Excavator Hydraulic Motor

The KYB MAG-180VP-6000 is an integrated axial piston travel motor designed specifically for heavy-duty tracked construction machinery. It features a built-in planetary reducer and parking brake, making it a high-torque, heavy-duty travel drive machine designed for heavy-load operation. It ensures reliable starting and operation of equipment in challenging terrains such as inclines or muddy conditions. Its rated operating pressure is 34.3 MPa, and its peak output torque reaches 6000 kgf·m. This motor is primarily suitable for 30-36 ton excavators and similar heavy-duty tracked equipment, featuring dual-speed variable displacement, high-reliability braking, and high efficiency with low impact. It is one of the mainstream configurations for heavy-duty construction machinery travel systems.

Dual-speed variable displacement and planetary reduction: Typically, it adopts a structure integrating a swashplate axial piston motor and a planetary reducer. Controlled by an external pilot hydraulic signal, dual-speed switching can be achieved, accommodating both low-speed, high-torque (climbing) and high-speed travel conditions.

Integrated safety and buffer functions: Built-in balance valves, overload relief valves, and anti-reverse valves reduce hydraulic shock during startup, reversing, and braking, improving system efficiency and safety. It also features a mechanical parking brake (spring brake, hydraulic release) that automatically locks when the machine stops, preventing rollover on slopes.

High durability and interchangeability: Key internal components utilize wear-resistant materials and a reinforced sealing system to withstand continuous high-intensity operation.

Primarily used in the left and right travel drive systems of 30-36 ton tracked hydraulic excavators, it can also be widely applied to similarly tonnage heavy-duty tracked drilling rigs, tracked cranes, tracked crushers, mining tracked vehicles, and other mobile hydraulic equipment. It is suitable for heavy-duty, continuous, high-intensity, and complex operating scenarios such as mining, large-scale infrastructure projects, earthwork operations, and water conservancy construction, and is the preferred configuration for the walking drive system of heavy tracked equipment.Use for SK305-8,HX305/335,SY305/SY335, YC360, CASE360, SC330, Fit for machine 30-33T

FAQ for hydraulic motor

Q1: Are MAG-180VP-6000 and MAG-230VP-6000 directly interchangeable?

A: No, they are not directly interchangeable. The displacement, housing mounting flange, and internal flow distribution structure are different; although the reduction ratio is the same (60), the torque and flow requirements are different. Forcing an installation will result in insufficient power and overheating.

Q2: What does the "G" at the end of the model number represent? Is there a difference between versions without "G"?

A: "G" represents the valve body assembly version; the port layout and built-in balance valve parameters are slightly different. Orders must include the complete model number MAG-180VP-6000G to avoid incorrect oil passage positions.

Q3: Can I buy only the motor head and keep the existing planetary reducer?

A: Yes, but the output spline and flange mounting dimensions must be checked; prioritize replacing the entire assembly to prevent abnormal clearances and premature wear between new and old components.

Q4: How should the drain port be connected? Can it be blocked?

A: Blocking the drain port is strictly prohibited. The drain line returns directly to the oil tank, with a back pressure ≤0.1MPa. Continuous oil leakage inside the motor housing can cause blockage, leading to increased pressure in the housing, damage to the oil seal, and even bursting. All transport plugs must be removed before installation.

Q5: Is it necessary to bleed the motor after installation?

A: It must be bleed under no-load and at low speed. For new machines or after repairs, first loosen the drain line connector and jog the machine at low speed until no air bubbles flow out, then tighten it. Air will cause abnormal noise, cavitation, and shaking during movement.

Q6: What is the standard pilot pressure for fast/slow speed switching?

A: The standard pilot switching pressure is 1.8～2.5 MPa. Too low a pressure will prevent switching to high speed, while too high a pressure will cause a large impact during switching.

Q7: What are the brake release pressure requirements?

A: The spring brake will automatically release when the main travel oil circuit pressure is established. Forcibly driving the tracks while the high-pressure brake is not released is extremely dangerous and can easily burn out the friction plates.

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