Kawasaki M5X180 Swing Motor, Hydraulic Spare Parts

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Product details

Kawasaki M5X180 Swing Motor

1. Product Overview

The Kawasaki M5X180 is a high-performance axial piston swing motor specially developed for medium and large excavators. It is the original factory slewing drive unit, widely matched with 20-ton to 30-ton class excavators. This hydraulic piston motor adopts a robust integrated structure with built-in mechanical brake assembly, anti-reverse valve and distribution plate. The model M5X180 features large displacement, high starting torque and stable low-speed performance. We also supply full-range hydraulic spare parts for this motor, including piston shoes, cylinder block, valve plate, retainer plate, brake seal kits, bearings and shafts. Original replacement parts and high-quality aftermarket components are available for overhaul and repair. This unit is the core component of the excavator slewing hydraulic system, providing reliable rotation for upper structure.

Model Code Explanation

M5X: Kawasaki standard swing motor series; 180 stands for 180cc displacement.

2. Main Technical Parameters

Item Specification

Model M5X180CHB

Displacement 180 ml/rev

Rated Working Pressure 32 MPa

Max Peak Pressure 35 MPa

Rated Speed 0~120 rpm

Built-in component Multi-disc parking brake, anti-shock valve

Seal material NBR standard, FKM optional

Applicable hydraulic oil ISO VG46, VG68 anti-wear hydraulic fluid

Working temperature -20℃ ~ +95℃

Rotation direction Bi-directional rotation

3. Working Principle

High-pressure oil enters the hydraulic piston motor from the main hydraulic system, pushing the piston assembly to revolve around the cylinder block, converting hydraulic pressure into mechanical torque to drive the excavator upper body rotation. The integrated multi-disc brake locks the output shaft automatically when no control pressure is applied, preventing unexpected slewing on slopes. The built-in buffer valve absorbs pressure spikes to protect the motor from hydraulic shock during frequent start and stop operations. All internal wearing spare parts can be replaced separately for motor overhaul.

4. Core Advantages

1. Large starting torque, stable rotation without crawling at low speed.

2. Integrated wet brake design, reliable holding performance on inclined ground.

3. Equipped with shock relief valve to avoid pressure impact damage.

4. Complete spare parts supply, easy disassembly and overhaul.

5. High durability, long service life under heavy-duty construction conditions.

6. Interchangeable with original Kawasaki unit, direct fit without modification.

5. Application Range

This swing motor and its hydraulic spare parts are mainly used for Hyundai, Doosan, Komatsu, Sany, XCMG 20~30 ton excavators, applied in excavator slewing hydraulic system for construction, mining and earthmoving projects.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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4 year

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

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