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S Series
Helical Single-Stage
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 (B-BE-BX/M-ME-MX), servomotors (BMD) 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

Torque (Nm)
  • 10
  • 20
  • 30
  • 40
  • 50
  • Key benefits

    Minimized mounting space
    Reduced standard backlash
    Highly dynamic, energy-saving solution
    Wide output speed selection range
    Gearboxes can operate safely in explosive environments
  • Main options

    Double oil seals
    Fluoroelastomer seals
    Reduced backlash
    Up to C5 surface protection
  • Torque range

    21 ... 200 Nm
  • Gear ratios

    1.4 ... 13.1
  • Certifications

    Certificate of compliance
    Inspection certificate
  • Transmissible Mechanical Power

    0.09 ... 11.6 kW
  • Output

    Feet mounting
    Flange mounting
  • 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

Key features

Essential design

Compact motor coupling

Unibox housing

Forced gearshaft coupling

Servomotor coupling

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Related Products

Download Documents

Product Range Catalogue- Discrete Manufacturing & Process Industries

Product Range Catalogue- Discrete Manufacturing & Process Industries

Download technical documentation

Register now to download the following documents
  • 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
  • Spare Parts List_S

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