A37 series yuken Variable piston pump

YUKEN A series variable piston pumps have a wide range of displacement, ranging from 10cm3/rev to 219cm3/Rev. Common displacement includes：
A10 series :  displacement 10.0cm3/rev
A16 series :  displacement 15.8cm3/rev
A22 series :  displacement 22.2cm3/rev
A37 series :  displacement 36.9cm3/rev
A56 series :  displacement 56.2cm3/rev
A70 series :  displacement 70.0cm3/rev
A90 series :  displacement 91.0cm3/rev
A145 series :  displacement 145cm3/rev

The specifications of YUKEN A37 series variable piston pumps are as follows：
1. Core specifications
Displacement range
Standard displacement: 37 cm3/rev (some models can reach 45 or 56 cm3/rev).
The displacement of the example model A37-L-R-04-B-K-32 is 36.9 cm3/rev, which is close to the standard value of 37 cm3.
Pressure level
Class B: 1.5~7 MPa (such as model A37-L-R-04-B-K-32).
Class C: 1.5~16 MPa (such as model A37-L-R-04-C-S-K-32).
Class H: 1.5~21 MPa (such as model A37-F-R-04-H-K-32393).
The maximum pressure can reach 400 Bar (system configuration support required).
Control method
Pressure compensation control type (if the model contains “01”).
The electro-hydraulic proportional load-sensitive control type (such as “04” in the model) supports precise adjustment of flow and pressure.
Installation form
Flange installation (F): such as model A37-F-R-01-C-K-32.
Foot seat installation (L): such as model A37-L-R-04-B-K-32.
Direction of rotation
Clockwise (R): Such as model A37-F-R-01-C-K-32.
Counterclockwise (L): Need to be confirmed according to the model.
Shaft extension form
Flat key (K): such as model A37-L-R-04-B-K-32.

2. Typical application areas
Construction machinery: hydraulic power source for excavators, loaders and other equipment.
Metallurgical industry: high-pressure hydraulic system for steel plants.
Petrochemical industry: hydraulic control of reactor, die-casting machine and other equipment.
Aerospace: Precise control of the hydraulic system of the aircraft.
Environmental protection and machine tools: hydraulic elevators, environmental protection factories and hydraulic drives for machine tools.

3. Analysis of model examples
Take the model A37-L-R-04-C-S-K-32 as an example：
A37: A series variable piston pump with a displacement of 37 cm3/Rev.
L: Foot seat installation.
R: Rotate clockwise.
04: Electro-hydraulic proportional load sensitive control type.
C: Pressure level 1.5~16 MPa.
S: Side interface configuration.
K: Flat key shaft extension.
32: Design number, distinguish between different versions.