ZAX200-5 Swing Motor for Hitachi ZAX200-5 Excavator spare parts

Short Description:

The ZAX200-5 swing motor is an integrated swing drive assembly exclusively designed for Hitachi 20-ton ZAX200-5 hydraulic excavator, matching the original HHH high-efficiency hydraulic system.

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Product Detail

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description

The ZAX200-5 swing motor adopts heavy-duty axial plunger hydraulic structure, paired with precision-ground carburized-quenched planetary reduction gears. The gear tooth surface undergoes hardening treatment to greatly improve hardness, wear resistance and impact resistance, fully adapting to the frequent forward-reverse swing impact and long-cycle variable-load operation characteristics of 20-ton Hitachi excavators. The built-in high-sensitivity wet multi-disc brake adopts spring pressure holding and hydraulic release design, achieving instant mechanical locking after swing stop, which effectively avoids upper-structure drifting on slope construction and improves operation safety. The upgraded high-precision valve plate and shoe friction pair optimizes oil distribution clearance, suppresses internal leakage and pressure attenuation under long-term high-temperature heavy-load operation, and restores the original linear and powerful swing performance of the equipment. Equipped with high-temperature and oil-resistant composite sealing kits, it resists hydraulic oil erosion and seasonal temperature aging, reducing external oil leakage failure rate.

product parameters

Product Model: ZAX200-5 Swing Motor

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

Applicable Equipment: Hitachi ZAX200-5 20-Ton Excavator

Structural Features: Axial Plunger Structure, Carburized-Quenched Planetary Gear, Wet Multi-Disc Brake, Integrated Compact Structure, OEM Standard 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, perfectly match HHH hydraulic system cycle operation.

Applicable Scenarios: Large-Volume Earthwork Piling, Hard Soil Excavation, Material Loading & Unloading, Slope Construction, Long-Term Continuous Site Operation

Matching Parts: Fully compatible with original ZAX200-5 slewing bearing, main control valve and hydraulic pipeline system.

advantages

Original Factory Zero-Error Matching, Lossless Plug-and-Play: Strictly follow ZAX200-5 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 copes with frequent forward-reverse swing impact of 20-ton earthwork operations, avoiding gear pitting, abnormal noise and early wear of aging Hitachi 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 ZAX200-5 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 Hitachi ZAX200-5 20-ton excavator, it is an integrated swing motor assembly with reducer and wet brake, not universal for other Hitachi tonnage or series models.
Q2: What main faults can the ZAX200-5 swing motor repair?
A: It solves typical aging faults of ZAX200-5 original swing system: insufficient swing torque, slow slewing speed, swing jitter when stopping, brake slipping, upper-structure drifting on slopes, 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 ZAX200-5 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.