PC120-6 Swing Motor for Komatsu 12 Ton Excavator spare parts

PC120-6 Swing Motor for Komatsu 12 Ton Excavator spare parts Featured Image
  • PC120-6 Swing Motor for Komatsu 12 Ton Excavator spare parts
  • PC120-6 Swing Motor for Komatsu 12 Ton Excavator spare parts
  • PC120-6 Swing Motor for Komatsu 12 Ton Excavator spare parts

Short Description:

The AP2D25 hydraulic pump is a high-grade small-displacement open-circuit variable axial piston pump in the AP2D series, with a rated displacement of 25ml/r.

Product Detail

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description

The PC120-6 swing motor adopts an integral high-torque fixed-displacement piston structure, optimized and upgraded for the frequent slewing and impact load working conditions of Komatsu 12-ton excavators. The core components including cylinder block, piston assembly, valve plate and friction pairs are forged with high-strength wear-resistant alloy materials, equipped with precision grinding and gap self-compensation technology, ensuring stable output efficiency and low wear loss under long-term cyclic slewing operation. The motor is matched with a built-in multi-disc brake structure, featuring fast braking response and reliable locking performance, which effectively prevents the excavator from sliding and drifting on slopes and uneven ground. The upgraded reinforced shell and high-rigidity internal bearing structure greatly improve vibration resistance and fatigue resistance, adapting to harsh working environments such as earth-rock mixed excavation and frequent directional switching. With standard matched hydraulic pressure and flow parameters, it realizes smooth slewing start, uniform rotation speed and stable stop without jitter.

product parameters

Product Model: PC120-6 Hydraulic Swing Motor Assembly
Product Type: Fixed Displacement High-Torque Rotary Hydraulic Motor
Applicable Equipment: Komatsu PC120-6 12 Ton Medium Excavator
Structural Features: Integral Piston Structure, Built-In Multi-Disc Brake, Reinforced Rigid Shell, High-Precision Friction Pair, Anti-Shock and Anti-Fatigue Design
Core Material: High-Strength Wear-Resistant Alloy Core + Integral Cast Reinforced Housing
Working Performance: Large Starting Torque, Stable Low-Speed Operation, Fast Braking Response, Low Jitter and Low Leakage
Core Functions: Provide Stable High-Torque Rotary Power for Excavator, Ensure Smooth and Accurate Slew Operation and Reliable Parking Locking
Applicable Scenarios: Earthwork Excavation, Site Leveling, Frequent Direction Switching, Slope Operation, Long-Term Cyclic Rotary Construction
Matching Parts: PC120-6 Slew Reducer, Standard Rotary Pipeline, High-Pressure Hydraulic Oil Seal Assembly

advantages

  • High Starting Torque, Powerful Rotary Performance: The PC120-6 swing motor adopts a high-torque fixed-displacement design, which provides sufficient rotary power reserve for medium-load earthwork and slope operation. It completely solves the problems of weak rotation and slow slewing of old motors under load, ensuring efficient construction output.
  • Stable Low-Speed Operation, Smooth Fine Slew: Optimized precision friction pair matching and pressure balance structure effectively suppress low-speed jitter and crawling. The rotation speed is uniform during fine adjustment and directional switching, improving the accuracy of site leveling and positioning operation.
  • Reliable Multi-Disc Braking, No Slew Drift: Built-in reinforced multi-disc mechanical brake has strong locking force and fast response. It can stably lock the rotary platform on slopes and uneven roads, effectively preventing equipment sliding and position deviation, improving construction safety.
  • Excellent Pressure Resistance and Impact Resistance: The whole machine is upgraded with high-pressure resistant structure, adapting to instantaneous hydraulic impact and frequent load changes during excavation. The internal components have low wear and stable performance, avoiding power attenuation caused by long-term impact operation.
  • Ultra-Low Leakage Design, Long Service Life: Adopting imported high-pressure wear-resistant oil seals and self-compensation gap technology, internal and external leakage is effectively reduced. The anti-fatigue and vibration-resistant structure adapts to long-term high-frequency cyclic operation, greatly reducing failure rate.
  • Original Standard Interchangeability, Low Maintenance Cost: Strictly produced according to OEM installation dimensions and hydraulic parameters, it supports plug-and-play direct replacement without modification. It shortens maintenance downtime and reduces long-term operation and replacement costs.

FAQ

  • Q1: Which excavator does the PC120-6 swing motor fit for?
  • A: This swing motor is specially customized for Komatsu PC120-6 12-ton medium excavator, with fully matched installation size, hydraulic parameters and reducer assembly interface, achieving perfect vehicle matching and interchangeability.
  • Q2: What are the common faults of aging PC120-6 swing motor?
  • A: Aging motors usually have problems such as weak slewing power, slow rotation speed, obvious jitter during start-stop, oil leakage, and automatic sliding on slopes. Replacing the new motor can completely restore the original rotary performance.
  • Q3: Why does the excavator slew jitter at low speed?
  • A: Low-speed jitter is mostly caused by worn friction pairs, increased internal gaps and unstable pressure balance of the old motor. The new PC120-6 swing motor adopts precision matching structure to completely solve low-speed crawling and jitter problems.
  • Q4: Is on-site modification required for replacement?
  • A: No modification is needed. The PC120-6 swing motor fully conforms to OEM standard parameters and mounting hole positions, supporting direct plug-and-play replacement, which is convenient and efficient for on-site maintenance.
  • Q5: How to maintain the swing motor daily?
  • A: Keep the hydraulic oil clean and replace filter elements regularly to avoid particle wear on internal friction pairs; avoid long-term overload frequent slewing; regularly check oil seal tightness and oil leakage to ensure stable braking and rotary performance.

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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our warehouse

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