液压知识堂

yuken hydraulic pump pv2r1、pv2r2

更新时间：2026-04-16 10:37:57

Yuken Hydraulic Pump PV2R1 & PV2R2

The Yuken PV2R1 and PV2R2 series are high-pressure fixed displacement vane pumps developed by Yuken Japan, designed specifically for low-noise and high-efficiency applications, and widely used in hydraulic systems. Both belong to the PV2R series, sharing the same core technology, but there are obvious differences in displacement range, dimensional specifications and application scenarios.

I. Core Technical Features

Feature	Description
Design Concept	Adopts a high-order equation stator curve to achieve low-noise operation (reduced by about 5-10dB compared with traditional vane pumps)
Structural Advantage	Internal cartridge kit structure for easy maintenance and quick replacement of core components
Pressure Rating	Rated pressure 16MPa, maximum working pressure 21MPa (high-pressure type)
Speed Range	600-2000r/min (optimal working range 1200-1800r/min)
Medium Compatibility	Suitable for various hydraulic media such as mineral oil, anti-wear hydraulic oil, and water-glycol
Mounting Method	Two options: L-type (foot mounting) and F-type (flange mounting)

II. PV2R1 vs PV2R2: Key Difference Comparison

Comparison Item	PV2R1 Series	PV2R2 Series
Displacement Range	6-44 cm³/rev (5.8-44 mL/r), including specifications such as 6, 8, 10, 12, 14, 17, 19, 23, 25, 31, 44	26-53.4 cm³/rev (26-53.4 mL/r), including specifications such as 26, 33, 41, 47, 53
Overall Dimensions	More compact in volume, smaller oil port size (usually 19mm), suitable for space-constrained occasions	Larger in size, larger oil port size (usually 25.4mm), capable of providing larger flow rate
Flow Capacity	Maximum flow rate of a single pump is about 80 L/min (at 1800rpm)	Maximum flow rate of a single pump is about 96 L/min (at 1800rpm)
Typical Applications	Small hydraulic systems such as small machine tools, automation equipment, small injection molding machines, and hydraulic workstations	Medium-sized hydraulic systems requiring large flow rates, such as medium-sized hydraulic presses (100-500 tons), bending machines, die-casting machines, and medium-sized injection molding machines

III. Model Nomenclature

Taking PV2R1-17-L-RAA-43 as an example:

PV2R1: Series code (same for PV2R2)
17: Nominal displacement (17 cm³/rev)
L: Mounting method (L=foot mounting, F=flange mounting)
RAA: Rotation direction and oil port position (R=clockwise, A=standard oil port configuration)
43: Design number

IV. Performance Parameter Overview

Series	Model Example	Displacement (cm³/rev)	Rated Pressure (MPa)	Maximum Pressure (MPa)	Speed Range (r/min)	Typical Flow Rate (L/min@1500rpm)
PV2R1	PV2R1-19	18.6	16	21	600-2000	27.9
PV2R1	PV2R1-31	31.0	16	21	600-2000	46.5
PV2R2	PV2R2-33	33.3	16	21	600-2000	49.9
PV2R2	PV2R2-41	41.3	16	21	600-2000	61.9

V. Application Scenario Recommendations

1. PV2R1 Series:

Hydraulic systems of small CNC machine tools
Auxiliary hydraulic stations for automated production lines
Clamping mechanisms of small injection molding machines
Hydraulic systems of medical equipment
Hydraulic units of agricultural machinery

2. PV2R2 Series:

Main drive systems of medium-sized hydraulic presses
Injection and clamping circuits of die-casting machines
Hydraulic systems of bending machines
Plastic molding machinery
Hydraulic stations of large-scale automation equipment

VI. Selection Points

Flow Matching: Select the appropriate displacement according to the maximum flow required by the system (considering leakage compensation, usually adding a 10-15% margin)
Pressure Adaptation: Ensure that the maximum system pressure does not exceed the rated pressure of the pump (16MPa), and the short-term peak pressure does not exceed 21MPa
Installation Space: Prioritize the PV2R1 series when space is limited, and select the PV2R2 series when large flow is required
Speed Matching: Ensure that the drive motor speed is within the range of 600-2000r/min
Medium Selection: It is recommended to use ISO VG32 or VG46 anti-wear hydraulic oil, and the working temperature should be controlled between 10-60℃

VII. Maintenance Points

Regularly replace hydraulic oil and filter elements (recommended every 2000 hours or 6 months)
Maintain oil cleanliness (ISO 4406 18/15 standard)
Avoid long-term operation under conditions exceeding the rated pressure
Ensure the pump is filled with oil before starting to avoid dry operation
Regularly check the seals to prevent leakage

上一篇：yuken hydraulic pump pv2r4-136fraa

下一篇：Yuken hydraulic pump pv2r3、pv2r4

YUKEN油研