Multiple Stage Internal Gear Pump - IG/IG

Home > Products > Pump > Internal Gear Pumps > IG/IG Internal Gear Pumps
IG/IG Internal Gear Pumps

Multiple Stage Internal Gear Pump - IG/IG

Model Code - Refer to the secondary Pump, Displacement of shaft end pump, Series No. of Secondary Pump, Internal gear pump series, Direction of Rotation (Viewed from shaft end), R: Clockwise, L: Counterclockwise, Displacement of shaft end pump Mounting type of shaft end pump, E: DIN type flange only, Series No. of shaft end pump, Internal Gear Pump Series, IGH -  H: Series, Max. 300 kgf/cm2, IGM- M: Series, Max. 205 kgf/cm2

The shaft end pump of multiple stage pump should have the largest displacement. It is also the maximum pressure of all pumps in multiple pump when the displacement is the same with all pumps. Likewise the secondary pump should have the second largest displacement of all pumps.

Dimensions

Dimensions

Model IG2 IG3 IG4 IG5 IG6
Displacement 3.5 5.5 6.5 8 10 13 16 20 25 32 40 50 64 80 100 125
A 19 19 19 19 18 18 18 20 20 20 22 22 22 26 26 26
B,D 64 69 73 78 84 90 95 102 108 116 138 145 155 171 181 193
E 24 24 24 24 28 28 28 42 42 42 39 39 39 45 45 45


Dimensions of Connecting Housing

Model C F G H I J Inlet Flange
No.2 60 22.2 47.6 M8x12 54.5 Ø20 3/4"
No.3 70 30.2 58.7 M10x14 70.2 Ø31 1-14"
No.4 70 36 70 M12x20 74.3 Ø40 1-1/2"
No.5 90 50.8 89 M12x20 90 Ø60 2-1/2"
N0.6 110 61.9 106.3 M16x23 108.3 Ø76 3"
Unit: mm

Remark of Connecting Housing:
No.2, applicable to IG*-2E(S)/IG*-2S
No.3, applicable to IG*-3E(S)/IG*-3S(2S)
No.4, applicable to IG*-4E(S)/IG*-4S(3S, 2S)
No.5, applicable to IG*-5E(S)/IG*-5S(4S, 3S, 2S)
No.6, applicable to IG*-6E(S)/IG*-6S(5S, 4S)

Dimensions - IG※5+5,(5+4)
Dimensions
Model IG5 IG4
Desplacement 40 50 64 20 25 32
A 213 220 230      
B 99 102.5 107.5      
C 114 117.5 122.5 96 99 103
D 222 229 239 189 195 203
Dimensions

 

Dimensions - IG※6+6,(6+5,6+4)
Dimensions
Model IG6 IG5 IG4
Desplacement 80 100 125 40 50 64 20 25 32
A 261 271 283            
B 120.5 125.5 131.5            
C 140.5 145.5 151.5 124 127.5 132.5 106 109 113
D 272 282 294 232 239 249 199 205 213
Dimensions
  1. Hydraulic Oil:
    Use the hydraulic oil viscosity as same as ISO 46-68. (Viscosity over 90 cSt). The hydraulic oil cleanness should be kept within NAS 1638, 9 degree.
    Optimal Operation Viscosity: 20-100 cSt.
    Maximum Operation Viscosity: 1500 cSt.
    Minimum Operation Viscosity: 15 cSt.
  2. Operating temperature: 5 to 70°C.
  3. Suction Pressure: Absolute 0.8-1.3 kgf/cm2.
  4. Filter: Suction Strainer 100um.
    Return Filter: 25 um.
    Hydraulic oil cleanness: NAS 1638 the 9th degree.
  5. Flow speed: Suction Line: 2 M/sec.
    Pressure Line: 5 M/sec.
    Return Line: 3 M/sec.
  6. Rotation:
    Do not cause any axial or radial pressure to the drive shaft. Use flexible coupling. Tighten closely the pump shaft and motor shaft. Do not use improper way to instal the pump, such as hitting. Be aware of the rotation direction of pump and motor. Any other request of installation, please consult with the suppliers.
  7. Bleed the air when pump runs for the first time.
  8. Please make sure the pump is on no-load state when starting and stop operation.
  9. Do not fasten too tight when being connected with the suction line and pressure line.
  10. Star-up operation: Follow the instruction and all other requirements before start up operation.
    a. Make sure the rotation of electric motor is correct.
    b. Check the oil level of oil tank before starting and fill the oil when it is insufficient.
    c. Repeat power on and off when pump is first running until the pump start is to supply oil.
    d. Pump should be run under no load state when starting operation.
    e. Before starting, run the pump under no-load state, bleed the air out of the circuit to prevent noise and cavitation.
    f. Be aware of the temperature variation: Once the temperature of pump is apparently higher than oil, Stop pump running
       and check all equipment closely.
    g. When staring running of pump at the first time or after repair, whole hydraulic system are liable to be contaminated.
       Please run the pump under no-load state and replace or clean all filters after 100 hours.
    h. Operation of hydraulic system should be handled by professionals.