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Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)
Internal Gear Pumps (Single Pump)

HL Series Internal Gear Pumps
(Single Pump)

  • Employs axial and radial pressure compensation design, maintaining high volumetric efficiency even at low speeds and low viscosities.
  • Ultra-low noise, achieved through high-strength cast iron and a unique internal silencing design.
  • Minimal flow and pressure pulsation, maintaining stable flow and pressure output even at low speeds.
  • High-pressure design, with a maximum operating pressure of up to 35MPa.
  • Wide speed range, with a maximum speed of up to 3600 r/min.
  • Excellent oil suction characteristics.
  • Insensitive to oil contamination, ensuring a long service life.
  • Compact structure.
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Technical Specifications
Pump series Size Displacement (mL/r) Operating pressure (MPa) Rotation speed (rpm) Weight (kg)
Rated pressure Peak pressure Max. Min.
HL0 3.5 3.6 31.5 35 3600 400 4
5 5.2 31.5 35 3600 400 4.2
6.3 64 31.5 35 3600 400 4.4
8 8.2 31.5 35 3600 400 4.6
10 10.2 31.5 35 3600 400 4.8
13 13.3 31.5 35 3000 600 4.9
16 16.0 31.5 35 3000 600 5.2
20 20.0 25 30 3000 600 5.6
HL1 25 25.3 31.5 35 3000 200 14.5
32 32.7 31.5 35 3000 200 15
40 40.1 31.5 35 3000 200 16
50 50.7 31.5 35 3000 200 17
63 63.7 25 30 3000 200 18.5
HL2 80 81.4 31.5 35 3000 200 43.5
100 100.2 31.5 35 3000 200 45.5
125 125.3 31.5 35 3000 200 48
160 162.8 21 26 3000 200 52
HL0 Single Gear Pumps
HL0: Technical Specifications
Pump model A1 A2 A3 A4 A5 A6 A7 P A8 A9 A10 S A11 A12 A13
HL0-3.5 101.5 52.5 96 51 100.6 47 5.8 Ø9 38.1 17.5 M8 depth13 Ø14 38.1 17.5 M8 depth13
HL0-05 105.5 54.5 96 51 100.6 47 5.8 Ø11 38.1 17.5 M8 depth13 Ø14 38.1 17.5 M8 depth13
HL0-6.3 108.5 56 96 51 100.6 47 5.8 Ø11 38.1 17.5 M8 depth13 Ø19 47.6 22.2 M10 depth 15
HL0-08 113 58.25 96 51 100.6 47 5.8 Ø13 38.1 17.5 M8 depth13 Ø19 47.6 22.2 M10 depth 15
HL0-10 118 60.75 96 51 100.6 47 6.2 Ø13 38.1 17.5 M8 depth13 Ø21 52.4 26.2 M10 depth 15
HL0-13 117.5 59.25 99.6 49.8 106.6 55.8 6.2 Ø13 38.1 17.5 M8 depth13 Ø19 52.4 26.2 M10 depth 15
HL0-16 123 62 99.6 49.8 106.6 55.8 6.2 Ø13 38.1 17.5 M8 depth13 Ø19 52.4 26.2 M10 depth 15
HL0-20 131 66 99.6 49.8 106.6 55.8 6.2 Ø18 47.6 22.2 M10 depth 15 Ø26 58.7 30.2 M10 depth 15
HL1 Single Gear Pumps
HL1: Technical Specifications
Pump model A1 A2 P A3 A4 A5 S A6 A7 A8
HL1-25 139 73 Ø18 47.6 22.2 M10 depth 17 Ø32 58.7 30.2 M10 depth 17
HL1-32 146 76.5 Ø18 47.6 22.2 M10 depth 17 Ø32 58.7 30.2 M10 depth 17
HL1-40 153 80 Ø20 52.4 26.2 M10 depth 17 Ø32 58.7 30.2 M10 depth 17
HL1-50 163 85 Ø20 52.4 26.2 M10 depth 17 Ø32 58.7 30.2 M10 depth 17
HL1-63 177 92 Ø20 52.4 26.2 M10 depth 17 Ø32 58.7 30.2 M10 depth 17
HL2 Single Gear Pumps
HL2: Technical Specifications
Pump model A1 A2 P A3 A4 A5 S A6 A7 A8
HL2-80 204 109.5 Ø32 69.9 35.7 M12 depth 20 Ø50 77.8 42.9 M12 depth 20
HL2-100 213 114 Ø32 69.9 35.7 M12 depth 20 Ø50 77.8 42.9 M12 depth 20
HL2-125 225 120 Ø38 79.4 36.5 M16 depth 25 Ø63.5 88.9 50.8 M12 depth 20
HL2-160 243 129 Ø38 79.4 36.5 M16 depth 25 Ø76 106.4 61.9 M16 depth 25
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Hydraulic Components Applications
Hydraulic Components Applications

An internal gear pump consists of an inner gear and an outer gear, separated by a crescent-shaped divider. The inner gear rotates within the outer gear, trapping fluid in the spaces between the gears and the divider, moving it from the inlet to the outlet.

The maximum speed is 3600 r/min. High speeds are typically suitable for high-viscosity fluids, precision transfer and metering, and oil and gas applications.

The minimum speed is 200 r/min. Low speeds are typically applied in lubrication systems and hydraulic systems.