PV7-1X/25-45RE01MC0-08 Rexroth Vane Pump 160bar

Product Overview

Technical Specifications

• Model: PV7-1X/25-45RE01MC0-08 (also PV7-1A/25-45RE01MC0-08)
• Material Number: R900534508
• Product Series: Bosch Rexroth PV7 Series Pilot-Operated Variable Vane Pump
• Control Type: PV7…C/D/N/W (Pilot-Operated Pressure Control)
• Component Series: 1X
• Frame Size (BG): 25
• Size: 45 cm³/rev
• Product Type: Variable Displacement Vane Pump (Open Circuit, Industrial Application)

• Maximum Operating Pressure (Outlet): 160 bar
• Inlet Pressure Range: 0.8 ~ 2.5 bar (absolute)
• Case Drain Port Maximum Pressure: 2 bar
• Maximum Geometric Displacement: 45 cm³/rev
• Maximum Flow (@1500 rpm, 10 bar, 41 cSt): 66 L/min
• Leakage Flow at Zero Stroke (@Outlet Pressure = Pmax): 5.3 L/min
• Drive Speed Range: 900 ~ 1,800 rpm
• Volumetric Efficiency: Up to 92% (axial compensation displacer)
• Direction of Rotation: Clockwise (viewed from shaft end)

• Housing Material: Cast Iron
• Seal Material: NBR (Nitrile Rubber)
• Shaft Type: Cylindrical shaft with keyway, per ISO 3019-2
• Mounting Flange: 4-bolt flange, per ISO 3019-2 and VDMA 24560/1
• Port Connection: Pipe thread (C0 code)
• Through-Drive: Supported (for multi-pump combinations)
• Weight: Approx. 21 kg
• Compatible Hydraulic Fluids: HLP, HLPD, HVLP, HVLPD (mineral oils), HETG, HEES (environmentally acceptable fluids)
• Viscosity Range: 16 ~ 160 mm²/s (at operating temperature)
• Fluid Temperature Range: -10°C ~ +70°C

• PV7 = Series Designation (Pilot-Operated Variable Vane Pump)
• 1X = Component Series (Series 1X)
• 25 = Frame Size (BG 25)
• 45 = Size Code (Maximum Geometric Displacement 45 cm³/rev)
• RE = Control Type (E = Pressure Controller, Pilot-Operated)
• 01 = Controller Component Series
• M = Seal Material (M = NBR Nitrile Rubber)
• C0 = Port Connection (C = Pipe Thread, 0 = Standard Configuration)
• 08 = Pressure Setting Range Code

Key Technical Advantages

Application Areas

• Machine Tool Industry: CNC machining centers, grinders, milling machines, and transfer machines requiring precision pressure/flow control — low hysteresis and high repeatability ensure machining accuracy
• Injection Molding & Die Casting: Multi-stage pressure/flow control for clamping, holding, and ejection — variable displacement dramatically reduces energy consumption during holding phase
• Constant Pressure Systems: Multi-actuator centralized supply systems — pressure compensation automatically reduces flow to zero during standby while maintaining system pressure
• Hydrostatic Bearings: Precision grinders and large boring machines requiring extremely low flow pulsation and high pressure stability
• Automation Lines: Robotic hydraulic drives, conveyor systems, and precision positioning systems requiring frequent start/stop and precise control
• Packaging Machinery: High-speed packaging line hydraulic drives — fast response characteristics enable precise cycle control
• Marine & Offshore: Deck machinery, steering gear, and hydraulic winches requiring reliable medium-pressure hydraulic drive

Expert Maintenance Tips

• Commissioning & Air Bleeding: All PV7 series pumps are self-priming, but the housing must be filled with hydraulic oil before initial startup. Prefill the housing through the case drain port, then jog the motor until continuous bubble-free oil flow is achieved. If the pump fails to deliver bubble-free oil within approximately 20 seconds, inspect the suction line for air leaks.
• No-Load Warm-Up: After startup or extended shutdown, the pump must be started under no-load conditions, allowing hydraulic fluid to flow at zero pressure for several seconds to ensure adequate lubrication. Run at no-load for 5 to 10 minutes until oil temperature reaches 30°C before gradually applying load. Never operate the pump without hydraulic fluid.
• Fluid Cleanliness Control: Maintain hydraulic oil cleanliness at ISO 4406 18/15 or better. The pilot controller’s precision spool and piston clearances are extremely tight — particulate contamination can cause controller sticking or sluggish response. Install a 10 μm absolute filter on the return line and inspect or replace the filter element every 250 hours.
• Viscosity & Temperature Management: Recommended fluid: ISO VG 32–68 anti-wear hydraulic oil (HLP). At operating temperature, maintain fluid viscosity within 16–160 mm²/s. Continuous oil temperature must not exceed 70°C. During cold starts, fluid viscosity may exceed the upper limit — the pump must be warmed up at low speed and low pressure before loading to rated conditions.
• Shaft Alignment: Pump-to-driver concentricity must be controlled within φ0.1 mm. A flexible coupling is strongly recommended. The PV7 series drive shaft cannot承受 radial or axial external forces — installation must ensure the shaft end is free from constraint.
• Case Drain Line Requirements: The case drain line must be piped independently back to the reservoir. Case drain back-pressure must not exceed 2 bar. The drain line outlet must be submerged below the minimum oil level in the tank. When combining multiple pumps, individual drain lines must be used — never merge drain lines, as pressure differentials can damage seals.
• Height Adjustment Screw Optimization: The height adjustment screw (7) on the PV7 series is used to optimize operating noise. During system commissioning, fine-tune this screw to find the optimal noise point. Do not over-tighten, as this may restrict the stator ring’s maximum eccentricity and reduce flow output.
• Pressure Controller Setting: At factory delivery, flow and zero stroke pressure are typically set to the maximum values for the respective size. If specific settings are required, state them clearly at the time of order, or have qualified personnel adjust via the setting screw (6) in the field.