About Gears
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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.
Carbon steel gears have hard, strong, and wear-resistant teeth. They’re best for heavy duty and high-torque applications, such as lifting equipment. However, these gears will rust when exposed to moisture or corrosive chemicals. Some gears have hardened teeth for additional wear resistance; gears with teeth that are not hardened can be hardened to fit your application.
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 | Keyway | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gear Pitch  | Number of Teeth | For Shaft Angle | Pressure Angle | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Mounting Distance | Teeth Heat Treatment | Dia. | Wd. | Wd. | Dp. | Set Screw Thread Size | Each | |
Round Bore—1117 Carbon Steel | |||||||||||||||||
| 48 | 18 | 90° | 20° | 3/8" | 0.4" | 0.08" | 0.286" | 1/8" | 0.406" | Not Hardened | 0.31" | 0.16" | __ | __ | __ | 0000000 | 000000 |
| 20 | 12 | 90° | 20° | 0.6" | 0.67" | 0.13" | 0.489" | 1/4" | 0.672" | Not Hardened | 0.5" | 0.31" | __ | __ | __ | 0000000 | 00000 |
| 16 | 12 | 90° | 20° | 3/4" | 0.84" | 0.16" | 0.583" | 5/16" | 0.812" | Not Hardened | 0.62" | 0.38" | __ | __ | __ | 0000000 | 00000 |
Round Bore—1144 Carbon Steel | |||||||||||||||||
| 24 | 24 | 90° | 20° | 1" | 1.06" | 0.2" | 0.563" | 1/4" | 0.906" | Not Hardened | 0.625" | 0.281" | __ | __ | __ | 0000000 | 00000 |
| 20 | 20 | 90° | 20° | 1" | 1.07" | 0.23" | 0.813" | 3/8" | 1.125" | Not Hardened | 0.75" | 0.5" | __ | __ | __ | 0000000 | 00000 |
| 20 | 25 | 90° | 20° | 1 1/4" | 1.32" | 1/4" | 0.75" | 3/8" | 1.188" | Not Hardened | 1" | 0.375" | __ | __ | __ | 0000000 | 00000 |
| 16 | 16 | 90° | 20° | 1" | 1.09" | 0.22" | 0.75" | 3/8" | 1.063" | Not Hardened | 0.75" | 0.438" | __ | __ | __ | 0000000 | 00000 |
| 16 | 20 | 90° | 20° | 1 1/4" | 1.34" | 0.27" | 0.844" | 7/16" | 1.25" | Not Hardened | 1" | 0.5" | __ | __ | __ | 0000000 | 00000 |
| 16 | 24 | 90° | 20° | 1 1/2" | 1.59" | 0.31" | 0.875" | 1/2" | 1.375" | Not Hardened | 1" | 0.5" | __ | __ | __ | 0000000 | 00000 |
| 12 | 15 | 90° | 20° | 1 1/4" | 1.37" | 0.27" | 0.859" | 3/8" | 1.25" | Not Hardened | 1" | 0.5" | __ | __ | __ | 0000000 | 00000 |
| 12 | 15 | 90° | 20° | 1 1/4" | 1.37" | 0.27" | 0.859" | 1/2" | 1.25" | Not Hardened | 1" | 0.5" | __ | __ | __ | 0000000 | 00000 |
| 12 | 18 | 90° | 20° | 1 1/2" | 1.62" | 0.32" | 1.016" | 1/2" | 1.5" | Not Hardened | 1.25" | 0.625" | __ | __ | __ | 0000000 | 00000 |
| 12 | 18 | 90° | 20° | 1 1/2" | 1.62" | 0.32" | 1.016" | 5/8" | 1.5" | Not Hardened | 1.25" | 0.625" | __ | __ | __ | 0000000 | 00000 |
| 12 | 21 | 90° | 20° | 1 3/4" | 1.87" | 0.39" | 1.188" | 1/2" | 1.75" | Not Hardened | 1.375" | 0.688" | __ | __ | __ | 0000000 | 00000 |
| 12 | 21 | 90° | 20° | 1 3/4" | 1.87" | 0.39" | 1.188" | 5/8" | 1.75" | Not Hardened | 1.375" | 0.688" | __ | __ | __ | 0000000 | 00000 |
| 12 | 24 | 90° | 20° | 2" | 2.12" | 0.43" | 1.219" | 1/2" | 1.875" | Not Hardened | 1.5" | 0.688" | __ | __ | __ | 0000000 | 00000 |
| 12 | 30 | 90° | 20° | 2 1/2" | 2.62" | 0.54" | 1.484" | 5/8" | 2.313" | Not Hardened | 1.75" | 0.844" | __ | __ | __ | 0000000 | 00000 |
| 10 | 20 | 90° | 20° | 2" | 2.14" | 0.44" | 1.359" | 1/2" | 2" | Not Hardened | 1.625" | 0.813" | __ | __ | __ | 0000000 | 00000 |
| 10 | 20 | 90° | 20° | 2" | 2.14" | 0.44" | 1.359" | 5/8" | 2" | Not Hardened | 1.625" | 0.813" | __ | __ | __ | 0000000 | 00000 |
| 10 | 20 | 90° | 20° | 2" | 2.14" | 0.44" | 1.359" | 3/4" | 2" | Not Hardened | 1.625" | 0.813" | __ | __ | __ | 0000000 | 00000 |
| 10 | 25 | 90° | 20° | 2 1/2" | 2.64" | 0.55" | 1.625" | 3/4" | 2.438" | Not Hardened | 2" | 0.938" | __ | __ | __ | 0000000 | 000000 |
| 10 | 25 | 90° | 20° | 2 1/2" | 2.64" | 0.55" | 1.625" | 1" | 2.438" | Not Hardened | 2" | 0.938" | __ | __ | __ | 0000000 | 000000 |
Keyed Bore with Set Screw—1144 Carbon Steel | |||||||||||||||||
| 16 | 16 | 90° | 20° | 1" | 1.09" | 0.22" | 0.75" | 3/8" | 1.063" | Hardened | 0.75" | 0.438" | 0.094" | 0.047" | 10-24 | 0000000 | 00000 |
| 16 | 24 | 90° | 20° | 1 1/2" | 1.59" | 0.31" | 0.875" | 1/2" | 1.375" | Hardened | 1" | 0.5" | 0.125" | 0.063" | 10-24 | 0000000 | 00000 |
| 12 | 15 | 90° | 20° | 1 1/4" | 1.37" | 0.27" | 0.859" | 1/2" | 1.25" | Hardened | 1" | 0.5" | 0.125" | 0.063" | 10-24 | 0000000 | 00000 |
| 12 | 18 | 90° | 20° | 1 1/2" | 1.62" | 0.32" | 1.016" | 5/8" | 1.5" | Hardened | 1.25" | 0.625" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 00000 |
| 12 | 21 | 90° | 20° | 1 3/4" | 1.87" | 0.39" | 1.188" | 5/8" | 1.75" | Hardened | 1.375" | 0.688" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 00000 |
| 12 | 30 | 90° | 20° | 2 1/2" | 2.62" | 0.54" | 1.484" | 5/8" | 2.313" | Hardened | 1.75" | 0.844" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 000000 |
| 10 | 20 | 90° | 20° | 2" | 2.14" | 0.44" | 1.359" | 1/2" | 2" | Hardened | 1.625" | 0.813" | 0.125" | 0.063" | 10-24 | 0000000 | 00000 |
| 10 | 20 | 90° | 20° | 2" | 2.14" | 0.44" | 1.359" | 5/8" | 2" | Hardened | 1.625" | 0.813" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 00000 |
| 10 | 20 | 90° | 20° | 2" | 2.14" | 0.44" | 1.359" | 3/4" | 2" | Hardened | 1.625" | 0.813" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 00000 |
| 10 | 25 | 90° | 20° | 2 1/2" | 2.64" | 0.55" | 1.625" | 3/4" | 2.438" | Hardened | 2" | 0.938" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 000000 |
| 10 | 25 | 90° | 20° | 2 1/2" | 2.64" | 0.55" | 1.625" | 1" | 2.438" | Hardened | 2" | 0.938" | 0.25" | 0.125" | 5/16"-18 | 0000000 | 000000 |
| 8 | 24 | 90° | 20° | 3" | 3.18" | 0.64" | 1.766" | 1" | 2.75" | Hardened | 2.5" | 1" | 0.25" | 0.125" | 5/16"-18 | 0000000 | 000000 |
| 8 | 28 | 90° | 20° | 3 1/2" | 3.68" | 3/4" | 2.094" | 1" | 3.25" | Hardened | 2.5" | 1.25" | 0.25" | 0.125" | 5/16"-18 | 0000000 | 000000 |
| 6 | 24 | 90° | 20° | 4" | 4.24" | 0.86" | 2.313" | 1 1/2" | 3.625" | Hardened | 3" | 1.313" | 0.375" | 0.188" | 3/8"-16 | 0000000 | 000000 |
Hub | Keyway | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | Wd., mm | Dp., mm | Set Screw Thread Size | Each | |
Round Bore—1045 Carbon Steel | |||||||||||||||||
| 1.5 | 20 | 45° | 20° | 30 | 32.8 | 11 | 19.3 | 8 | 45 | Not Hardened | 25 | 7.8 | __ | __ | __ | 0000000 | 000000 |
| 1.5 | 20 | 60° | 20° | 30 | 32.6 | 9 | 22.3 | 8 | 40 | Not Hardened | 25 | 12.6 | __ | __ | __ | 0000000 | 00000 |
| 1.5 | 20 | 120° | 20° | 30 | 31.5 | 5 | 20.7 | 8 | 26 | Not Hardened | 26 | 13.9 | __ | __ | __ | 0000000 | 00000 |
| 2.5 | 20 | 45° | 20° | 50 | 54.6 | 18 | 31.9 | 12 | 75 | Not Hardened | 40 | 12.6 | __ | __ | __ | 0000000 | 00000 |
Round Bore with Set Screw—1045 Carbon Steel | |||||||||||||||||
| 1 | 20 | 90° | 20° | 20 | 21.4 | 5 | 14 | 8 | 20 | Hardened | 16 | 8 | __ | __ | M4 | 000000 | 00000 |
| 1 | 20 | 90° | 20° | 20 | 21.4 | 5 | 14 | 10 | 20 | Hardened | 16 | 8 | __ | __ | M4 | 0000000 | 00000 |
| 1.5 | 20 | 90° | 20° | 30 | 32.1 | 8 | 21.1 | 10 | 30 | Hardened | 26 | 13 | __ | __ | M4 | 000000 | 00000 |
Round Bore with Set Screw—303 Stainless Steel | |||||||||||||||||
| 1 | 20 | 90° | 20° | 20 | 21.4 | 5 | 14 | 6 | 20 | Not Hardened | 16 | 8 | __ | __ | M4 | 0000000 | 00000 |
| 1 | 25 | 90° | 20° | 25 | 26.4 | 6 | 15.2 | 6 | 23 | Not Hardened | 20 | 8 | __ | __ | M4 | 0000000 | 00000 |
| 1.5 | 20 | 90° | 20° | 30 | 32.1 | 8 | 21.2 | 8 | 30 | Not Hardened | 26 | 13 | __ | __ | M4 | 0000000 | 00000 |
| 1.5 | 25 | 90° | 20° | 38 | 39.6 | 9 | 22.3 | 10 | 34 | Not Hardened | 30 | 11.5 | __ | __ | M4 | 0000000 | 00000 |
Keyed Bore with Set Screw—1045 Carbon Steel | |||||||||||||||||
| 1 | 30 | 90° | 20° | 30 | 31.4 | 6 | 17.7 | 12 | 28 | Hardened | 26 | 10 | 4 | 1.8 | M5 | 000000 | 00000 |
| 1.5 | 20 | 90° | 20° | 30 | 32.1 | 8 | 21.2 | 12 | 30 | Hardened | 26 | 13 | 4 | 1.8 | M5 | 0000000 | 00000 |
| 1.5 | 30 | 90° | 20° | 45 | 47.1 | 10 | 28.2 | 15 | 43 | Hardened | 36 | 16 | 5 | 2.3 | M5 | 000000 | 00000 |
| 2 | 20 | 90° | 20° | 40 | 42.8 | 10 | 24.9 | 15 | 37 | Hardened | 34 | 14 | 5 | 2.3 | M5 | 000000 | 00000 |
| 2 | 25 | 90° | 20° | 50 | 52.8 | 12 | 24.3 | 15 | 40 | Hardened | 40 | 10 | 5 | 2.3 | M5 | 0000000 | 00000 |
| 2 | 30 | 90° | 20° | 60 | 62.8 | 12 | 29.4 | 15 | 50 | Hardened | 45 | 12.5 | 5 | 2.3 | M5 | 0000000 | 00000 |
| 2 | 30 | 90° | 20° | 60 | 62.8 | 12 | 29.4 | 20 | 50 | Hardened | 45 | 12.5 | 6 | 2.8 | M6 | 000000 | 00000 |
Keyed Bore with Set Screw—303 Stainless Steel | |||||||||||||||||
| 2 | 20 | 90° | 20° | 40 | 42.8 | 10 | 24.9 | 12 | 37 | Not Hardened | 34 | 14 | 4 | 1.8 | M4 | 0000000 | 00000 |
Metal Bevel Gears
A type of miter gear where one gear (sometimes called a pinion) is smaller than the other, bevel gears provide right-angle speed reduction at speed ratios ranging from 2:1 to 5:1. All are carbon steel for strength; they're compatible with plastic bevel gears. Teeth are not hardened so you can harden them to fit your application. Hardening a gear’s teeth increases its wear resistance.
A complete set consists of a gear and pinion (sold separately). For a gear and pinion to mesh correctly, they must have the same pressure angle, pitch/module, and face width. Shaft-mounted pinions come already securely fastened to a shaft.
Speed ratio is the ratio by which shaft speed is reduced when transferring motion from pinion to gear. To increase shaft speed, transfer motion from gear to pinion. Changing shaft speed also changes torque: as speed decreases, torque increases.
For technical drawings and 3-D models, click on a part number.
Hub | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Face Wd. | Gear Pitch | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia. | OD | Overall Wd. | For Shaft Dia. | Mounting Distance (A) | Dia. | Wd. | Material | Each | |
Round Bore | ||||||||||||||
| 0.19" | 16 | 20° | 2:1 | 24 | 1 1/2" | 1.54" | 0.741" | 1/2" | 1" | 1" | 0.448" | 1144 Carbon Steel | 0000000 | 000000 |
| 0.35" | 16 | 20° | 2:1 | 32 | 2" | 2.03" | 0.871" | 1/2" | 1.188" | 1.125" | 0.5" | 1144 Carbon Steel | 0000000 | 00000 |
| 0.42" | 16 | 20° | 3:1 | 48 | 3" | 3.02" | 0.973" | 5/8" | 1.313" | 1.5" | 0.563" | 1144 Carbon Steel | 0000000 | 000000 |
| 0.48" | 16 | 20° | 4:1 | 64 | 4" | 4.02" | 1.019" | 5/8" | 1.375" | 2.25" | 0.563" | 1144 Carbon Steel | 0000000 | 000000 |
| 0.71" | 10 | 20° | 2:1 | 40 | 4" | 4.06" | 1.857" | 7/8" | 2.5" | 3" | 1.188" | 1144 Carbon Steel | 0000000 | 000000 |
| 0.78" | 10 | 20° | 3:1 | 60 | 6" | 6.04" | 2.04" | 1" | 2.75" | 3" | 1.375" | 1144 Carbon Steel | 0000000 | 000000 |
Hub | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Face Wd., mm | Module | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Overall Wd., mm | For Shaft Dia., mm | Mounting Distance (A), mm | Dia., mm | Wd., mm | Material | Each | |
Round Bore | ||||||||||||||
| 6 | 1 | 20° | 2:1 | 40 | 40 | 41 | 15 | 8 | 22 | 25 | 8 | Black-Oxide 1045 Carbon Steel | 00000000 | 000000 |
| 6 | 1 | 20° | 3:1 | 45 | 45 | 45 | 12 | 8 | 17 | 30 | 5 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 8 | 1.25 | 20° | 2:1 | 40 | 50 | 51 | 19 | 10 | 27 | 32 | 10 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 8 | 1.5 | 20° | 2:1 | 30 | 45 | 46 | 18 | 8 | 25 | 25 | 9 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 10 | 1.5 | 20° | 3:1 | 45 | 68 | 68 | 20 | 10 | 28 | 36 | 11 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 11 | 1.5 | 20° | 5:2 | 45 | 68 | 68 | 21 | 10 | 30 | 36 | 10 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 11 | 2 | 20° | 2:1 | 30 | 60 | 61 | 22 | 10 | 31 | 30 | 10 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 11 | 2 | 20° | 3:2 | 30 | 60 | 62 | 27 | 10 | 40 | 35 | 15 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 15 | 2 | 20° | 2:1 | 40 | 80 | 81 | 32 | 12 | 45 | 40 | 18 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 15 | 2.5 | 20° | 2:1 | 30 | 75 | 76 | 29 | 15 | 40 | 40 | 15 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 15 | 2.5 | 20° | 3:2 | 30 | 75 | 77 | 34 | 15 | 50 | 45 | 18 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 20 | 2.5 | 20° | 5:1 | 60 | 150 | 151 | 40 | 20 | 50 | 70 | 20 | Black-Oxide 1045 Carbon Steel | 00000000 | 000000 |
Hub | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Face Wd. | Gear Pitch | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia. | OD | Overall Wd. | For Shaft Dia. | Mounting Distance (B) | Dia. | Wd. | Material | Each | |
Round Bore | ||||||||||||||
| 0.19" | 16 | 20° | 2:1 | 12 | 3/4" | 0.9" | 0.583" | 3/8" | 1.125" | 0.656" | 0.344" | 1144 Carbon Steel | 0000000 | 000000 |
| 0.35" | 16 | 20° | 2:1 | 16 | 1" | 1.15" | 0.842" | 3/8" | 1.5" | 0.813" | 0.453" | 1144 Carbon Steel | 0000000 | 00000 |
| 0.42" | 16 | 20° | 3:1 | 16 | 1" | 1.17" | 0.927" | 7/16" | 2" | 0.875" | 0.474" | 1144 Carbon Steel | 0000000 | 00000 |
| 0.48" | 16 | 20° | 4:1 | 16 | 1" | 1.17" | 0.989" | 1/2" | 2.5" | 0.813" | 0.438" | 1144 Carbon Steel | 0000000 | 00000 |
| 0.71" | 10 | 20° | 2:1 | 20 | 2" | 2.24" | 1.802" | 3/4" | 3.125" | 1.75" | 1.062" | 1144 Carbon Steel | 0000000 | 000000 |
| 0.78" | 10 | 20° | 3:1 | 20 | 2" | 2.27" | 2.161" | 7/8" | 4.375" | 1.75" | 1.333" | 1144 Carbon Steel | 0000000 | 000000 |
Hub | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Face Wd., mm | Module | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Overall Wd., mm | For Shaft Dia., mm | Mounting Distance (B), mm | Dia., mm | Wd., mm | Material | Each | |
Round Bore | ||||||||||||||
| 6 | 1 | 20° | 2:1 | 20 | 20 | 22 | 14 | 6 | 28 | 16 | 7 | Black-Oxide 1045 Carbon Steel | 00000000 | 000000 |
| 6 | 1 | 20° | 3:1 | 15 | 15 | 18 | 13 | 6 | 29 | 12 | 6 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 8 | 1.25 | 20° | 2:1 | 20 | 25 | 28 | 19 | 8 | 36 | 22 | 10 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 8 | 1.5 | 20° | 2:1 | 15 | 23 | 26 | 17 | 6 | 32 | 16 | 8 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 10 | 1.5 | 20° | 3:1 | 15 | 23 | 27 | 23 | 8 | 47 | 18 | 13 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 11 | 1.5 | 20° | 5:2 | 18 | 27 | 31 | 22 | 8 | 45 | 23 | 10 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 11 | 2 | 20° | 2:1 | 15 | 30 | 35 | 21 | 8 | 40 | 22 | 8 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 11 | 2 | 20° | 3:2 | 20 | 40 | 44 | 25 | 10 | 45 | 30 | 12 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 15 | 2 | 20° | 2:1 | 20 | 40 | 45 | 34 | 12 | 60 | 32 | 18 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 15 | 2.5 | 20° | 2:1 | 15 | 38 | 44 | 32 | 12 | 55 | 30 | 16 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
| 15 | 2.5 | 20° | 3:2 | 20 | 50 | 55 | 31 | 12 | 55 | 35 | 13 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
Shaft | Hub | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Face Wd., mm | Module | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Overall Wd., mm | Dia., mm | Lg., mm | Mounting Distance (B), mm | Dia., mm | Wd., mm | Material | Each | |
| 20 | 2.5 | 20° | 5:1 | 12 | 30 | 37 | 143 | 20.2 | 115 | 83 | 25 | 8 | Black-Oxide 1045 Carbon Steel | 00000000 | 000000 |
High-Power Metal Bevel Gears
Made from carbon steel with spiral teeth, these gears handle heavier loads at higher speeds than bevel gears with straight teeth because their teeth stay in contact longer. Their teeth engage gradually, which reduces vibration and noise, and they’re hardened for extra wear resistance. Use these gears to transmit motion at a right angle while changing shaft speed and torque. They reduce speeds at ratios of 2:1, 3:1, or 4:1. Customize their machinable bore to fit them on a variety of shafts. They’re also known as spiral bevel gears.
A complete set consists of a gear and pinion (sold separately). The gear is larger than the pinion, but for them to mesh correctly, they must have the same pressure angle, module, and face width.
Speed ratio is the ratio by which shaft speed is reduced when transferring motion from pinion to gear. To increase shaft speed, transfer motion from gear to pinion. Changing shaft speed also changes torque: as speed decreases, torque increases.
For technical drawings and 3-D models, click on a part number.
Hub | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Face Width, mm | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Overall Width, mm | For Shaft Diameter, mm | Mounting Distance (A), mm | Material | Diameter, mm | Width, mm | Each | |
Machinable Round Bore | |||||||||||||
| 6 | 20° | 2:1 | 40 | 40 | 40.52 | 15 | 8-18 | 22 | Black-Oxide 1045 Carbon Steel | 25 | 8 | 0000000 | 000000 |
| 10 | 20° | 2:1 | 40 | 60 | 60.75 | 24.9 | 10-25 | 35 | Black-Oxide 1045 Carbon Steel | 38 | 15 | 0000000 | 00000 |
| 12 | 20° | 4:1 | 60 | 90 | 90.36 | 24.1 | 12-45 | 32 | Black-Oxide 1045 Carbon Steel | 60 | 12 | 0000000 | 000000 |
| 15 | 20° | 3:1 | 45 | 90 | 90.67 | 30.3 | 12-30 | 40 | Black-Oxide 1045 Carbon Steel | 40 | 17 | 0000000 | 000000 |
Hub | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Face Width, mm | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Overall Width, mm | For Shaft Diameter, mm | Mounting Distance (B), mm | Material | Diameter, mm | Width, mm | Each | |
Machinable Round Bore | |||||||||||||
| 6 | 20° | 2:1 | 20 | 20 | 22.08 | 13.7 | 6-9 | 28 | Black-Oxide 1045 Carbon Steel | 16 | 7 | 0000000 | 000000 |
| 10 | 20° | 2:1 | 20 | 30 | 33.08 | 25.5 | 8-15 | 46 | Black-Oxide 1045 Carbon Steel | 25 | 15 | 0000000 | 00000 |
| 12 | 20° | 4:1 | 15 | 23 | 26.09 | 23 | 8-10 | 56 | Black-Oxide 1045 Carbon Steel | 18 | 10 | 0000000 | 00000 |
| 15 | 20° | 3:1 | 15 | 30 | 34.78 | 29.7 | 10-14 | 60 | Black-Oxide 1045 Carbon Steel | 24 | 14 | 0000000 | 00000 |
High-Power Metal Miter Gears
Also known as spiral miter gears, these gears have curved teeth that stay in contact longer than straight teeth so they handle heavier loads at higher speeds. They run quieter than standard miter gears because the teeth gradually engage. Use them to transmit motion at a right angle while maintaining shaft speed and torque. Gears are carbon steel for strength. Teeth are hardened for wear resistance.
Gears must be identical in order to mesh correctly; they're sold as a pair.
For technical drawings and 3-D models, click on a part number.
Hub | Keyway | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gear Pitch | Number of Teeth | Pressure Angle | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Mounting Distance | Material | Dia. | Wd. | Wd. | Dp. | Set Screw Thread Size | Pair | |
Keyed Bore with Set Screw | ||||||||||||||||
| 18 | 18 | 20° | 1" | 1.07" | 0.22" | 0.74" | 3/8" | 1.062" | 1117 Carbon Steel | 0.75" | 0.44" | 0.094" | 0.047" | 10-32 | 000000 | 0000000 |
| 12 | 15 | 20° | 1 1/4" | 1.36" | 0.3" | 0.86" | 1/2" | 1.25" | 1117 Carbon Steel | 1" | 0.5" | 0.125" | 0.063" | 1/4"-20 | 000000 | 000000 |
| 12 | 18 | 20° | 1 1/2" | 1.61" | 0.34" | 1.02" | 5/8" | 1.5" | 1117 Carbon Steel | 1.25" | 0.56" | 0.188" | 0.094" | 5/16"-18 | 000000 | 000000 |
| 10 | 20 | 20° | 2" | 2.13" | 0.47" | 1.36" | 3/4" | 2" | 1117 Carbon Steel | 1.625" | 0.78" | 0.188" | 0.094" | 5/16"-18 | 000000 | 000000 |
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.
Hub | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gear Pitch | Number of Teeth | Pressure Angle | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Mounting Distance | Material | Fabrication | Color | Dia. | Wd. | Each | |
Round Bore | |||||||||||||||
| 48 | 18 | 20° | 3/8" | 0.4" | 0.05" | 0.264" | 1/8" | 0.406" | Nylon Plastic | Molded | White | 0.328" | 0.188" | 0000000 | 000000 |
| 48 | 24 | 20° | 1/2" | 0.53" | 0.09" | 0.375" | 3/16" | 0.531" | Nylon Plastic | Molded | White | 0.375" | 0.25" | 0000000 | 00000 |
| 32 | 16 | 20° | 1/2" | 0.55" | 0.11" | 0.344" | 3/16" | 0.5" | Nylon Plastic | Molded | White | 0.406" | 0.188" | 0000000 | 00000 |
| 32 | 24 | 20° | 3/4" | 0.8" | 0.16" | 0.406" | 3/16" | 0.688" | Nylon Plastic | Molded | White | 0.5" | 0.188" | 0000000 | 00000 |
| 24 | 24 | 20° | 1" | 1.05" | 0.26" | 0.563" | 1/4" | 0.875" | Nylon Plastic | Molded | White | 0.625" | 0.188" | 0000000 | 00000 |
| 24 | 30 | 20° | 1 1/4" | 1.31" | 0.19" | 0.578" | 1/4" | 1.031" | Nylon Plastic | Molded | White | 0.625" | 0.313" | 0000000 | 00000 |
| 24 | 36 | 20° | 1 1/2" | 1.56" | 0.21" | 0.609" | 5/16" | 1.188" | Nylon Plastic | Molded | White | 0.688" | 0.313" | 0000000 | 00000 |
| 16 | 16 | 20° | 1" | 1.09" | 0.22" | 0.75" | 3/8" | 1.063" | Nylon Plastic | Molded | White | 0.75" | 0.438" | 0000000 | 00000 |
Hub | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Module | Number of Teeth | Pressure Angle | Gear Pitch Dia. | OD, mm | Face Wd., mm | Overall Wd., mm | For Shaft Dia., mm | Mounting Distance, mm | Material | Fabrication | Color | Dia., mm | Wd., mm | Each | |
Round Bore | |||||||||||||||
| 0.5 | 20 | 20° | 10mm | 10.7 | 2.5 | 8 | 3 | 11 | Acetal Plastic | Molded | White | 8 | 4 | 000000 | 00000 |
| 0.8 | 20 | 20° | 16mm | 17.1 | 3.5 | 10.8 | 5 | 16 | Acetal Plastic | Molded | White | 12 | 5 | 000000 | 0000 |
| 1 | 20 | 20° | 20mm | 21.4 | 4.5 | 14.6 | 6 | 21 | Acetal Plastic | Molded | White | 16 | 7 | 000000 | 0000 |
| 1 | 20 | 20° | 20mm | 21.4 | 5 | 14 | 6 | 20 | Nylon Plastic | Molded | Blue | 16 | 8 | 00000000 | 00000 |
| 1 | 25 | 20° | 25mm | 26.4 | 6 | 15 | 6 | 23 | Nylon Plastic | Molded | Blue | 20 | 8 | 00000000 | 00000 |
| 1.5 | 20 | 20° | 30mm | 32.1 | 7 | 20.6 | 8 | 30 | Acetal Plastic | Molded | White | 20 | 10 | 000000 | 0000 |
| 2 | 20 | 20° | 40mm | 42.8 | 10 | 25 | 10 | 37 | Nylon Plastic | Molded | Blue | 34 | 14 | 00000000 | 00000 |
Plastic Bevel Gears
Reduce speeds where noise, corrosion, and frequent lubrication are a concern. Compared to metal gears, these nylon gears run more quietly, won't rust, and don't need to be lubricated. Because they’re self-lubricating, these bevel gears are commonly used in food machinery. They should not, however, come in direct contact with food or chemicals that will come in contact with food.
A complete set consists of a gear and pinion (sold separately). For a gear and pinion to mesh correctly, they must have the same pressure angle, module, and face width. Plastic pinions can also be mated with metal gears, and plastic gears with metal pinions.
Speed ratio is the ratio by which shaft speed is reduced when transferring motion from pinion to gear. To increase shaft speed, transfer motion from gear to pinion. Changing shaft speed also changes torque: as speed decreases, torque increases.
For technical drawings and 3-D models, click on a part number.
Hub | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Face Width, mm | Module | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Overall Width, mm | For Shaft Diameter, mm | Mounting Distance (A), mm | Material | Fabrication | Color | Diameter, mm | Width, mm | Each | |
Round Bore | ||||||||||||||||
| 6 | 1 | 20° | 2:1 | 40 | 40 | 40.6 | 15 | 8 | 22 | Nylon Plastic | Molded | Blue | 25 | 8 | 00000000 | 000000 |
| 8 | 1.25 | 20° | 2:1 | 40 | 50 | 50.7 | 19 | 10 | 27 | Nylon Plastic | Molded | Blue | 32 | 10 | 00000000 | 00000 |
Hub | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Face Width, mm | Module | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Overall Width, mm | For Shaft Diameter, mm | Mounting Distance (B), mm | Material | Fabrication | Color | Diameter, mm | Width, mm | Each | |
Round Bore | ||||||||||||||||
| 6 | 1 | 20° | 2:1 | 20 | 20 | 22.4 | 14 | 6 | 28 | Nylon Plastic | Molded | Blue | 16 | 7 | 00000000 | 000000 |
| 8 | 1.25 | 20° | 2:1 | 20 | 25 | 28 | 19 | 8 | 36 | Nylon Plastic | Molded | Blue | 22 | 10 | 00000000 | 00000 |