S Series

Helical Single-Stage

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S Series

The S Series design makes this gearmotor particularly effective for pump, fan and blower applications. To meet the needs of customers in these sectors, the S Series is also available in the foot or flange versions and can be completed with a wide range of electric motors entirely manufactured by Bonfiglioli. Asynchronous motors both IEC and compact (BN-BE-BX/M-ME-MX) and reluctance motors (BSR) can be coupled with the S Series. With the breadth of its portfolio, Bonfiglioli provides customers with an outstanding balance of efficiency, dynamics and cost effectiveness.


Torque range
185 … 1,770 in-lb

Torque Range

Torque range
21 ... 200 Nm

Gear ratios
1.4 ... 13.1

Certificate of compliance
Inspection certificate

Transmissible Mechanical Power
0.09 ... 11.6 kW

Feet mounting
Flange mounting


  • Key benefits
    • Cost effective solution
    • Minimized mounting space
    • Robustness
    • Reduced standard backlash
    • High dynamic and energy saving solution
  • Main options
    Gearbox supplied with oil [Size 50]
    Surface protection up to C5
    Fluor Elastomer oil seals
  • Motors
    Input with solid shaft
    Input with e-motor coupling:
    • M, ME, MX [compact asynchronous]
    • BSR [IEC reluctance]
    • BN, BE, BX [IEC asynchronous]
    • BS [IEC single phase]
  • Motor options
    Thermistors and thermostat sensors
    Independent forced cooling
    Incremental, sin/cos absolute single/multi-turn encoders
    Anti-condensation heaters


Product Catalogue –Industrial Gearmotors-C-A-F-S

Product Catalogue –Industrial Gearmotors-C-A-F-S-IE2-IE3

Product Catalogue –Industrial Gearmotors-C-A-F-S-NEMA

Selection Of Gearboxes- Industrial Gearmotors-C-A-F-S-VF-W

Product Range I&A

Spare Parts List_S
Other files

Other files

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