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Number of Teeth
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Sprocket Type
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Export Control Classification Number (ECCN)
Sprockets
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Finished Bore |
Sprocket teeth mesh with your roller chain to smoothly transmit power. These U.S.-made sprockets have machined teeth for a more precise fit than flame-cut or punched teeth, allowing them to glide in and out of the chain to reduce wear and extend chain life.
Steel—Steel is strong, but best for dry environments since moisture will cause it to rust.
Finished Bore—Mount these sprockets onto your shaft and secure with a set screw—no machining required.
For Roller Chain | Keyway | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Trade No. | Std. | Pitch | No. of Teeth | OD | Bore Type | For Shaft Dia. | Wd. | Dp. | Each | |||
For Single Strand | ||||||||||||
Steel | ||||||||||||
| 40 | ANSI | 1/2" | 34 | 5 11/16" | Finished | 5/8" | 3/16" | 3/32" | 6236K175 | 000000 | ||
| 40 | ANSI | 1/2" | 34 | 5 11/16" | Finished | 3/4" | 3/16" | 3/32" | 6236K176 | 00000 | ||
| 40 | ANSI | 1/2" | 34 | 5 11/16" | Finished | 7/8" | 3/16" | 3/32" | 6236K177 | 00000 | ||
| 40 | ANSI | 1/2" | 34 | 5 11/16" | Finished | 1" | 1/4" | 1/8" | 6236K178 | 00000 | ||
| 40 | ANSI | 1/2" | 34 | 5 11/16" | Finished | 1 1/8" | 1/4" | 1/8" | 6236K179 | 00000 | ||
| 40 | ANSI | 1/2" | 34 | 5 11/16" | Finished | 1 3/16" | 1/4" | 1/8" | 6236K181 | 00000 | ||
| 40 | ANSI | 1/2" | 34 | 5 11/16" | Finished | 1 1/4" | 1/4" | 1/8" | 6236K182 | 00000 | ||
| 40 | ANSI | 1/2" | 34 | 5 11/16" | Finished | 1 3/8" | 5/16" | 5/32" | 6236K832 | 00000 | ||
| 40 | ANSI | 1/2" | 34 | 5 11/16" | Finished | 1 7/16" | 3/8" | 3/16" | 6236K183 | 00000 | ||
| 40 | ANSI | 1/2" | 34 | 5 11/16" | Finished | 1 1/2" | 3/8" | 3/16" | 6236K184 | 00000 | ||
| 50 | ANSI | 5/8" | 34 | 7 1/8" | Finished | 3/4" | 3/16" | 3/32" | 6236K297 | 000000 | ||
| 50 | ANSI | 5/8" | 34 | 7 1/8" | Finished | 7/8" | 3/16" | 3/32" | 6236K298 | 000000 | ||
| 50 | ANSI | 5/8" | 34 | 7 1/8" | Finished | 1" | 1/4" | 1/8" | 6236K299 | 000000 | ||
| 50 | ANSI | 5/8" | 34 | 7 1/8" | Finished | 1 1/8" | 1/4" | 1/8" | 6236K301 | 000000 | ||
| 50 | ANSI | 5/8" | 34 | 7 1/8" | Finished | 1 3/16" | 1/4" | 1/8" | 6236K302 | 000000 | ||
| 50 | ANSI | 5/8" | 34 | 7 1/8" | Finished | 1 1/4" | 1/4" | 1/8" | 6236K303 | 000000 | ||
| 50 | ANSI | 5/8" | 34 | 7 1/8" | Finished | 1 3/8" | 5/16" | 5/32" | 6236K304 | 000000 | ||
| 50 | ANSI | 5/8" | 34 | 7 1/8" | Finished | 1 7/16" | 3/8" | 3/16" | 6236K305 | 000000 | ||
| 50 | ANSI | 5/8" | 34 | 7 1/8" | Finished | 1 1/2" | 3/8" | 3/16" | 6236K306 | 000000 | ||
| 50 | ANSI | 5/8" | 34 | 7 1/8" | Finished | 1 5/8" | 3/8" | 3/16" | 6236K844 | 000000 | ||
| 50 | ANSI | 5/8" | 34 | 7 1/8" | Finished | 1 3/4" | 3/8" | 3/16" | 6236K307 | 000000 | ||
| 50 | ANSI | 5/8" | 34 | 7 1/8" | Finished | 1 15/16" | 1/2" | 1/4" | 6236K308 | 000000 | ||
| 60 | ANSI | 3/4" | 34 | 8 9/16" | Finished | 1" | 1/4" | 1/8" | 6236K473 | 000000 | ||
| 60 | ANSI | 3/4" | 34 | 8 9/16" | Finished | 1 1/8" | 1/4" | 1/8" | 6236K475 | 000000 | ||
| 60 | ANSI | 3/4" | 34 | 8 9/16" | Finished | 1 3/16" | 1/4" | 1/8" | 6236K503 | 000000 | ||
| 60 | ANSI | 3/4" | 34 | 8 9/16" | Finished | 1 1/4" | 1/4" | 1/8" | 6236K504 | 000000 | ||
| 60 | ANSI | 3/4" | 34 | 8 9/16" | Finished | 1 3/8" | 5/16" | 5/32" | 6236K505 | 000000 | ||
| 60 | ANSI | 3/4" | 34 | 8 9/16" | Finished | 1 7/16" | 3/8" | 3/16" | 6236K506 | 000000 | ||
| 60 | ANSI | 3/4" | 34 | 8 9/16" | Finished | 1 1/2" | 3/8" | 3/16" | 6236K507 | 000000 | ||
| 60 | ANSI | 3/4" | 34 | 8 9/16" | Finished | 1 5/8" | 3/8" | 3/16" | 6236K508 | 000000 | ||
| 60 | ANSI | 3/4" | 34 | 8 9/16" | Finished | 1 3/4" | 3/8" | 3/16" | 6236K509 | 000000 | ||
| 60 | ANSI | 3/4" | 34 | 8 9/16" | Finished | 1 15/16" | 1/2" | 1/4" | 6236K511 | 000000 | ||
High-Torque HTD Timing Belt Pulleys
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Plain Bore |
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Bushing Bore |
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Curved teeth engage with the matching belt better than standard trapezoidal teeth, so these pulleys transmit about twice the torque. All are compatible with Gates PowerGrip HTD, Omega HP, and Carlisle RPP series.
Iron—Strong but best for dry environments since moisture will cause them to rust.
Corrosion-Resistant Stainless Steel—Stands up to wet environments and mild chemicals, such as the ammonia in cleaning solutions.
Plain Bore—Do it your way—machine the bore to your exact shaft size or add a set screw or keyway.
Bushing Bore—Quickly swap or service parts in tight spaces—no press-fitting or special tools required. Mount a bushing (sold separately) on your shaft and slide the pulley over it. As you tighten the included set screws, the bushing grips the shaft and draws it into the pulley, creating a final hold that is more secure than with set screws alone.
For Bushing | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Max. Belt Wd., mm | Pitch, mm | No. of Teeth | Bore Type | For Shaft Dia. | Type | Trade No. | Pitch Dia., mm | No. of Flanges | Hub Type | Each | |||
For H5M Trade Size | |||||||||||||
Iron | |||||||||||||
| 15 | 5 | 34 | Plain | 1/2" | — | — | 54.1 | 2 | Standard | 6497K82 | 000000 | ||
Corrosion-Resistant Stainless Steel | |||||||||||||
| 15 | 5 | 34 | Plain | 1/2" | — | — | 53 | 2 | Standard | 1230N12 | 000000 | ||
For H8M Trade Size | |||||||||||||
Iron | |||||||||||||
| 20 | 8 | 34 | Bushing | — | Quick Disconnect (QD) | SH | 86.6 | 2 | — | 6497K117 | 00000 | ||
| 30 | 8 | 34 | Bushing | — | Quick Disconnect (QD) | SH | 86.6 | 2 | — | 6497K217 | 00000 | ||
| 50 | 8 | 34 | Bushing | — | Quick Disconnect (QD) | SH | 86.6 | 2 | — | 6497K33 | 000000 | ||
Corrosion-Resistant Stainless Steel | |||||||||||||
| 20 | 8 | 34 | Bushing | — | Quick Disconnect (QD) | SH | 86.6 | 2 | — | 1230N19 | 000000 | ||
| 30 | 8 | 34 | Bushing | — | Quick Disconnect (QD) | SH | 86.6 | 2 | — | 1230N3 | 000000 | ||
| 50 | 8 | 34 | Bushing | — | Quick Disconnect (QD) | SH | 86.6 | 2 | — | 1230N35 | 000000 | ||
 |
Quick-Disconnect Bushing |
Bushing | |||||
|---|---|---|---|---|---|
Type | Trade No. | For Shaft Dia. | Each | ||
| Quick Disconnect (QD) | SH | 1/2" | 6086K211 | 000000 | |
| Quick Disconnect (QD) | SH | 5/8" | 6086K212 | 00000 | |
| Quick Disconnect (QD) | SH | 11/16" | 6086K226 | 00000 | |
| Quick Disconnect (QD) | SH | 3/4" | 6086K213 | 00000 | |
| Quick Disconnect (QD) | SH | 7/8" | 6086K214 | 00000 | |
| Quick Disconnect (QD) | SH | 15/16" | 6086K215 | 00000 | |
| Quick Disconnect (QD) | SH | 1" | 6086K216 | 00000 | |
| Quick Disconnect (QD) | SH | 1 1/16" | 6086K217 | 00000 | |
| Quick Disconnect (QD) | SH | 1 1/8" | 6086K218 | 00000 | |
| Quick Disconnect (QD) | SH | 1 3/16" | 6086K219 | 00000 | |
| Quick Disconnect (QD) | SH | 1 1/4" | 6086K221 | 00000 | |
| Quick Disconnect (QD) | SH | 1 5/16" | 6086K848 | 00000 | |
| Quick Disconnect (QD) | SH | 1 3/8" | 6086K222 | 00000 | |
| Quick Disconnect (QD) | SH | 1 7/16" | 6086K849 | 00000 | |
| Quick Disconnect (QD) | SH | 1 1/2" | 6086K223 | 00000 | |
| Quick Disconnect (QD) | SH | 1 5/8" | 6086K224 | 00000 | |
| Quick Disconnect (QD) | SH | 1 11/16" | 6086K225 | 00000 | |
| Quick Disconnect (QD) | SH | 22 mm | 2344K71 | 00000 | |
| Quick Disconnect (QD) | SH | 24 mm | 2344K11 | 00000 | |
| Quick Disconnect (QD) | SH | 25 mm | 2344K12 | 00000 | |
| Quick Disconnect (QD) | SH | 28 mm | 2344K13 | 00000 | |
| Quick Disconnect (QD) | SH | 30 mm | 2344K14 | 00000 | |
| Quick Disconnect (QD) | SH | 32 mm | 2344K15 | 00000 | |
| Quick Disconnect (QD) | SH | 35 mm | 2344K16 | 00000 | |
Metal Spur Gears
Gears
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20° 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.
Steel—Steel gears have hard, strong, and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals.
Hub, mm | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gear Module | No. of Teeth | Gear Pitch Dia., mm | OD, mm | Face Wd., mm | Dia. | Wd. | Bore Type | For Shaft Dia., mm | Tooth Heat Treatment | Material | Each | |||
20° Pressure Angle | ||||||||||||||
Steel | ||||||||||||||
| 1 | 34 | 34 | 36 | 10 | 26 | 10 | Round Bore | 10 | Not Hardened | Black-Oxide 1045 Carbon Steel | 2664N361 | 000000 | ||
Gear Racks
 |  |
20° Pressure Angle—Rectangular | 20° Pressure Angle—Round |
Gear Module | Lg., mm | Pitch Ht., mm | Ht., mm | Face Wd., mm | Dia., mm | Tooth Heat Treatment | Material | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
20° Pressure Angle—Rectangular | |||||||||||
Steel | |||||||||||
| 1 | 100 | 11 | 12 | 10 | — | Not Hardened | Black-Oxide 1045 Carbon Steel | 2485N217 | 000000 | ||
| 1 | 300 | 11 | 12 | 10 | — | Not Hardened | Black-Oxide 1045 Carbon Steel | 2485N218 | 00000 | ||
| 1 | 500 | 8.8 | 9.8 | 10 | — | Not Hardened | 1045 Carbon Steel | 2485N201 | 00000 | ||
| 1 | 1,000 | 8.8 | 9.8 | 10 | — | Not Hardened | 1045 Carbon Steel | 2485N202 | 000000 | ||
20° Pressure Angle—Round | |||||||||||
Steel | |||||||||||
| 1 | 500 | 9 | — | — | 10 | Not Hardened | Black-Oxide 1045 Carbon Steel | 2485N226 | 000000 | ||
Internal Gears
 |
Save space without losing power. Insert a standard spur gear inside one of these gears for a compact assembly that smoothly transmits 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.
Steel—Steel gears have strong and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals.
Precision High-Torque GT Timing Belt Pulleys
 |
Finished Bore |
 |
When precise synchronization is crucial, these pulleys minimize play (backlash). They’re often found in 3D printers, where accurate positioning is essential. Their curved teeth fit snugly with matching belts. Compared to pulleys with standard trapezoidal teeth, these pulleys transmit about three times more torque and run at higher speeds. All are compatible with Gates PowerGrip GT, 2GT, GT2, GT3, and GT4 series.
Corrosion-Resistant Aluminum—Won't rust in wet environments and one-third the weight of steel and iron. However, aluminum pulleys are not as strong as iron and steel.
Finished Bore—Mount these pulleys onto the shaft and secure with a set screw—no machining required.
For Max. Belt Wd., mm | Pitch, mm | No. of Teeth | Bore Type | For Shaft Dia. | Pitch Dia., mm | No. of Flanges | Hub Type | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
For 3MGT Trade Size | |||||||||||
Corrosion-Resistant Aluminum | |||||||||||
| 9 | 3 | 34 | Finished | 1/4" | 32.5 | 2 | Standard | 3764N136 | 000000 | ||
Timing Belt Pulleys
 |
Bushing Bore |
 |
Keep your drive system in sync. Trapezoidal teeth mesh with matching belts to synchronize motion. With the original tooth profile, these pulleys handle enough torque for most applications. If you need high torque or precise starts and stops, consider curved tooth profiles, such as GT and HTD pulleys.
Iron—Strong but best for dry environments since moisture will cause them to rust.
Bushing Bore—Quickly swap or service parts in tight spaces—no press-fitting or special tools required. Mount a bushing (sold separately) on your shaft and slide the pulley over it. As you tighten the included set screws, the bushing grips the shaft and draws it into the pulley, creating a final hold that is more secure than with set screws alone.
For Bushing | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
For Max. Belt Wd. | Pitch | No. of Teeth | Bore Type | Type | Trade No. | Pitch Dia. | No. of Flanges | Each | |||
For XXH Trade Size | |||||||||||
Iron | |||||||||||
| 4" | 1.25" | 34 | Bushing | Quick Disconnect (QD) | J | 13.528" | 2 | 5471N17 | 000000000 | ||
