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Product Specifications:
| Item | Gear |
| Bore Dia. | 5/8" |
| Bushing Series | GA Series |
| Diametral Pitch | 20 |
| Face Width | 3/8" |
| Hardened Teeth | Without Hardened Teeth |
| Hub Dia. | 1.38" |
| Keyway | Double Keyway 180° Apart |
| Kwy/setscrew/other | With Double Kwy Only |
| Length Through Bore | 1" |
| Material | Cast Iron |
| Max. Rated Torque | 34.1 N-m @ 1800 RPM |
| Max. Torque | 34.1 lbs.-in. @ 1800 RPM |
| No. Of Teeth | 52 |
| Outside Dia. | 2.7" |
| Pitch Dia. | 2.6" |
| Pressure Angle | 14.5° |
| Product Datasheet | boston-gear-g101.pdf |
| Torque @ 1200 Rpm | 77.6 lbs.-in. |
| Torque @ 1800 Rpm | 59.5 lbs.-in. |
| Torque @ 200 Rpm | 133 lbs.-in. |
| Torque @ 300 Rpm | 143 lbs.-in. |
| Torque @ 600 Rpm | 112 lbs.-in. |
| Torque @ 900 Rpm | 91.6 lbs.-in. |
Shipping Info:
| Ship weight (kg) | 0.19 |
| 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 | Hub Dia. | Diametral Pitch | Type | Kwy/setscrew/other | Length Through Bore | Max. Torque | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
GA51B | 2.55" | 51 | 1.38" | 20" | Plain | With Double Keyway Only | - | - | €156.27 | |
![]() |
GA53B | 2.65" | 53 | 1.38" | 20" | Plain | With Double Keyway Only | - | - | €161.10 | |
![]() |
GA54B | 2.7" | 54 | 1.38" | 20" | Plain | With Double Keyway Only | - | - | €164.12 | |
![]() |
GA55B | 2 3/4" | 55 | 1.38" | 20" | Plain | With Double Keyway Only | - | - | €161.27 | |
![]() |
GA56B | 2 4/5" | 56 | 1.38" | 20" | Plain | With Double Keyway Only | - | - | €161.27 | |
![]() |
GA57B | 2.85" | 57 | 1.38" | 20" | Plain | With Double Keyway Only | - | - | €170.16 | |
![]() |
GA58B | 2.9" | 58 | 1.38" | 20" | Plain | With Double Keyway Only | - | - | €170.16 |
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Contact us
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BOSTON GEAR GA52B Change Gear, 20 Diametral Pitch, 14 1/2 Deg. Pressure Angle, 52 Teeth, Cast Iron
€161.10 /unit







