Swing Motor Assembly for Zoomlion 385 M5X180-RG23

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Product details

Swing Motor Assembly for Zoomlion 385, Model M5X180-RG23

1. Product Overview

Model M5X180-RG23 is a complete swing motor assembly tailored for Zoomlion ZE385 large excavators. Adopting the classic Kawasaki swashplate axial piston structure, it integrates a hydraulic motor and a swing reduction mechanism as one unit. As the core actuator of the excavator hydraulic system for upper structure slewing motion, it bears impact loads during excavation and adapts to frequent start-stop and reversing working conditions of medium-large tonnage excavators.

2. Key Technical Parameters

Parameter Specification

Applicable Model Zoomlion ZE385 Excavator

Part No. M5X180-RG23

Structure Axial piston swing motor assembly (built-in reducer)

Displacement 180mL/r

Max Working Pressure 32MPa

Inlet Flow Range 80~120L/min

Slew Output Speed 8~12r/min

Reduction Type Planetary gear reduction

Mounting Style Vertical flange integrated mounting

Standard Seal NBR oil-resistant seal; FKM seal optional for high-temperature scenarios

Compatible Fluid ISO VG46 anti-wear hydraulic oil

Operating Temperature -15℃~80℃

3. Working Principle

1. Pressurized oil delivered by the main hydraulic pump drives internal pistons reciprocating along the swashplate, converting hydraulic energy into rotational mechanical energy of the motor shaft.

2. Power is transmitted through a multi-stage planetary reducer to lower speed and boost torque, driving the slewing bearing for left/right rotation of the upper body.

3. The built-in buffer structure absorbs sudden impact pressure from excavation loads to protect the hydraulic pump and pipelines. The integrated brake locks the slewing position instantly upon oil cut-off to prevent unintended rotation.

4. Core Advantages

1. Identical mounting dimensions and displacement to original parts, direct replacement for Zoomlion ZE385 without manifold modification.

2. Hardened piston friction pairs deliver outstanding wear and shock resistance for long-term mining and earthmoving work.

3. Integrated motor-reducer design minimizes assembly errors and lowers risks of oil leakage and abnormal gear noise.

4. Dual protection of parking brake and overload relief ensures smooth start-stop and high positioning accuracy.

5. Mature domestic alternative supply chain shortens lead time for routine maintenance replacement.

5. Application Scenarios

Primarily matched for Zoomlion ZE385 excavators in mining, earthmoving, infrastructure demolition and other frequent-slew works; also available for hydraulic system retrofitting of other excavators at the same tonnage class.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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Main Product: hydraulic motor, gear box, hydraulic pump , hydraulic valve , hydraulic winch, hydraulic system

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