HDP Series

Helical Parallel Shaft Heavy Duty Gear Units

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HDP Series

When high output torque, robustness reliability and long operating life must be achieved, Bonfiglioli's HDx Series represent the best solution for our custmers needs. Thanks to high quality materials and an optimized design, HD Series can operate in the harshest environemt, as well as in explosive atmospheres, with low maintenance costs and long time service intervals. The output shaft can be chosen both in the parallel (HDP) or right angle(HDO) configuration and to always ensure the minimization of mounting space. HDx Series, furthermore, can be deeply customized thanks to an extremely wide options and accessories portfolio, thus matching most of the requirements of a large applications number.


Torque range
45,935 … 1,858,656 in-lb

Torque Range

Torque range
5,190...210,000 Nm

Gear ratios


  • Key benefits
    • High transmissible power
    • Robustness
    • Mounting Flexibility
    • High customization level
    • Reliability
    • ATEX for explosive atmosphere 2G/2D
  • Main options
    Fan cooling, cooling coil, oil heater
    External cooling unit
    Forced lubrication
    Temperature and oil level sensors
    Taconite seals
  • Output
    Single/double sided solid input shaft (metric or inch dims)
    Keyed hollow shaft
    Shrink disc
  • Motors
    Input with solid shaft
    Input with e-motor coupling:
    • BN, BE, BX [IEC asynchronous]
    • BSR [IEC reluctance]
  • Motor options
    Thermistors and thermostat sensors
    Independent forced cooling
    Incremental, sin/cos absolute single/multi-turn encoders
    Anti-condensation heaters



Selection Of Gearboxes- Industrial Heavy Duty Geared Products-HDPO

Product Catalogue –Industrial Heavy Duty Geared Products-HDPO

Product Range I&A

Brochure Heavy Duty

Other files

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