PV23 Hydrualic charge pump
4 week ago
Product details
PV23 Hydraulic Charge Pump: Core Analysis
The PV23 hydraulic charge pump is a critical component in Sauer-Sundstrand’s Series 20 closed-loop hydraulic systems, widely used in construction machinery, industrial equipment, and agricultural machinery. It provides stable charge pressure and flow support to maintain system performance.
I. Core Functions
1. Charge Function
• In closed-loop systems, a portion of oil from the main pump returns to the low-pressure side. The PV23 continuously replenishes hydraulic fluid to the low-pressure side, maintaining stable system pressure and preventing cavitation or air ingestion due to insufficient oil.
• Charge pressure is typically set at 20%-30% of system operating pressure to ensure the main pump’s suction port remains fully filled.
2. Cooling & Filtration
• The charge pump introduces low-temperature hydraulic fluid into the system, aiding heat dissipation and reducing main circuit oil temperatures to extend component lifespan.
• When paired with filters, it removes contaminants, keeping the system clean.
3. Control Pressure Support
• Provides a stable pressure source for control mechanisms (e.g., servo valves, proportional valves) in variable-displacement pumps, ensuring precise displacement adjustment.
II. Technical Specifications
【表格】
Parameter Category Details
Displacement 89 cm³/rev (may vary slightly by model), suitable for medium-to-large hydraulic systems.
Pressure Ratings Rated pressure: 21 MPa (210 bar); peak pressure: 35 MPa (350 bar), meeting high-load demands.
Speed Range Typically 1,000–3,000 rpm, compatible with motor or engine drive speeds.
Structural Design Axial-piston variable-displacement pump with adjustable swashplate angle; supports bidirectional rotation.
Mounting Type Flange-mounted for easy connection to drive shafts; SAE standard straight-thread ports for reliable sealing.
Materials & Process Pump body in cast iron or aluminum alloy; precision-machined key components (e.g., pistons, swashplate) with surface treatments for wear and corrosion resistance.
III. Typical Applications
1. Construction Machinery
• Concrete Mixer Trucks: Drives hydraulic motors for rotating the mixing drum while providing charge pressure for the travel system.
• Rotary Drilling Rigs: Powers main hoist and rotation mechanisms for precise drilling.
• Road Rollers: Actuates vibratory wheels for high-frequency compaction.
2. Industrial Equipment
• Plastic Machinery: Supports hydraulic systems in injection molding machines for smooth mold opening/closing and injection.
• Machine Tools: Drives hydraulic chucks or tailstocks for workpiece clamping and positioning.
3. Agricultural Machinery
• Combine Harvesters: Provides hydraulic power for header lifting and travel systems to enhance operational efficiency.
• Tractors: Powers hydraulic hitches for adjusting implement lift and tillage depth.
IV. Selection & Usage Considerations
1. Model Selection
• Choose displacement based on system pressure/flow requirements (e.g., PV23 for medium-to-large systems; PV20/PV22 for lighter loads).
• Confirm drive method (motor or engine) and speed range to avoid overspeed or low-speed operation.
2. Installation & Commissioning
• Ensure pump shaft alignment with drive shaft ≤0.1mm to prevent vibration-induced bearing damage.
• Prime the system via the charge pump before initial startup to eliminate air pockets and cavitation.
• Adjust relief valve pressure to system specifications; avoid prolonged overload operation.
3. Maintenance & Upkeep
• Replace hydraulic oil every 1,000–3,000 operating hours or 6 months; clean filters regularly.
• Inspect port seals for leaks, which may cause pressure drops.
• Monitor pump temperature; abnormal heating may indicate cooling issues or internal wear.
V. Market Reputation & Advantages
• High Reliability: Sauer-Sundstrand pumps are renowned for precision manufacturing and durability, with lower failure rates than competitors.
• Energy Efficiency: Variable-displacement design reduces energy waste, lowering operational costs.
Similar Video Recommendation
<
>
Bossgoovideo.com Contact Now
If you are interested in the product, contact Bossgoovideo.com for more information
- *To:
- Ningbo Hengnuo Hydraulic Drive Co.,Ltd
- *Message:
-
Submit
Disclaimer :
The information of Bossgoovideo.com limited shown above is provided by the user or collected on the network. Video 2B does not guarantee the authenticity,accuracy and legitimacy of Bossgoovideo.com limited information. Video 2B does not involve legal relationships and disputes between users arising from
transactions other than secured transactions on this website. Disputes shall be settled by you through negotiation.
If you are the person in charge or relevant employee of this enterprise, if you find that the enterprise information is incorrect or want to manage thiscompany, please contact us jacklee1558@gmail.com, after you claim the enterprise, you can obtain management permission, publish supplyand demand information, bring consulting orders, and remove page advertisements.
Suppliers
Ningbo Hengnuo Hydraulic Drive Co.,Ltd
Audited supplier
4 year
Main Product:
hydraulic motor,
gear box,
hydraulic pump,
hydraulic valve ,
hydraulic winch,
hydraulic system