Danfoss 42R series Hydraulic piston pump
3 month ago
Product details
Hydraulic piston pump Sauer42R series 42R28, 42R32, 42R41, 42R51
42L series 42L28, 42L32, 42L41, 42L51
Description
Size 28, 32, 41, 51
Series 42
Maximum loads of 345 bar (5000 psi)
Control types: MDC, FNR, NFPH, NFPE, HC-EDC, EDC
Variable displacement axial piston pump of swash plate design The Series 42 pumps are advanced hydrostatic units designed for "medium power" applications with maximum loads of 350 bar (5000 psi). These pumps can be combined with a suitable Sauer-Sundstrand motor or other products in a system to transfer and control hydraulic power. The Series 42 variable displacement pump is a compact, high power density unit, using the parallel axial piston / slipper concept in conjunction with a tillable swash plate to vary the pump's displacement. Reversing the angle of the swash plate reverses the flow of oil from the pump, and thus reverses the direction of rotation of the motor output. Series 42 pumps provide an infinitely variable speed range between zero and maximum in both forward and reverse modes of operation. Series 42 pumps utilize a cradle swash plate design with a hydraulic servo control cylinder. Control is provided through a compact servo control system. A choice of servo controls are available.
These include mechanically- or electrically-actuated feedback controls, hydraulic or electric proportional controls, and a three-position electric control. These controls are designed for low hysteresis and responsive performance.
- Series 42 - Advanced Technology Today
- 2 Sizes of Variable Displacement Pumps
- Complete Family of Control Systems
- Proven Reliability and Performance
- Optimum Product Configurations
- Compact Profile
- Quiet Operation
I. Product Overview
The Danfoss Series 42 axial piston pump is a high-performance hydrostatic unit specifically designed for medium-power applications, suitable for both open and closed hydraulic circuit systems. Featuring an advanced axial piston/slipper design combined with a tiltable swashplate mechanism, this series achieves precise displacement adjustment by varying the swashplate angle. Its core advantages lie in its compact structure and high power density, enabling stable and efficient hydraulic power delivery under medium-to-high pressure conditions.
II. Core Performance Parameters
1. Pressure Range
• Maximum operating pressure reaches up to 415 bar (6,017 psi) for 28/41 cm³ displacement models and 350 bar (5,075 psi) for the 51 cm³ model, meeting the demands of most industrial hydraulic systems.
2. Displacement Range
• Available in three displacement options: 28 cm³, 41 cm³, and 51 cm³, covering a wide range of applications.
3. Speed Range
• Rated speed typically ranges from 700 to 3,450 rpm, depending on the model and operating conditions, supporting high-speed operation requirements.
4. Control Modes
• Supports multiple control methods, including mechanical feedback control, electro-feedback control, hydraulic or electric proportional control, and three-position electric control, enabling precise flow regulation for different systems.
5. Efficiency
• High volumetric and mechanical efficiency minimize energy losses and reduce operational costs.
III. Technical Advantages
1. Compact Design
• Integrated design reduces the number of components, saving installation space and facilitating system layout.
2. High Reliability
• Key components such as the swashplate, pistons, and slippers are manufactured from high-quality materials, ensuring long-term stable operation and minimizing failure rates.
3. Precise Control
• Advanced servo control systems enable precise flow regulation with fast response times and high control accuracy.
4. Low-Noise Operation
• Optimized design reduces vibration and noise, enhancing operational comfort.
5. Easy Maintenance
• Modular design simplifies disassembly and repair, reducing maintenance costs and downtime.
IV. Applications
1. Industrial Hydraulic Systems
• Widely used in machine tools, injection molding machines, metallurgical equipment, and other applications requiring high pressure, large flow rates, and precise flow control.
2. Mobile Equipment
• Suitable for construction machinery, agricultural equipment, and other mobile devices, providing efficient and reliable hydraulic power.
3. Marine Engineering
• Used in critical systems such as steering gears and deck machinery on ships and offshore platforms.
V. Typical Configurations and Options
• Control Options: Choose from mechanical feedback, electro-feedback, proportional control, or three-position electric control based on application requirements.
• Integrated Functions: Options include integrated flush valves and auxiliary mounting pads to simplify system design.
• Mounting Forms: Supports various mounting methods to accommodate different spatial layouts.
VI. Selection Recommendations
1. Define Operating Requirements: Select the appropriate model based on the system's maximum pressure, flow rate, and speed range requirements.
2. Consider Control Modes: Choose the control method based on the precision and responsiveness required for flow regulation.
3. Evaluate Environmental Adaptability: For high-temperature, high-pressure, or corrosive environments, select models with corresponding protection ratings.
4. Maintenance and Cost: Consider the pump's maintenance convenience and total cost of ownership (TCO) to choose a cost-effective solution.
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