Parameter Description of YUKEN Double Vane Pump PV2R24-41-184

1. Basic Information

• Model: PV2R24-41-184
• Brand: YUKEN
• Type: Fixed Displacement Double Vane Pump
• Structure: Tandem combination (two single vane pumps share one drive shaft, with one suction port and two independent discharge ports, allowing output flow to supply separate hydraulic circuits and realize combined or independent oil supply)
• Application Scope: Hydraulic systems requiring two different flow rates and high pressure, such as large and medium-sized industrial equipment and heavy-duty hydraulic machinery.

2. Key Technical Parameters

• Geometric Displacement: The model numbers “41” and “184” represent the nominal displacement of the two single pumps respectively. The small-displacement pump (cover end pump) is 40.8 cm³/rev (40.8 ml/r), and the large-displacement pump (shaft end pump) is 183.8 cm³/rev (183.8 ml/r).
• Maximum Operating Pressure: 21 MPa (210 bar) when using anti-wear petroleum-based hydraulic oil; the maximum pressure is limited to 17.5 MPa (175 bar) for water-containing fluids and 14 MPa (140 bar) for common hydraulic oil. Proper hydraulic oil selection is crucial to ensure the pump’s maximum performance and service life.
• Rotational Speed Range: Normal operating speed range is 500 ~ 1800 r/min; the minimum allowable speed is 500 r/min to ensure stable suction and sufficient lubrication, and long-term operation shall not exceed 1800 r/min. Note that the maximum speed for the 184 displacement pump is limited to 1000 r/min to avoid excessive wear caused by high load, which is consistent with the speed characteristics of large-displacement hydraulic pumps[1].
• Weight: Approximately 66 kg (subject to the actual product, related to the installation structure, seal type and optional accessories), slightly heavier than small-displacement models in the same series due to the larger pump core size.
• Noise Level: Adopts low-noise structural design and precision manufacturing process, the specific noise value complies with industrial standards, and detailed parameters can be found in YUKEN official product manual.
• Minimum Suction Pressure: When the rotational speed is less than 1500 r/min, the minimum suction pressure is -25 kPa; when the rotational speed is 1500 ~ 1800 r/min, the minimum suction pressure is 0 kPa to avoid cavitation damage and ensure stable oil suction. Proper suction pressure can effectively prevent damage to internal components.

3. Hydraulic Oil Requirements

• Recommended Oil Type: Petroleum-based anti-wear hydraulic oil or R&O type hydraulic oil, preferably conforming to ISO VG 32 or ISO VG 46 specifications. The viscosity of hydraulic oil directly affects the pump’s suction performance and lubrication effect; too high or too low viscosity will reduce the pump’s efficiency and service life.
• Alternative Oil Types: If synthetic hydraulic oil (such as phosphate esters) is used, special fluororubber seals are required, and the model should be prefixed with “F-” when ordering. Water-glycol fluid can be used for the standard pump without additional modification, while other aqueous hydraulic fluids require consulting the manufacturer for pressure limitation to avoid component corrosion.
• Oil Viscosity & Temperature: The recommended oil viscosity range is 10 ~ 400 mm²/s (40℃), and the working temperature range of hydraulic oil is -10℃ ~ 80℃. The viscosity index of anti-wear hydraulic oil should not be less than 90 to ensure stable viscosity under different temperature conditions. Especially when starting at low speed or low temperature, the maximum oil viscosity is limited to ensure smooth start-up.

4. Installation & Operation Notes

• Avoid dry rotation and overload during operation, prevent air inhalation and excessive suction vacuum, so as to avoid wear of vanes, rotors and oil distribution plates. Excessive suction vacuum will easily cause cavitation, which seriously affects the pump’s service life.
• The pump has a specified rotation direction (clockwise when viewed from the shaft end as standard); reverse rotation is strictly prohibited, which will change the suction and discharge direction and damage internal components. Anti-clockwise rotation pumps are available on request, please consult YUKEN for details.
• During installation, the oil distribution plate and stator must be correctly positioned with positioning pins; the vane, rotor and oil distribution plate shall not be installed in reverse. When the pump is used at a speed below 1000 r/min (the maximum speed limit of the 184 displacement pump), the suction port should be installed upward to facilitate oil suction and reduce cavitation risk.
• When starting the pump initially or after long-term shutdown, an air release valve should be installed on the discharge side to release air; it is recommended to perform intermittent operation under no-load conditions for 3~5 minutes to ensure sufficient lubrication of all internal components.
• Pipe flange kits are not included with the pump; please select the appropriate flange kit according to the connection type (threaded, socket welding or butt welding) when ordering. The pipeline connection should be firm to avoid oil leakage and pressure loss.