A7H Pump0 pages

Product News
No. 10 03E

A7H Series High-Pressure Piston Pump
Release of New Products
Enhancing variety of variable piston pumps, 35MPa high pressure variable piston pump “A7H Series” is now on market.

Features
High Pressure-Large Volume Displacement
Adding to current A3H series, 180 + 270 cm3/rev displacement with
rated pres. 35MPa, Max. Pres. 40MPa pumps are now available.
Optional Through Drive
Optional through drive allows an auxiliary or outboard pump
(SAE Standard) to be directly mounted.
Fire-Resistant Fluids
Water-Glycols and Polyol Ester Type are applicable under certain condition.

Specifications
Geometric
Displacement
cm3/rev

Approx. Mass

Operating Pressure

Shaft Speed Range

Temperature

MPa

r/min

Viscosity

Range

Range

°C

mm2/s

Flange Mtg.

Foot Mtg.

-20-80

Series
Number

10-200
(2001000) (3)

150 ”01”
154 ”09”
220 ”01”
224 ”09”

220 ”01”
224 ”09”
310 ”01”
314 ”09”

Rated

Intermittent

(1)

2

Min.

Max. ( )

A7H180

180

35

40

1800

1900

A7H265

270

35

40

1200

1600

kg

(1) Ask Yuken for Max. Pres. operating condition.
(2) Max.Allowable Shaft Speed is specified when the suction pressure is -0.01 MPa ~.
(3) When the viscosity is more than 200mm2/s, system is required to be warmed up before operating at rated pressure.

Specifications for Special Fluids
Type of Fluids

Series Number

Operating Pressure
MPa

Shaft Speed Range
r/min

Rated
Water-Glycols
Polyol Ester Type

M-A7H180
M-A7H265
P-A7H180
P-A7H265

Intermittent
(1)

Min.

Max. ( )

21
21
35
35

25
25
40
40

1800
1200
1800
1200

1800
1200
1900
1600

2

Temperature
Range

°C
10-50
10-70

(1) Ask Yuken for Max. Pres. operating condition.
(2) Max.Allowable Shaft Speed is specified when the suction pressure is -0.01 MPa ~.
(3) When the viscosity is more than 200mm2/s, system is required to be warmed up before operating at rated pressure.

Application
steel mill equipment, press machines and industrial machines

Viscosity Range
mm2/s

20-200
(200-1000)(3)
10-200
(200-1000)(3)