SMR Series Shaft Mounted Gear Reducers
SMR Series Shaft Mounted Gearboxes
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SMR Series Shaft Mounted Gearbox

  • Rated Power: 0.29kW~134kW
  • Gear Profile: Involute Helical Gears
  • Output Speed: 10~400r/min
  • Ratio: 5,13,20
  • Installation Form: Shaft,Flange Mounted
  • Backstop: Optional
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1. Housing: High-strength Gray Cast Iron Gearboxes
2. Gears: Helical Involute Gears, Carburizing, Quenching, Grinding
3. Shafts: High-strength Hardening Alloy Steel
4. Input Configurations:
Keyed Solid Shaft Input
5. Output Configurations:
Keyed Hollow Shaft Output
6. Oil Seal: Double Lips Skeleton Seal
7. Spare Parts: Torque arm, Optional Backstop


1 Stage(Ratio 5): B05, C05, D05, E05, F05, G05, H05, J05
2 Stage(Ratio 13/20): B13/20, C13/20, D13/20, E13/20, F13/20, G13/20, H13/20, J13/20


1. High strength of gear box, gears and shafts, sturdy and durable
2. 2 metric output shaft bore diameters(Standard and Optional)
3. Optional backstop to prevent backdriving. Backstop is not recommended for the gear ratio 5
4. Double lips skeleton oil seal combines the functions of seal and dust-proof
5. Widely used in belt conveyor and pulley drive system


Models Output Shaft Bore Max. Torque* Nominal Ratio
Standard Optional
SMR-B 30mm 40mm 277N.m 5
SMR-C 40mm 50mm 468N.m
SMR-D 50mm 55mm 783N.m
SMR-E 55mm 65mm 1194N.m
SMR-F 65mm 75mm 1881N.m
SMR-G 75mm 85mm 2970N.m
SMR-H 85mm 100mm 4680N.m
SMR-J 100mm 120mm 7449N.m
*Max. Torque for output speed 100RPM


Conveyors in Mine, Quarry, Gravel Transport, Baggage & Bulk Handling, Animal Feeding, etc.


1. Hanging Shaft Mounted
2. Output Flange Mounted


Oil-bath and Splash Lubrication
Lubricating Oil: Mineral Oil and Synthetic Oil
Extreme pressure oil is not recommended, unless in case of with backstop


Natural Cooling

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