
Gear Pumps
C
C-1
IPH SERIES IP PUMP
IPH Series
IP Pump
3.6 to 125.9cm
3
/rev
30MPa
Features
Specifications
This is a new design series in which all pump types are installation compatible with previous designs. Note, however, that there is no
longer compatibility for some of the seal components between the IPH-3 and IPH-4 sizes and design numbers 10 and 12
.
q
A patented axial and radial pressure load-
ing system provides high efficiency and
generates pressures up to 30MPa
{306kgf/cm
2
}.
w
Outstanding durability and very long life.
e
A modified involute short-tooth gear
enables internal gearing for greatly
reduced pulsation and noise, and excep-
tionally quiet operation.
r
A simple structure makes maintenance and
inspection easier.
Model No.
Capacity
cm
3
/rev
Rated Voltage
MPa
Maximum Operating
Pressure
MPa{kgf/cm
2
}
Minimum Revolution
Speed
min
−
1
Maximum Revolution
Speed
min
−
1
Weight kg
Type A Type B
IP
H-2A(B)-
3.5-11 3.60
25 {255} 30 {306} 600 2000
4.4 2.4
5 5.24 4.5 2.5
6.5 6.55 4.6 2.6
8 8.18 4.8 2.8
I
PH-3A(B)
- 10-20 10.2
25 {255} 30 {306} 600 2000
10.5 4.8
13 13.3 10.7 5.0
16 15.8 11.0 5.3
I
PH-4A(B)
- 20-20
20.7
25 {255} 30 {306} 500 2000
15.2 9.5
25 25.7 15.7 10.0
32 32.3 16.2 10.5
IPH-5A(B)-
40
-21(11)
40.8
25 {255} 30 {306} 400 2000
32.0 19.0
50 50.3 33.0 20.0
64 63.9 34.0 21.0
IPH-6A(B)- 80-21(11)
81.3
25 {255} 30 {306} 300 2000
62.0 39.0
100 101.6 64.0 41.0
125 125.9 66.0 43.0
Note) 1.Capacity: Logical discharge rate per
rotation.
2.Suction Pressure: +0.03 to +0.3MPa
{−0.3 to +0.3kgf/cm
2
}
3.Maximum working pressure shown
here is the pressure limit when there
are frequent pressure changes.
4.Avoid installation with the suction port
towards the bottom of the pump.
5.Specify using the model number format
shown below when pipe flanging is
required.
¡Handling
zFor the hydraulic operating fluid, use
an R&O type and wear-resistant type
of ISO VG32 to 68 or equivalent (vis-
cosity index of at least 90). Use
hydraulic operating fluid that provides
kinematic viscosity during operation in
the range of 20 to 150mm
2
/s.
xThe operating temperature range is 5
to 65°C. When the oil temperature at
startup is 5°C or less, perform a
warm-up operation at low pressure
until the oil temperature reaches 5°C.
Use the pump in an area where the
temperature is within the range of 0 to
60°C.
cSuction pressure is -0.03 to
+0.03MPa (-0.3 to +0.3kgf/cm
2
), and
the suction port flow rate should be to
greater than 2m/sec.
vAvoid pulley, gear, and other drive
systems that impart a radial or thrust
load on the end of the pump shaft.
bMount the hydraulic pump so its pump
shaft is oriented horizontally. Provide
a suction strainer with a filtering grade
of about 100
µ
m (150 mesh). For the
return line to the tank, use a 25
µ
m
line filter.
nManage hydraulic operating fluid so
contamination is maintained at class
NAS10 or lower. Take care to avoid
contamination with water and other
foreign matter, and watch out for dis-
coloration. Whitish fluid indicates that
air has contaminated the fluid, and
brownish fluid indicates the fluid is dirty.
IPH 4 25 LT––––20B
IPH Series IP Pump
Size 2, 3, 4, 5, 6
Understanding Model Numbers
(Continued on following page)
C Gear Pumps(P01-13)_E.q 03.11.20 1:20 PM Page 1