Kawasaki SG04 Pilot Gear Pump for 4–6 Ton Mini Excavators spare parts

Kawasaki SG04 Pilot Gear Pump for 4–6 Ton Mini Excavators spare parts Featured Image
  • Kawasaki SG04 Pilot Gear Pump for 4–6 Ton Mini Excavators spare parts
  • Kawasaki SG04 Pilot Gear Pump for 4–6 Ton Mini Excavators spare parts
  • Kawasaki SG04 Pilot Gear Pump for 4–6 Ton Mini Excavators spare parts
  • Kawasaki SG04 Pilot Gear Pump for 4–6 Ton Mini Excavators spare parts
  • Kawasaki SG04 Pilot Gear Pump for 4–6 Ton Mini Excavators spare parts
  • Kawasaki SG04 Pilot Gear Pump for 4–6 Ton Mini Excavators spare parts

Short Description:

The SG02 gear pump is a universal high-precision low-noise pilot auxiliary pump specially designed for full-series 1.5–6 ton mini excavators.

Product Detail

Product Tags

description

The SG04 pilot gear pump adopts an upgraded thickened high-precision gear meshing structure and enhanced integral cast pump body, optimized for long-term high-frequency heavy-load cyclic operation of 4–6 ton excavator pilot systems. Compared with the SG02 standard version, it increases effective flow displacement, optimizes internal flow channel layout, and significantly improves instantaneous flow supply capacity under variable load conditions. The high-strength alloy gear pair and thickened wear-resistant floating bushing undergo ultra-precision finishing treatment, with more reasonable matching clearance, lower high-load friction loss and stronger anti-fatigue wear resistance. The upgraded high-precision constant-pressure stabilization system effectively suppresses flow and pressure fluctuation during full-load switching, solving typical faults such as pilot pressure drop, action jitter and unsmooth compound linkage of large excavators under heavy-load working conditions.

product parameters

Product Model: SG04 High-Stability Large-Flow Hydraulic Pilot Gear Pump
Product Type: Heavy-Duty Upgraded Pilot Control Pump for Medium Micro Excavators
Applicable Equipment: 4–6 Ton Heavy-Duty Mini Excavators, Matching PVD-2B-36, PVK-2B-505 Large-Displacement Main Pumps
Structural Features: Thickened Reinforced Pump Body, Enlarged Flow Channel Design, High-Flow Constant Pressure Output, Heavy-Load Anti-Fatigue Structure, High-Temperature Resistant Sealing
Core Material: Thickened High-Strength Wear-Resistant Alloy Gear + High-Rigidity Integral Cast Iron Pump Body + High-Temperature Resistant Imported Oil Seal
Working Performance: Sufficient Heavy-Load Flow Supply, Stable Constant Pressure Holding, Low Pressure Pulsation, High-Temperature No Attenuation, Sensitive Heavy-Duty Operation
Core Functions: Provide Surplus Stable Pilot Pressure for Large-Displacement Main Pumps Under Full Load, Eliminate Heavy-Load Operation Jitter and Lag, Improve Overall Hydraulic Control Stability
Applicable Scenarios: Hard Soil Excavation, Rock Working Condition, Long-Term Full-Load Continuous Operation, High-Frequency Heavy Compound Action Construction
Matching Parts: Special Upgraded Supporting Pump for PVD-2B-36, PVK-2B-505 Large-Displacement Main Hydraulic Pumps

advantages

  • Upgraded Large-Flow Output, Exclusive for 4–6 Ton Heavy Excavators: Compared with the standard SG02, the SG04 increases overall flow and pressure margin, perfectly solving the problem of insufficient pilot flow and weak pressure holding when large-displacement PVD and PVK main pumps work under heavy load. It ensures synchronous and powerful response of compound actions under full-load conditions.
  • 28–32bar High Standard Pilot Pressure, No Heavy-Load Pressure Drop: The upgraded constant pressure range is higher than conventional universal pilot pumps, with stronger pressure retention ability. It effectively avoids pilot pressure fluctuation and action jitter caused by load switching, maintaining stable and consistent control performance in rock and hard soil working conditions.
  • Reinforced Heavy-Duty Structure, Strong Anti-Fatigue Ability: Thickened gear pairs and pump body structure improve overall rigidity and wear resistance. It can resist long-term high-frequency heavy-load impact and vibration, with lower performance attenuation and longer service life than ordinary pilot pumps.
  • High-Temperature Resistant Sealing, Adaptable to Severe Working Conditions: Adopting upgraded high-temperature resistant oil seal and enhanced anti-leakage structure, it maintains excellent sealing performance under long-hour high-temperature and heavy-load operation, completely solving common faults such as high-temperature internal leakage and oil seepage of ordinary pilot pumps.
  • Universal OEM Interchangeability, Simple Upgrade and Replacement: The installation size is fully universal with original parts. It supports direct plug-and-play upgrade replacement, effectively improving the hydraulic control limit of 4–6 ton excavators without modifying the machine, reducing maintenance failure rate.

FAQ

  • Q1: What is the difference between SG04 and SG02?
  • A: The SG02 is a standard universal pump for 1.5–4 ton light and medium-load excavators with conventional flow and pressure. The SG04 is an upgraded heavy-duty version with larger flow and higher 28–32bar pilot pressure, specially developed for 4–6 ton heavy-duty excavators and large-displacement PVD/PVK main pumps, solving heavy-load jitter and pressure drop problems that SG02 cannot handle.
  • Q2: Which equipment is the SG04 suitable for?
  • A: The SG04 is dedicated to 4–6 ton heavy-duty mini excavators, perfectly matching PVD-2B-36 and PVK-2B-505 large-displacement main pumps. It is the best upgraded pilot pump for large-spec micro excavators with frequent heavy-load operation.
  • Q3: What faults can SG04 effectively solve?
  • A: It perfectly solves typical heavy-load faults including weak pilot operation under full load, unsmooth compound actions, excavator jitter during hard soil and rock excavation, slow hydraulic response, and neutral drifting caused by insufficient pilot pressure of ordinary pilot pumps.
  • Q4: Why upgrade to SG04 for heavy-duty excavators?
  • A: Standard SG02 pumps have insufficient flow and pressure margin for 4–6 ton heavy-load construction, easily causing performance attenuation. The SG04 has surplus flow and pressure reserve, high-temperature and heavy-load resistance, stable long-term operation, and significantly improved control accuracy and construction stability.
  • Q5: What are the standardized maintenance tips for SG04?
  • A: Use high-cleanliness anti-wear hydraulic oil and replace filter elements regularly to avoid wear of precision gears and bushings. Avoid long-term full-load extreme impact operation. Regularly check the sealing condition to prevent high-temperature internal leakage, ensuring long-term stable heavy-load pilot pressure output.

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

Pack and ship

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