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Product Specifications:
| Item | Gear |
| Bore Size | 1.38" |
| Diametral Pitch | 8 |
| Face Width | 1 1/4" |
| Hub Dia. | 0" |
| Kwy/setscrew/other | W/Double Kwy Only |
| Material | Steel |
| Max. Torque | 499 lbs.-in. @ 1200 RPM |
| No. Of Teeth | 21 |
| Outside Dia. | 2.88" |
| Pitch Dia. | 2.63" |
| Product Datasheet | boston-gear-g101.pdf |
| Torque | 499.0 lbs.-in. @1200 RPM |
Shipping Info:
| Ship weight (kg) | 0.54 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 2.54 |
| Ship width (cm) | 2.54 |
| Country of Origin | US |
Documentation:
Product Variants
| Product | Model | Pitch Dia. | No. Of Teeth | Diametral Pitch | Torque | Max. Torque | Material | Face Width | Pressure Angle | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
GH20 | 2 1/2" | 20 | 8" | - | - | Steel | 1 1/4" | 14.5° | €220.13 | |
![]() |
GH22 | 2.75" | 22 | 8 | 514.3 lbs.-in. @1200 RPM | 514.3 lbs.-in. @ 1200 RPM | Steel | 1 1/4" | - | €245.37 | |
![]() |
GH23 | 2 7/8" | 23 | 8" | - | - | Steel | 1 1/4" | 14.5° | €269.60 | |
![]() |
GH24 | 3" | 24 | 8" | - | - | Steel | 1 1/4" | 14.5° | €266.46 |
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BOSTON GEAR GH21 Change Gear, 8 Diametral Pitch, 14 1/2 Deg. Pressure Angle, 21 Teeth, Steel
€235.97 /unit




