ZAX330 Swing Motor for Hitachi ZAX330 Excavator spare parts

ZAX330 Swing Motor for Hitachi ZAX330 Excavator spare parts Featured Image
  • ZAX330 Swing Motor for Hitachi ZAX330 Excavator spare parts
  • ZAX330 Swing Motor for Hitachi ZAX330 Excavator spare parts
  • ZAX330 Swing Motor for Hitachi ZAX330 Excavator spare parts

Short Description:

The ZAX240-3 swing motor is an original-matched integrated swing drive assembly tailored for Hitachi 24-ton ZAX240-3 hydraulic excavator, perfectly compatible with the factory’s negative flow hydraulic control system.

Product Detail

Product Tags

description

The ZAX330 swing motor adopts upgraded heavy-duty reinforced axial plunger hydraulic structure, matched with oversized precision-ground carburized-quenched planetary reduction gears. The gear tooth surface undergoes deep hardening and fine polishing treatment, with upgraded overall hardness, extreme wear resistance and strong impact resistance, fully adapting to long-term ultra-heavy load operation, frequent violent forward and reverse rotation impact and harsh quarry working conditions of 33-ton Hitachi large engineering excavators. The built-in high-torque wet multi-disc brake adopts high-strength spring pressure holding and hydraulic release design, achieving instant and firm mechanical locking after rotation stops, completely eliminating upper-structure drifting risks during large-angle slope and heavy partial-load construction and greatly improving construction safety and equipment stability. The upgraded high-precision thickened valve plate and sliding shoe friction pair optimizes professional high-load micro oil distribution clearance, effectively suppressing internal leakage and sharp pressure attenuation caused by long-term high-temperature and high-pressure heavy-load operation, thoroughly solving the problems of weak swing power and powerless loaded rotation of aging equipment, and restoring the original strong and stable heavy-duty swing performance.

product parameters

Product Model: ZAX330 Swing Motor
Product Type: Heavy-Duty Integrated Swing Drive Motor with Reducer & High-Torque Wet Parking Brake
Applicable Equipment: Hitachi ZAX330 33-Ton Large Excavator
Structural Features: Reinforced Axial Plunger Structure, Deep-Quenched Oversized Planetary Gear, High-Torque Wet Multi-Disc Brake, Heavy-Duty Integrated Structure, OEM Standard Oil Port Layout, Negative Flow Hydraulic System Adaptation
Core Material: Super-Strength Alloy Quenched Gear, Thickened Reinforced Heavy-Duty Housing, High-Precision Wear-Resistant Friction Pair, High-Pressure High-Temperature Resistant Composite Seal
Working Performance: Ultra-High Torque Output, Sensitive Swing Response, Stable Heavy-Load Rotation, Smooth Low-Speed Operation, Firm Brake Locking, Low High-Pressure Internal & External Leakage
Core Functions: Provide sustained ultra-high torque rotary driving power for large upper carbody, realize accurate heavy-load positioning and anti-slip parking, fully compatible with original high-efficiency negative-flow hydraulic system cyclic operation.
Applicable Scenarios: Large-Scale Earthwork Stacking, Rock Quarrying and Crushing, Heavy Material Loading, Foundation Demolition, Large-Area Construction, Long-Term Ultra-Heavy-Duty Continuous Operation

advantages

  • Full OEM Heavy-Duty Compatibility, Lossless Plug-and-Play: Strictly follow ZAX330 original factory heavy-duty drawing standards for mounting holes, spline specifications and high-pressure hydraulic port positions. No shell processing, pipe cutting or welding is required during on-site replacement, greatly shortening downtime of large equipment and improving heavy machine overhaul efficiency.
  • Deep-Quenched Oversized Gear Train, Extreme Impact and Wear Resistance: The planetary gear set adopts deep carburizing quenching and ultra-precision grinding technology, with greatly improved gear tooth hardness, toughness and fatigue resistance. It stably copes with long-term quarry heavy-load and violent frequent positive and negative rotation impacts of 33-ton large excavators, avoiding gear pitting, tooth breakage, abnormal noise and early aging failure of old equipment.
  • High-Torque Wet Brake, Thoroughly Eliminate Heavy Machine Drifting: Optimized high-tension thickened spring pressure holding structure provides super stable and reliable heavy-load parking brake torque. It thoroughly solves the stubborn faults of slow brake response, brake slipping and serious upper-structure drifting during large-angle slope and heavy partial load operation of aging ZAX330 large excavators, greatly improving heavy construction safety and equipment operation stability.
  • High-Pressure Resistant Sealing System, Adapt to Harsh Quarry Working Conditions: Multi-layer composite high-pressure high-temperature oil-corrosion resistant sealing components resist long-term high-strength hydraulic oil impact and extreme temperature aging, permanently solve the oil leakage problem of old heavy machines, and reduce later heavy equipment maintenance frequency and operating costs.
  • Strict Heavy-Load Factory Testing, Stable and Durable Performance: Each ZAX330 swing motor undergoes complete high-pressure torque calibration, long-time brake pressure holding test, extreme pressure sealing test and heavy-load impact aging test. The stable and durable performance significantly improves the long-term operation reliability and residual value of overhauled large excavators.

FAQ

  • Q1: Which excavator is this swing motor suitable for?
  • A: Exclusively customized for Hitachi ZAX330 33-ton large excavator. It is a heavy-duty integrated swing motor assembly with reducer and high-torque wet brake, not universal for other Hitachi tonnage or series models.
  • Q2: What main faults can the ZAX330 swing motor repair?
  • A: It solves typical stubborn aging faults of ZAX330 original heavy-duty swing system: insufficient ultra-heavy-load swing torque, slow loaded slewing speed, low-speed swing jitter, brake slipping, serious slope drifting, high-pressure high-temperature internal leakage and housing oil leakage.
  • Q3: Is on-site modification required for installation?
  • A: No modification needed. 1:1 fully matched OEM heavy-duty installation size, spline and high-pressure oil-port layout support direct replacement, fully compatible with standard large excavator overhaul procedures.
  • Q4: What causes drifting after replacing the swing motor?
  • A: Besides motor performance, check heavy-load brake pilot pressure, brake relief valve pressure, large slewing bearing clearance and main valve swing spool wear to rule out hydraulic system and mechanical clearance failures.
  • Q5: Daily maintenance tips for ZAX330 swing motor?
  • A: Keep high-pressure hydraulic oil clean and replace filter elements regularly; avoid long-term continuous ultra-heavy-load frequent swing impact operation; periodically check motor for oil leakage and test heavy-load 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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