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Hydraulic Motors for Excavators & Heavy Machinery

Hydraulic motors are the components responsible for converting fluid energy into the rotational force needed for machine movement. While a steam engine or a modern electric engine provides power differently, in heavy machinery, the internal combustion engine remains the primary power supply. It drives the hydraulic system, which in turn powers the motors that turn your tracks and swing your cab.

To achieve this, the engine must generate sufficient internal combustion engine power to spin the main pump, which creates the necessary hydraulic pressure to rotate the motor’s internal groups. Reliable hydraulic pumps and motors are essential for ensuring your equipment operates in a safe and efficient manner. If motor performance drops, your machine loses the torque required to navigate tough terrains or lift heavy loads.

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6 products

Hydraulic Motor MS05-0-133 for Poclain MS Series
Parker Hydraulic Motor 3788847 F12-250 for Heavy Equipment

Hydraulic Motor 3788847 F12-250-QF-SV-K-000-0000-P0 for Parker Heavy Machinery

Regular price $1,138.00
Sale price $1,138.00 Regular price $193.00
Hydraulic Motor 74328DBY / 74328DAR / 74328DAM for Eaton

Hydraulic Motor 74328DBY / 74328DAR / 74328DAM for Eaton – Drive System

Regular price $3,808.00
Sale price $3,808.00 Regular price $791.00
Hydraulic Motor VOE21027059 21027059 for Volvo BM12 Grader

Hydraulic Motor VOE21027059 21027059 for Volvo BM12 Motor Grader

Regular price $988.00
Sale price $988.00 Regular price
Hydraulic motor 11116529 for Volvo articulated truck

Hydraulic Motor 11116529 VOE11116529 for Volvo Articulated Truck – Articulated Truck

Regular price $2,315.00
Sale price $2,315.00 Regular price
Sauer Danfoss 4812104209 Hydraulic Piston Pump

Collection: Hydraulic Motors

From Combustion to Torque: The Power Cycle

The process begins in the internal combustion engine, where the air-fuel mixture is ignited by sophisticated ignition systems. As each piston moves within the engine, the energy is transferred through internal engine components to the main pump. This pump generates the high-pressure flow that travels through the control system to the hydraulic motors.

Because these motors are a critical moving part, they rely on the same level of precision as internal engine parts. For example, just as the lubrication system protects cylinder walls from friction, high-quality hydraulic fluid and internal seals protect the motor’s rotating groups from wear under extreme heat.

Integrating the Electrical and Hydraulic System

Modern heavy machinery uses a complex electrical power system to manage hydraulic output. Electrical system maintenance is vital because electronic sensors and solenoids tell the hydraulic motor when to rotate and at what speed.

To ensure electrical safety, the system is protected by a circuit breaker or fuse network. If these electrical components fail, it can lead to total electrical system failures, leaving the hydraulic motors unable to receive commands from the operator.

Maximizing Service Life with Regular Maintenance

To keep your hydraulic pumps and motors running at peak performance, a holistic approach to regular maintenance is required.

  • Cooling System Health: Hydraulics generate heat. A well-maintained cooling system prevents the oil from thinning, which protects the motor's internal electrical equipment and seals.
  • Fuel Injection Accuracy: Efficient fuel injection ensures the engine provides stable torque to the hydraulic pump, preventing pressure fluctuations in the motors.
  • Electrical System Maintenance: Regularly check for loose connections in the wiring harness to prevent a circuit breaker from tripping during high-load operations.

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