LG225 Swing Motor for LiuGong 225 Excavator spare parts

Short Description:

The LG225 swing motor is a full integrated swing drive assembly professionally customized for LiuGong 22‑ton LG225 series excavators.

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Product Detail

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description

The LG225 swing motor adopts heavy‑duty axial plunger hydraulic structure, matched with carburized and quenched planetary reduction gears. The gear tooth surface is precisely ground to improve overall hardness, wear resistance and impact resistance, fully adapting to the frequent forward‑reverse swing and heavy‑load impact working characteristics of 22‑ton medium and large excavators. The built‑in high‑sensitivity wet multi‑disc brake adopts spring pressure holding and hydraulic release design, which can quickly lock the upper structure position when the swing stops, effectively solving the problem of body drifting during slope construction and improving operation safety. The upgraded high‑precision valve plate and shoe friction pair optimizes oil distribution clearance, suppresses internal leakage and pressure attenuation under long‑time continuous high‑load operation, and effectively restores the original linear and powerful swing performance of the equipment. The whole machine is equipped with high‑temperature and oil‑resistant composite sealing kits to resist hydraulic oil erosion and long‑term temperature cycle aging, reducing external oil leakage failure rate.

product parameters

Product Model: LG225 Swing Motor

Product Type: Integrated Swing Drive Motor with Reducer & Wet Parking Brake

Applicable Equipment: LiuGong 225 Series 22‑Ton Excavator

Structural Features: Axial Plunger Structure, Carburized Quenched Planetary Gear, Wet Multi‑Disc Brake, Integrated Compact Structure, Original Oil Port Layout

Core Material: High‑Strength Alloy Quenched Gear, Thickened Reinforced Motor Housing, High‑Precision Friction Pair, High‑Temperature Resistant Composite Seal

Working Performance: Sensitive Swing Response, Stable Torque Output, No Stop Jitter, Reliable Brake Locking, Low Internal & External Leakage

Core Functions: Provide stable rotary driving torque for upper structure, realize accurate swing positioning and anti‑slip parking, support long‑term heavy‑load cycle operation.

Working Type: Medium‑Large Tonnage Integrated Swing Drive Assembly

Rated Swing Pressure: 25–32bar

Output Torque: Matched with original LG225 factory standard

Brake Mode: Spring‑Engaged Wet Multi‑Disc Parking Brake, Hydraulic Pressure Release

Rotation Direction: Bidirectional Forward & Reverse Swing

advantages

Original Factory Zero‑Error Matching, Lossless Plug‑and‑Play: Strictly follow LG225 original drawing standards for mounting holes, spline parameters and hydraulic port positions. No casing processing, pipeline cutting or welding is required during on‑site replacement, greatly shortening equipment maintenance downtime and improving overhaul efficiency.
Quenched Gear Train, Strong Anti‑Impact & Anti‑Wear Ability: The planetary gear set adopts carburizing and quenching precision grinding process, with higher surface hardness and fatigue resistance. It effectively copes with frequent forward‑reverse swing impact of 22‑ton earthwork operations, avoiding gear pitting, abnormal noise and early wear of old equipment.
High‑Sensitivity Wet Brake, Effectively Prevent Upper‑Structure Drifting: Optimized spring pressure holding structure provides stable and reliable parking brake torque. It perfectly solves the common faults of slow brake response, slipping and body drifting of aging LG225 excavators during slope and offset operation, improving construction safety.
Optimized Friction Pair, Eliminate Internal Leakage & Weak Swing: Upgraded precision valve plate and shoe matching optimizes oil distribution clearance, effectively suppresses internal leakage and pressure attenuation under long‑term high‑temperature heavy‑load operation, restores original powerful swing torque, and solves the problems of slow swing speed and weak loaded rotation.
Reinforced Sealing System, Adapt To Harsh Construction Environments: Adopt multi‑layer composite high‑temperature and oil‑resistant sealing components, which can resist hydraulic oil corrosion and seasonal temperature cycle aging. It permanently solves the external oil leakage problem of old machines and reduces later maintenance frequency and cost.

FAQ

Q1: Which excavator is this swing motor suitable for?
A: Exclusively customized for LiuGong 225 22‑ton excavator, it is an integrated swing motor assembly with reducer and wet brake, not universal for other tonnage or brand models.
Q2: What main faults can the LG225 swing motor repair?
A: It solves typical aging faults of LG225 original swing system: insufficient swing torque, slow slewing speed, jitter at swing stop, brake slipping, upper‑structure drifting, high‑temperature internal leakage and external oil leakage.
Q3: Is on‑site modification required for installation?
A: No modification needed. 1:1 fully matched OEM installation size, spline and oil port layout support direct replacement, completely compatible with standard overhaul procedures.
Q4: What causes drifting after replacing the swing motor?
A: In addition to the motor itself, check the brake pilot pressure, brake relief valve pressure, slewing bearing clearance and main valve swing spool wear condition to eliminate system hydraulic and mechanical clearance anomalies.
Q5: Daily maintenance tips for LG225 swing motor?
A: Keep hydraulic oil clean and replace filter elements regularly; avoid long‑term frequent heavy‑impact swing operation; regularly check motor for oil leakage and test brake holding performance on slope conditions.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.

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