A Series


Helical Bevel Gearmotors & Units


The A Series combines high efficiency and reliability, low maintenance costs and a wide torque range. The right angle layout between INPUT and OUTPUT makes the A Series particularly compact. The gear set combination makes this right-angle product the most efficient and durable in Bonfiglioli's light- and medium-duty portfolio. The A Series 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), servomotors (BMD) and reluctance motors (BSR) can be coupled with the A Series.


Key benefits

  • Minimized mounting space
  • Wide output speed selection range
  • Reduced standard backlash
  • High dynamic and energy saving solution
  • Wide output speed selection range
  • ATEX gearbox for explosive environnements 2G/2D

Main options

  • Surface protection up to C5
  • Reinforced bearings
  • Reduced Backlash
  • Torque Arm
  • Fluor Elastomer oil seals
  • Double oil seals on input
  • Taconite seals


  • Certificate of compliance
  • Inspection certificate
  • ATEX

Gear ratios

4.9 ... 1,715

Torque range

100 ... 14,000 Nm

Transmissible Mechanical Power

0.22 ...150kW


  • Feet and shaft mount with two bore options per size
  • Solid shaft, splined hollow shaft, hollow shaft with shrink discs


  • Input with solid shaft
  • Input with e-motor coupling:
  • M, ME, MX [compact asynchronous]
  • BMD [servo permanent magnet]
  • 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
  • Tropicalization
  • Anti-condensation heaters
  • Backstop


Type File Size
Catalogue   C-A-F-S Series   22.72 Mb   View   Download
Data Sheet   A Series   247.21 Kb   View   Download
Catalogue   C-A-F Series NEMA   35.53 Mb   View   Download

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