Custom Round Spur Gearboxes
Compact round spur gearboxes for economical inline speed reduction where moderate backlash is acceptable. SGMADA models cover 25–50 mm diameters, 2–8 gear stages, and ratios from 7.2:1 to 3,532:1 for pumps, conveyors, valve actuators, vending equipment, and general automation.
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SG37A Spur Gearbox - Round
MSRP $5.99
- Gear Ratio: 10 - 2,430 :1
- Max Continuous Torque: 1 - 6 gf·cm
- Breaking Torque: 3 - 18 gf·cm
- Gearbox Efficiency: 48 - 81 %
- Gearbox Weight: 64 - 96 g
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SG37B Spur Gearbox - Round
MSRP $5.99
- Gear Ratio: 10 - 2,430 :1
- Max Continuous Torque: 1 - 6 gf·cm
- Breaking Torque: 3 - 18 gf·cm
- Gearbox Efficiency: 48 - 81 %
- Gearbox Weight: 64 - 96 g
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RG50A Spur Gearbox - Round
MSRP $10.99
- Gear Ratio: 7.2 - 3,415 :1
- Max Continuous Torque: 10 - 30 gf·cm
- Breaking Torque: 30 - 75 gf·cm
- Gearbox Efficiency: 53 - 81 %
- Gearbox Weight: 126 g
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RG50B Spur Gearbox - Round
MSRP $10.99
- Gear Ratio: 7.5 - 3,532 :1
- Max Continuous Torque: 10 - 30 gf·cm
- Breaking Torque: 30 - 75 gf·cm
- Gearbox Efficiency: 53 - 81 %
- Gearbox Weight: 126 g
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SR28 Spur Gearbox - Round
MSRP $5.49
- Gear Ratio: 8 - 108 :1
- Max Continuous Torque: 0.5 - 1.2 gf·cm
- Breaking Torque: 1.5 - 3.6 gf·cm
- Gearbox Efficiency: 59 - 81 %
- Gearbox Weight: 33 - 34 g