PFED-43056/022/10 ATOS PFED Double Vane Pump 55.8+21.6cc 210bar

Product Overview

The PFED-43056/022/10, PFED43085/044-1DTO and PFED43070/044-1DTO models belong to the ATOS PFED series of fixed-displacement double vane pumps. Each unit combines two PFE-type cartridges in a single body with one common inlet and two independent outlets, providing compact dual-circuit oil supply. We specialize in the R&D and manufacturing of high-pressure pumps, motors and valve blocks. Our products offer 100% drop-in interchangeability with genuine ATOS PFED units and undergo 100% simulated operating-condition testing. Featuring an eccentric pin-type vane design and precision machining, these pumps deliver high pressure, high flow, compact size, smooth operation, low noise, high efficiency and long service life, with a maximum pressure of 210 bar, ideal for multi-circuit industrial hydraulic systems.

Technical Specifications 

(Based on official ATOS technical data; theoretical values excluding efficiency and tolerances)

• Series: PFED-43 (composed of PFE-41 + PFE-31 cartridges, SAE B mounting flange)
• Typical models:
  • PFED-43056/022/10 (or PFED-43056/022/1DTO variants): First stage (shaft end) 55.8 cm³/r, second stage 21.6 cm³/r
  • PFED43085/044-1DTO: First stage 85.3 cm³/r, second stage 43.7 cm³/r
  • PFED43070/044-1DTO: First stage 69.9 cm³/r, second stage 43.7 cm³/r
• Rated / maximum pressure: 210 bar (continuous and peak)
• Speed range: 800–2500 r/min (smaller displacements); approximately 800–2000 r/min for larger sizes (e.g., 085 series)
• Control: Fixed displacement, dual independent outputs, non-reversible (rotation fixed at assembly; standard D = clockwise)
• Mounting & ports: SAE B mounting flange; one inlet + two independent outlets (port orientation adjustable)
• Shaft type: Standard cylindrical keyed (code 1) and other options
• Approximate weight: 24.5 kg
• Other: Cartridge design for quick replacement; suitable for mineral oils and synthetic fluids with similar lubricating properties

Key Technical Advantages

1. Precision dual-cartridge integration: Two independent cartridges share a common inlet in a compact body, reducing piping and installation space while providing two independent pressure and flow outputs for high engineering flexibility.
2. High-pressure efficiency and low-noise design: Eccentric pin-type vane structure combined with precision cam ring and pressure plates achieves 210 bar rated pressure, high volumetric efficiency, smooth running and low noise.
3. Long service life and easy maintenance: High-quality materials and precision machining ensure excellent wear resistance of vanes and stator; cartridges can be replaced in minutes, significantly reducing downtime and maintenance costs.
4. 100% drop-in interchangeability and simulated-condition testing: Overall dimensions, mounting interfaces, port positions and performance curves match genuine ATOS units exactly for direct replacement. Every unit undergoes 100% simulated operating-condition testing to verify pressure, flow, efficiency and sealing performance.
5. Flexible port and shaft configurations: Adjustable port orientations plus selectable shaft types and seal materials allow easy adaptation to diverse machine layouts and hydraulic fluids.

Application Areas

• Injection molding and die-casting machines: Independent multi-circuit supply (clamping, injection, ejection, etc.)
• Machine tools and industrial equipment: Main pump + auxiliary circuits, cooling and lubrication systems
• Construction machinery and special vehicles: Multi-actuator synchronized or independent drives
• Metallurgical and rubber/plastic machinery: High-pressure, high-flow dual-circuit supply applications

Expert Maintenance Tips

• Before installation, confirm rotation direction (standard D = clockwise viewed from shaft end) and port orientation match the host machine. Ensure adequate suction line diameter and proper sealing to avoid cavitation.
• Use hydraulic oil with cleanliness meeting ISO 4406 18/16/13 or better; maintain suitable viscosity at operating temperature. Run at low speed during cold starts.
• Keep inlet pressure within the recommended range (typically –0.15 to +1.5 bar) to prevent cavitation; regularly check external drain and seal condition.
• When replacing cartridges, maintain strict cleanliness and correct assembly sequence; perform air bleeding and low-pressure test run afterward.
• Perform preventive inspections every 2000–4000 hours depending on duty cycle; monitor noise, temperature and any drop in flow, and replace worn cartridges promptly.