KHG1 KHG2 Series Gear Pump | Shimadzu KHG1-50-01R-VPC KHG1-40-01R-VPC Replacement | High Pressure Hydraulic Pump

The KHG Series (including KHG1 and KHG2) by Chengyuan Hydraulic is a line of high-pressure external gear pumps specifically engineered for heavy-duty material handling and mobile construction equipment. These pumps are designed for 100% original-place interchangeability with Shimadzu technical specifications, covering critical models like the KHG1-50-01R-VPC. By combining a high-tensile aluminum body with advanced pressure-compensated balancing plates, we ensure every pump passes 100% simulated condition testing. Our KHG series delivers premium volumetric efficiency and robust reliability under demanding operational cycles.

Technical Specifications (Bulleted List)

• Series: KHG1 / KHG2 High-Pressure Series

• Common Models: KHG1-40-01R-VPC, KHG1-50-01R-VPC, KHG2-100-01R-VPC

• Displacement Range: $25\text{ ml/rev}$ to $160\text{ ml/rev}$

• Rated Pressure: $25\text{ MPa (3625 psi)}$

• Peak Pressure: $28\text{ MPa (4060 psi)}$

• Speed Range: $500$ to $3000\text{ RPM}$

• Shaft Configuration: Keyed or Splined (VPC connection standard)

• Rotation: Clockwise (R) or Counter-Clockwise (L)

• Housing: High-strength extruded aluminum alloy

Key Technical Advantages

• Axial Pressure Compensation: Utilizing floating side plates, the pump automatically adjusts axial clearances based on operating pressure. This maintains a volumetric efficiency of over $93\%$, even at $25\text{ MPa}$ continuous duty.

• High-Load DU Bushings: Equipped with premium self-lubricating composite bearings, the KHG series handles extreme radial loads and shock pressures. This prevents shaft wear and significantly extends the service life in harsh environments.

• Precision-Ground Gear Sets: Gears are crafted from high-alloy steel with vacuum heat treatment and micron-level grinding. This minimizes flow ripple and delivers Ultra-Low Noise performance (below $78\text{ dB}$).

• Enhanced VPC Sealing Technology: The specialized VPC seal arrangement ensures zero leakage at high rotational speeds and provides superior protection against dust and contaminants in outdoor work sites.

Application Areas

• Forklifts: Primary lift and steering pumps for 3-ton to 10-ton forklifts.

• Environmental Equipment: Hydraulic power core for refuse compactors and street sweepers.

• Industrial Machinery: Power source for compact hydraulic balers and forming presses.

Expert Maintenance Tips

• Initial Priming: Before the first startup, fill the pump with clean hydraulic oil through the inlet. Rotate the shaft by hand to ensure smooth movement and lubrication of internal parts.

• Fluid Cleanliness: The KHG series requires high-quality fluid. Maintain cleanliness to NAS Class 9 or better. Always replace return filters according to the maintenance schedule.

• Case Temperature: Ensure operating temperatures stay between $-20\text{°C}$ and $80\text{°C}$. If the case becomes excessively hot, inspect the suction line for potential cavitation issues.