M5X180 Swing Hydraulic Motor
Product Overview
The M5X180 is a heavy‑duty fixed‑displacement Hydraulic piston motor, which acts as the core slewing drive hydraulic motor for medium‑large excavators and other construction machinery. As a key executive component of the complete hydraulic system, it converts high‑pressure hydraulic oil power into powerful rotary torque to drive the upper‑structure slewing action of excavators. This reliable Hydraulic piston motor is integrated with built‑in parking brake, anti‑shock valve and makeup valve, effectively preventing impact, slippage and accidental rotation during operation. With compact integrated structure, strong torque output and excellent shock‑resistance performance, it greatly improves the running stability, safety and service life of the whole hydraulic system. Widely used for original replacement, equipment overhaul and spare‑parts supply of Hyundai, Volvo, Doosan and other medium‑large excavators.
Technical Specifications
‑ Model: M5X180
‑ Product Type: Fixed‑displacement swash‑plate Hydraulic piston motor, swing hydraulic motor
‑ Displacement: 180 cc/rev
‑ Rated working pressure: 315 bar
‑ Max peak pressure: 350 bar
‑ Built‑in parts: Parking brake, anti‑shock relief valve, makeup valve
‑ Mounting: Standard flange connection, matched with swing reducer assembly
‑ Working medium: Anti‑wear hydraulic oil for mobile construction‑machine hydraulic system
‑ Operating temperature: ‑20℃ ~ +85℃
‑ Feature: High starting torque, stable slewing speed, anti‑shock protection, brake‑lock safety function, strong anti‑pollution ability, suitable for frequent forward‑reverse slewing cycles of excavator.
Working Principle
High‑pressure oil delivered from the main pump of the hydraulic system flows into the hydraulic motor. The pressure oil pushes the internal pistons of the Hydraulic piston motor to reciprocate, driving the cylinder block and output shaft to rotate, and then transmits torque to the swing reducer to realize left‑right rotation of the excavator upper body. When the slewing action stops, the built‑in parking brake locks the output shaft to prevent free rotation and drifting. The built‑in anti‑shock valve absorbs pressure spikes caused by sudden start‑stop, protecting the whole hydraulic system from hydraulic impact damage. Long‑time heavy‑load operation will cause wear of pistons, cylinder block, valve plate and friction pairs, resulting in weak slewing torque, slow rotation, abnormal noise or oil leakage. Replacing a qualified M5X180 swing hydraulic motor can fully restore normal slewing performance.
Core Advantages
1. Mature Kawasaki‑grade Hydraulic piston motor technology, large and stable torque output, guarantees reliable slewing power of construction machinery.
2. Integrated multi‑valve design (brake, anti‑shock, makeup valve), reduces external piping layout, simplifies the whole hydraulic system and lowers leakage risk.
3. Built‑in anti‑shock protection effectively absorbs slewing impact, reduces vibration and noise, improves operator comfort and extends component service life.
4. Heavy‑duty mechanical parking brake provides safe locking function, prevents accidental rotation of upper structure on slopes, greatly improving equipment safety.
5. Standard installation dimension, good interchangeability, direct replacement without extra modification, shortens maintenance downtime.
Application Range
M5X180 Hydraulic piston motor is a dedicated swing‑drive hydraulic motor for excavator slewing circuits in the hydraulic system. Mainly compatible with 20‑30 ton medium‑large excavators of Hyundai, Volvo, Doosan, Kobelco and other brands. Suitable for hydraulic maintenance workshops, construction‑equipment repair yards, machinery leasing companies and global spare‑parts suppliers for overhaul, maintenance and replacement.
