PVM045ER08CS2B315200001AB Eaton PVM045 Hydraulic Pump 45.1cc 315bar

Product Overview

The PVM045ER08CS2B315200001AB is a high-precision, fully interchangeable replacement for the Eaton (formerly Vickers) PVM series open-circuit variable displacement axial piston pump. Designed for industrial and mobile hydraulic systems, it features a saddle-type yoke with steel-backed polymer bearings for low noise, low ripple, and high reliability. Flow is proportional to drive speed and displacement and can be steplessly varied between maximum and zero. Every unit undergoes 100% simulated operating condition testing to ensure exact dimensional, interface, control, and performance interchangeability with original Eaton PVM045 pumps—enabling true drop-in replacement. It is also compatible with related sizes including PVM018, PVM074, PVM098, PVM131, and PVM141.

Technical Specifications 

• Model: PVM045ER08CS2B315200001AB (Eaton/Vickers PVM045 series)
• Displacement: 45.1 cm³/r (2.75 in³/r)
• Nominal Continuous Pressure: 315 bar (4568 psi)
• Peak Pressure: 350 bar (5000 psi, momentary)
• Maximum Speed: 1800 rpm (E quiet valve plate); up to 2600 rpm (M high-speed version)
• Output Flow (E version at 1800 rpm): approximately 76 L/min (20 US gpm)
• Input Power (approx. at 1800 rpm, 315 bar): approximately 41 kW (55 hp)
• Control Options: Pressure compensator (A), pressure & flow compensator (B/C with/without orifice), power control, remote pressure control, etc.
• Weight (approx.): 24 kg (52 lb)
• Mounting Flange: SAE B 2-bolt
• Shaft Options: SAE splined or keyed (code 08 corresponding)
• Port Location: Side flange ports
• Circuit Type: Open circuit
• Recommended Operating Temperature: up to approx. 82–104°C
• Related Series Sizes: PVM018 (18 cm³), PVM074 (73.7 cm³), PVM098 (98.3 cm³), PVM131 (131.1 cm³), PVM141 (141 cm³)

Key Technical Advantages

1. Saddle-Type Yoke with Steel-Backed Polymer Bearings: Minimizes deflection and bearing misalignment, significantly extending bearing life and maintaining rigidity under high-pressure conditions while delivering stable, low-noise performance.
2. Low Pressure Ripple (approx. 4%) and Quiet Valve Plate (E version): Greatly reduces system shock and noise levels, making it ideal for noise-sensitive industrial environments and continuous-duty applications.
3. Versatile Control Options with Adjustable Maximum Displacement Stop: Pressure compensation, load sensing, and power-limiting controls precisely match system demand for improved energy efficiency; the adjustable max-displacement stop allows easy field fine-tuning.
4. Compact Design with High Power Density: Single control piston architecture reduces overall size for installation in confined spaces while the 315 bar nominal rating delivers higher power in a compact package.
5. Full Interchangeability and Rigorous Testing: 100% simulated condition testing guarantees exact match of mounting interfaces, shaft ends, and control ports to original equipment, minimizing downtime and retrofit costs.

Application Areas

• Injection molding machines, die-casting machines, metal forming and tube-bending equipment
• Machine tools and automated production-line hydraulic systems
• Material handling and industrial conveyor systems
• Entertainment rides, flight simulators, and other applications requiring low noise and high reliability
• Open-circuit industrial hydraulic power units needing medium-to-high pressure, quiet operation, and variable control

Expert Maintenance Tips

• Ensure absolute inlet pressure ≥0.85–1.0 bar and adequately sized suction lines to prevent cavitation; verify correct orientation of side ports.
• Fully bleed the system before initial start-up and confirm control and case drain pressures remain within limits (continuous approx. 0.5 bar, peak 3.5 bar).
• Maintain fluid cleanliness at ISO 4406 18/16/13 or better; recommended viscosity 40–160 cSt; replace filters regularly.
• Avoid prolonged simultaneous operation at peak pressure and maximum speed to maximize bearing and valve-plate life.
• Use correct seal kits during service; when using through-drive configurations, ensure torque distribution stays within allowable input and through-drive torque limits.
• Periodically inspect the yoke bearings and piston assembly for wear and operate within recommended temperature and viscosity ranges.