A3H56 Series High pressure variable piston pump

YUKEN A3H series hydraulic pumps are high-pressure variable piston pumps developed by YUKEN Company. They have a variety of specifications and models. The following are introduced from four aspects: basic model, suffix combination, complete model example, and control type.：
 Basic model
The basic models of YUKEN A3H series hydraulic pumps are named according to the displacement size. Common models include：
A3H16, A3H37, A3H56, A3H71, A3H100, A3H145, A3H180

The specifications of YUKEN A3H56 series high-pressure variable piston pumps cover many aspects. The following is a summary of some key parameters.：
1. Core performance parameters
Working pressure：
Maximum working pressure: 35MPa (5080 PSI), which can meet the needs of various harsh working conditions.
Rated working pressure: Some information mentions 31.5MPa, which may be related to specific models or application scenarios.
Displacement：
Displacement range: 16~24ml/rev (Some sources also mention that the displacement range is 16~180cm3/rev, but the A3H56 series is usually located near the lower limit of this range).
Specific displacement: Depending on the model, the displacement may vary, but the A3H56 series usually has a fixed displacement value.
Flow：
Flow value: it is related to displacement and speed, and the specific flow rate needs to be determined according to the actual application.For example, there is information that the flow rate of a certain type of A3H56 pump is 56.2m3/h, but this may be a measured value under specific conditions.
Drive power：
Power range: 3~22kW, the specific power needs to be determined according to the model of the pump and the actual application.
Rotation speed：
Speed range: 1500~2000rpm, some data also mention that the maximum speed can reach 2850r/min (such as A3H56-LR09-15A4K-10 model), but usually the working speed will be lower than this value to ensure stability and life.

2. Structure and design characteristics
Pump body material: cast iron or high-strength alloy to ensure the durability and corrosion resistance of the pump.
Variable mechanism: Using advanced variable control technology, the displacement can be automatically adjusted according to load changes to achieve accurate matching and efficient use of energy.
Sealing form: Advanced sealing technology to prevent leakage and improve system efficiency.
Installation method: Flange-mounted type, easy to integrate with other components of the hydraulic system.
Pump shaft position: side vertical or vertical pump shaft, adapted to different space layout needs.

3. Control and functional characteristics
Load induction compensator: automatically adjust the displacement according to changes in the system load to achieve energy-saving and efficient operation.
Control type: Provide a variety of control types (such as FR, LR and other suffix models), corresponding to different application scenarios.
Rotation direction: Supports clockwise (R type) and counterclockwise (L type) rotation, and flexibly adapts to the direction of the motor.

4. Examples of typical models
A3H56-FR01KK-10: Flange installation, vertical pump shaft, please refer to the product manual for specific displacement, the maximum pressure is 35MPa.
A3H56-LR09-15A4K-10: Side vertical installation, flow rate 56.2m3/h (specific conditions), power 15kW, speed 2850r/min (maximum), corrosion-resistant material.