Machine them to fit any shaft up to the maximum shaft diameter size. The extended hub makes these sprockets more stable and more durable than flat sprockets. They meet ISO 606 (formerly DIN 8187), which is an international standard for sprocket and roller chain dimensions and materials.
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 08B-2 Roller Chain (12.7 mm Pitch) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 26 | 20 | 56 | 112.73 | 40 | 85 | Steel | DIN 8187, ISO 606 | 0000000 | 0000000 |
| 30 | 20 | 64 | 128.86 | 40 | 100 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
| 36 | 20 | 73 | 153.08 | 40 | 110 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
| 38 | 20 | 73 | 161.16 | 45 | 110 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
| 42 | 20 | 73 | 177.31 | 45 | 110 | Steel | DIN 8187, ISO 606 | 0000000 | 000000 |
For ISO 12B-2 Roller Chain (19.05 mm Pitch) | |||||||||
| 17 | 20 | 54 | 115.42 | 50 | 83 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
| 19 | 20 | 62 | 127.49 | 50 | 95 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
Idler Sprockets for Metric Roller Chain
Keep constant tension on your drive with these sprockets that press against your metric ISO roller chain to take up slack and reduce wear and vibration. They rotate freely on built-in ball bearings, which are double sealed to keep dirt out, and are for use with roller chain tensioners. All come with a finished bore that fits directly onto your shaft—no need for machining. These sprockets meet ISO 606, which is an international standard for dimensions and materials.
For technical drawings and 3-D models, click on a part number.
Bearing | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number of Teeth | For Shaft Dia., mm | OD, mm | Overall Wd., mm | Hub Dia., mm | Material | Type | Material | Specifications Met | Each | |
For ISO 16B Roller Chain (25.4 mm Pitch) | ||||||||||
| 12 | 20 | 109 | 18 | 47 | Steel | Ball | Steel | ISO 606 | 000000 | 000000 |
Taper-Lock Bushings
Mount these hubless bushings flush into your sprocket or pulley for a slim profile with no protruding screws. They are for use with taper-lock sprockets of the same bushing style. As you tighten the included set screws, the bushing grips the shaft and pulls it into your sprocket or pulley.
For technical drawings and 3-D models, click on a part number.
Keyway | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Overall Wd. | Wd. | Dp. | Taper | Fastener Tightening Torque, in.-lbs. | Material | Includes | Each | |
1008 Style Bushing | |||||||||
| 20mm | 22mm | 6mm | 2.8mm | 8° | 55 | Steel | Set Screws | 000000000 | 000000 |
1108 Style Bushing | |||||||||
| 20mm | 22mm | 6mm | 2.8mm | 8° | 55 | Steel | Set Screws | 000000000 | 00000 |
1210 Style Bushing | |||||||||
| 20mm | 25mm | 6mm | 2.8mm | 8° | 175 | Steel | Set Screws | 000000000 | 00000 |
1610 Style Bushing | |||||||||
| 20mm | 25mm | 6mm | 2.8mm | 8° | 175 | Steel | Set Screws | 000000000 | 00000 |
1615 Style Bushing | |||||||||
| 20mm | 38mm | 6mm | 2.8mm | 8° | 175 | Steel | Set Screws | 000000000 | 00000 |
2012 Style Bushing | |||||||||
| 20mm | 32mm | 6mm | 2.8mm | 8° | 280 | Steel | Set Screws | 000000000 | 00000 |
Split-Tapered Bushings
The tapered barrel on these bushings is split on both sides, allowing them to contract more tightly around the shaft than quick-disconnect and taper-lock bushings. They're for use with split-tapered sprockets and pulleys of the same bushing style. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.
For technical drawings and 3-D models, click on a part number.
Keyway | |||||||
|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Overall Wd. | Wd. | Dp. | Taper | Fastener Tightening Torque, in.-lbs. | Each | |
Steel | |||||||
H Style Bushing | |||||||
| 20mm | 1 1/4" | 6mm | 3mm | 3° | 95 | 00000000 | 000000 |
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 technical drawings and 3-D models, click on a part number.
Flanged Screw-Clamp Bushings
A mounting flange prevents movement during tightening. These bushings are good for shock loads. When you tighten the included screws, the bushing's inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear. They can be mounted on shafts with or without keyways.
For technical drawings and 3-D models, click on a part number.
| For Shaft Dia. | OD | Overall Wd. | Max. Torque, in.-lbs. | Fastener Tightening Torque, in.-lbs. | Material | Includes | Each | |
| 20mm | 38mm | 30mm | 1,800 | 90 | Steel | Clamping Screws | 0000000 | 000000 |
Corrosion-Resistant Flanged Screw-Clamp Bushings
Made from stainless steel or plated with nickel, these bushings resist corrosion. A mounting flange prevents movement during tightening. As screw-clamp bushings, they're good for shock loads. When you tighten the clamping screws, the bushing's inner sleeve tightens onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear.
Nickel-plated steel bushings have good corrosion resistance in wet environments. However, the plating may begin to flake with long-term use.
Stainless steel bushings have excellent corrosion resistance and can withstand prolonged exposure to moisture.
For technical drawings and 3-D models, click on a part number.
Quick-Grip Flanged Hydraulic Bushings
Tighten just one set screw to clamp these bushings evenly around your shaft. The screw forces hydraulic fluid in between the double-walled sleeve, expanding the two walls against the shaft and the hub of your sprocket, pulley, or gear for a tight hold. Since you don’t have to tighten multiple screw clamps individually, these bushings are quick to adjust and more likely to stay aligned on your shaft. They’re also good for shock loads. A mounting flange prevents movement during tightening. Use a hex key to tighten.
Note: To avoid deforming the sleeve walls, make sure to fully tighten the screw.
Stainless steel bushings have excellent corrosion resistance in most environments.
For technical drawings and 3-D models, click on a part number.