ZAX240-3 Swing Motor for Hitachi ZAX240-3 Excavator spare parts

ZAX240-3 Swing Motor for Hitachi ZAX240-3 Excavator spare parts Featured Image
  • ZAX240-3 Swing Motor for Hitachi ZAX240-3 Excavator spare parts
  • ZAX240-3 Swing Motor for Hitachi ZAX240-3 Excavator spare parts

Short Description:

The ZAX200 swing motor is an integrated swing drive assembly professionally customized for Hitachi 20-ton ZAX200 hydraulic excavator, perfectly matching the original load-sensing hydraulic system.

Product Detail

Product Tags

description

The ZAX240-3 swing motor adopts an upgraded heavy-duty axial plunger hydraulic structure, matched with precision-ground carburized-quenched planetary reduction gears. The gear tooth surface undergoes strict hardening and fine polishing treatment, featuring high surface hardness, excellent wear resistance, and strong impact resistance, fully adapting to long-term heavy-load operation and frequent forward and reverse rotation impact of 24-ton Hitachi ZAX240-3 engineering excavators. The built-in high-sensitivity wet multi-disc brake adopts spring pressure holding and hydraulic release design, achieving instant mechanical locking after rotation stops, completely eliminating upper-structure drifting risks during slope and partial-load construction and greatly improving operational safety. The upgraded high-precision valve plate and sliding shoe friction pair optimizes micro oil distribution clearance, effectively suppressing internal leakage and pressure attenuation caused by long-term high-temperature and heavy-load operation, thoroughly solving the problems of weak swing power and slow rotation of aging equipment, and restoring the original smooth and powerful swing performance.

product parameters

Product Model: ZAX240-3 Swing Motor
Product Type: Integrated Swing Drive Motor with Reducer & Wet Parking Brake
Applicable Equipment: Hitachi ZAX240-3 24-Ton Excavator
Structural Features: Axial Plunger Structure, Carburized-Quenched Planetary Gear, Wet Multi-Disc Brake, Integrated Compact Structure, OEM Standard Oil Port Layout, Negative Flow Hydraulic Adaptation
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 High Torque Output, Smooth Low-Speed Rotation, Reliable Brake Locking, Low Internal & External Leakage
Core Functions: Provide stable heavy-duty rotary driving torque for upper carbody, realize accurate fine positioning and anti-slip parking, fully compatible with original negative-flow hydraulic system cycle operation.
Applicable Scenarios: Heavy Earthwork Operation, Rock Excavation and Loading, Foundation Construction, Slope Operation, Long-Term Continuous On-Site Heavy-Duty Work
Output Torque: Matched with Hitachi ZAX240-3 factory standard
Brake Mode: Spring-Engaged Wet Multi-Disc Parking Brake, Hydraulic Pressure Release
Rotation Direction: Bidirectional Forward & Reverse Swing
Installation Mode: 1:1 OEM mounting hole, spline and oil port size, direct replacement without modification
Working Condition: Adapt to frequent start-stop impact, long-term continuous heavy-load cyclic operation
Service Life: Reinforced anti-wear anti-fatigue industrial-grade structure

advantages

  • Full OEM Compatibility, Lossless Plug-and-Play: Strictly follow ZAX240-3 original factory drawing standards for mounting holes, spline specifications and hydraulic port positions. No shell processing, pipe cutting or welding is required during on-site replacement, greatly shortening equipment maintenance downtime and improving overhaul efficiency.
  • Reinforced Hardened Gear Train, Super Impact and Wear Resistance: The planetary gear set adopts upgraded carburizing quenching and precision grinding technology, with higher gear tooth hardness and stronger fatigue resistance. It stably copes with long-term heavy-load and frequent positive and negative rotation impacts of 24-ton excavators, avoiding gear pitting, abnormal noise, jitter and early aging failure of old equipment.
  • High-Stability Wet Brake, Eliminate Car Body Drifting: Optimized high-tension spring pressure holding structure provides stable and reliable parking brake torque. It thoroughly solves the common faults of slow brake response, brake slipping and upper-structure drifting during slope and partial load operation of aging ZAX240-3 excavators, improving overall construction safety and operation precision.
  • Reinforced Sealing System, Adapt to Harsh Heavy-Duty Working Conditions: Multi-layer composite high and low temperature resistant and oil-corrosion resistant sealing components resist long-term hydraulic oil erosion and seasonal temperature aging, permanently solve the external oil leakage problem of old machines, and reduce later maintenance frequency and operating costs.

FAQ

  • Q1: Which excavator is this swing motor suitable for?
  • A: Exclusively customized for Hitachi ZAX240-3 24-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 ZAX240-3 swing motor repair?
  • A: It solves typical aging faults of ZAX240-3 original swing system: insufficient heavy-load swing torque, slow slewing speed, low-speed swing jitter, 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, fully compatible with standard overhaul procedures.
  • Q4: What causes drifting after replacing the swing motor?
  • A: Besides motor performance, check brake pilot pressure, brake relief valve pressure, slewing bearing clearance and main valve swing spool wear to rule out hydraulic system and mechanical clearance failures.
  • Q5: Daily maintenance tips for ZAX240-3 swing motor?
  • A: Keep hydraulic oil clean and replace filter elements regularly; avoid long-term high-frequency heavy-load swing operation; periodically check motor for oil leakage and test brake holding performance under slope working 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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Pack and ship

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