Why choose a used hydraulic motor?

Opting for a used hydraulic motor primarily reduces replacement costs significantly for construction machines or agricultural equipment. New parts can be expensive, whereas a reconditioned or tested model offers equivalent performance at a lower price. This is particularly suited for older machines whose new references are no longer available.

What are the different types of hydraulic motors?

There are mainly three families of hydraulic motors: gear motors , which are fast and compact and suited for low torque applications; axial or radial piston motors, providing high power and precision; and orbital motors (known as slow or semi-fast), valued for their high starting torque at low speeds. Each technology addresses specific application requirements, whether for construction machines, agricultural machinery, or industrial equipment.

How to size a hydraulic motor for your machine?

Sizing relies on three key parameters: the required torque for the application (in N.m), desired rotational speed (in rpm), and available pressure in the hydraulic circuit (in bar). Motor displacement is calculated from these data. The pump's flow rate directly influences the resulting rotational speed. Improper sizing leads to either underpower or premature component wear.

How to test a hydraulic motor before installation?

Before installing a used hydraulic motor , start by manually turning the shaft to check for blockage or stiffness. Ensure there is no excessive play on the output shaft and visually inspect seals for any signs of leakage. A pressure test on a test bench remains the most reliable method to validate flow rate, operating pressure, and rotation in both directions.

How to verify compatibility with your construction equipment?

To confirm a hydraulic motor's compatibility with your machine, first note the original reference found on the motor’s nameplate to be replaced. Then compare flange dimensions, shaft diameter and profile, as well as hydraulic connection types. The machine manufacturer's technical documentation is the most reliable source to verify that the motor's characteristics match the hydraulic circuit requirements.

Which brands of hydraulic motors are available used?

In the used market, hydraulic motors from Danfoss, Parker, Bosch Rexroth, Sauer-Danfoss, Poclain, and M+S Hydraulic are common. These manufacturers equip a large portion of construction machinery and agricultural equipment in use. Brands like Eaton or Linde are also present, especially in industrial machines. Availability varies depending on reference, with some easier to find than others based on machine age.

What is the lead time to receive a used hydraulic motor?

Lead time mainly depends on the model’s availability in stock. For common references, shipping within 24 to 48 hours is often possible. For rarer motors or those requiring reconditioning, expect one to two weeks. The complexity of the sought reference and the component’s condition before refurbishment are the two main factors extending processing times.