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NACHI IPH series gear pump
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Description
NACHI IPH Series Gear Pump Specifications
Product Features
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A patented axial and radial pressure loading system ensures high efficiency, with a maximum operating pressure of up to 30MPa (306 kgf/cm²).
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Excellent durability and an exceptionally long service life, suitable for continuous operation in harsh working conditions.
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Modified involute short-tooth gear design realizes internal gearing, significantly reducing pulsation and noise for ultra-quiet operation.
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Simple structural design facilitates convenient maintenance and inspection, lowering downtime and maintenance costs.
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All pump types are installation-compatible with previous designs, enabling easy replacement and upgrade.
Core Specifications
|
Model No.
|
Capacity (cm³/rev)
|
Rated Pressure (MPa)
|
Max. Operating Pressure (MPa {kgf/cm²})
|
Min. Revolution Speed (min⁻¹)
|
Max. Revolution Speed (min⁻¹)
|
Weight (kg) – Type A
|
Weight (kg) – Type B
|
|---|---|---|---|---|---|---|---|
|
IPH-2A(B)-×-11
|
3.60
|
25
|
30 {306}
|
600
|
2000
|
4.4
|
2.4
|
|
5.24
|
4.5
|
2.5
|
|||||
|
6.55
|
4.6
|
2.6
|
|||||
|
8.18
|
4.8
|
2.8
|
|||||
|
IPH-3A(B)-×-20
|
10.2
|
25
|
30 {306}
|
600
|
2000
|
10.5
|
4.8
|
|
13.3
|
10.7
|
5.0
|
|||||
|
15.8
|
11.0
|
5.3
|
|||||
|
IPH-4A(B)-×-20
|
20.7
|
25
|
30 {306}
|
500
|
2000
|
15.2
|
9.5
|
|
25.7
|
15.7
|
10.0
|
|||||
|
32.3
|
16.2
|
10.5
|
|||||
|
IPH-5A(B)-×-21(11)
|
40.8
|
25
|
30 {306}
|
400
|
2000
|
32.0
|
19.0
|
|
50.3
|
33.0
|
20.0
|
|||||
|
63.9
|
34.0
|
21.0
|
|||||
|
IPH-6A(B)-×-21(11)
|
81.3
|
25
|
30 {306}
|
300
|
2000
|
62.0
|
39.0
|
|
101.6
|
64.0
|
41.0
|
|||||
|
125.9
|
66.0
|
43.0
|
Model Number Explanation
Example: IPH – 4B – 25 – LT – 20
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IPH: Series name
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4: Pump size (2, 3, 4, 5, 6)
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B: Mounting method (A: Foot type; B: Flange type)
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25: Capacity (cm³/rev)
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L: Rotation direction (None: Clockwise viewed from shaft end; L: Counterclockwise viewed from shaft end)
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T: Auxiliary symbol (T: With screw-in type flange kit; E: With welded type flange kit; auxiliary symbols must be in alphabetic order)
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20: Design number (11: 2A(B), 5B, 6B; 20: 3A(B), 4A(B); 21: 5A, 6A)
Important Notes
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Capacity refers to the logical discharge rate per rotation.
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Suction pressure range: +0.02 to +0.3 MPa (-0.2 to +0.3 kgf/cm²).
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The maximum working pressure indicated is the limit for conditions with frequent pressure changes.
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Avoid installing the pump with the suction port facing downward.
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Specify the model number in the format above when pipe flanging is required.
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Hydraulic fluid: Use R&O type and wear-resistant ISO VG 32 to 68 (viscosity index ≥ 90) or equivalent. The kinematic viscosity during operation should be 20 to 150 mm²/s.
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Operating temperature range: 5 to 65 °C. If the oil temperature at startup is ≤ 5 °C, perform warm-up operation at low pressure first.
Supplementary Specifications (Partial Models)
For model IPH-6B-125-11:
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Material: Cast iron
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Maximum operating pressure: 4350 psi
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Pressure rating: 3045 psi
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Shaft side discharge rate: 24.8 to 38.7 GPM
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