Marzocchi ALM gear motors

Gear motors in general

Gear motors are the most popular motors used in modern hydraulic systems where a high torque hydraulic motor is required. Marzocchi gear motors excel in versatility, power and long life span. The simple design of a gear motor ensures relatively low maintenance costs and low purchase prices. Thanks to these properties (enriched by a continuous search into further development of the design, accuracy, choice of materials and production methods) these gear motors are produced to the highest possible standard. Because of this a gear motor can be applied in heavy duty hydraulic applications without loss of hydraulic power. Above all our gear motors have good mechanical and volumetric efficiencies, low noise levels, and last but not least compact dimensions and low power to weight ratios. Marzocchi has different series of hydraulic gear motors in their range of products which have each been designed for specific applications.

Series ALM gear motors

With the ALM series Marzocchi has launched a renewed series of gear motors that have been further developed through years of experience. The ALM gear motors are available in different groups, group ALP1, ALP2, ALP3 and ALP4 that can be used in industrial as well as mobile applications. The housing, flange and cover are made of special high resistance aluminium alloy ensuring minimal distortion at maximum operating pressure or peak pressure. The housing is made by extrusion and the flange and cover are made by injection moulding. The gears are made from specially hardened steel with a precise surface treatment. The design of the right shape of the teeth of the gears ensures a low noise level when operating the Marzocchi hydraulic motor. The complete series of Marzocchi ALM gear motors is available from stock at Findynamica. 

Direction of rotation

ALM gear motors are available in clockwise, counter-clockwise and bi-rotational configurations. Changing the direction of rotation of an ALM hydraulic motor is easy, there are no extra or different components needed to change the direction of rotation.  

Special seals

ALM gear motors are used in many different hydraulic applications, so sometimes it is necessary to equip the gear motors with special seals. Marzocchi ALP gear motors can optionally be provided with the following seals:

  • Option “V”; Viton seals, by using viton seals the ALM gear motor can withstand high temperatures. Temperature range will change to -10°C to +120°C, while maintaining operating pressure P1, P2 and P3 as indicated in the product documentation. An ALM motor with viton seals can also be used in temperatures up to +150°C if the maximum operating pressure does not exceed 20 bar.
  • Option “VV”; these seals can be used for fluids with high temperatures. Temperature range - 10°C to +150°C at max. 20 bar.
  • Option “ST”; these seals make an ALM hydraulic motor suitable for low as well as high temperatures. The motor can be used from -40°C to +120°C.
  • Option “H’; HNBR seals, by using HNBR seals the ALP gear motor can be used at low temperatures. The motor can be used for applications from -40°C to +80°C.

Installation instructions

It is important that the installation instructions are followed when using a new Marzocchi hydraulic motor. See the following link: Installation instructions

Extensive product documentation


ALM gear motors