Eternal Hydraulic EG Series Hydraulic Tractor Gear Pump
Eternal Hydraulics supply a wide range of gear pump for a variety of vehicles and industrial applications, such as hydraulic systems for agricultural machinery ( tractors and so on), construction machinery, municipal cleaning vehicles, etc. Our products can replace brands such as marzocchi, Rexroth… If you are not sure how to choose the model you need, please contact our professional staff.
EG Series Hydraulic Gear Pump are suitable for the most different application in both industrial and mobile sectors. Generally these gear pumps usually consist of a gear pair supported by two aluminum bushes, a body, a securing flange and a cover. Shaft of the driving gear projecting beyond the flange mounts a twin-lip seal ring (the inner lip being a seal and the outer being a dust seal). An elastic securing ring secures the ring in place.
Model Code
EG1 series
Technical Data
EG1 series
| Size | Displacement (in³/rev) | Max speed rpm | Max flow (gpm) | Min speed rpm | Min flow (gpm) | Min Volum. Effie.* % |
|---|---|---|---|---|---|---|
| EG1-09 | 0.95 (0.058) | 6000 | 5.7 (1.50) | 600 | 0.5 (0.14) | 90 |
| EG1-13 | 1.26 (0.077) | 6000 | 7.5 (1.99) | 600 | 0.7 (0.18) | 92 |
| EG1-16 | 1.64 (0.100) | 6000 | 9.8 (2.60) | 400 | 0.6 (0.16) | 95 |
| EG1-21 | 2.05 (0.125) | 5500 | 11.3 (2.98) | 400 | 0.8 (0.21) | 95 |
| EG1-25 | 2.56 (0.156) | 5500 | 14.1 (3.72) | 400 | 1 (0.26) | 95 |
| EG1-31 | 3.15 (0.192) | 4500 | 14.2 (3.75) | 400 | 1.2 (0.32) | 95 |
| EG1-38 | 3.80 (0.232) | 4000 | 15.2 (4.01) | 400 | 1.4 (0.38) | 95 |
| EG1-43 | 4.28 (0.261) | 3500 | 15 (3.96) | 400 | 1.6 (0.43) | 95 |
| EG1-50 | 4.97 (0.303) | 3000 | 14.9 (3.94) | 400 | 1.9 (0.50) | 95 |
| EG 1-62 | 6.21 (0.379) | 2700 | 16.8 (4.43) | 400 | 2.4 (0.62) | 95 |
| EG 1-78 | 7.80 (0.476) | 2500 | 19.5 (5.15) | 400 | 3.0 (0.78) | 95 |
| EG 1-99 | 9.85 (0.601) | 2000 | 19.7 (5.20) | 400 | 3.7 (0.99) | 95 |
| Size | Displacement (in³/rev) | Max speed rpm | Max flow (gpm) | Min speed rpm | Min flow (gpm) | Min Volum. Effie.* % |
|---|---|---|---|---|---|---|
| EG2-04 | 4.2 (0.27) | 4000 | 16.8(4.44) | 500 | 2.1(0.55) | 93 |
| EG2-06 | 6.2 (0.51) | 4000 | 24.8（6.55） | 500 | 3.1(0.82) | 94 |
| EG2-08 | 8.3 (0.100) | 3500 | 29.0（7.66） | 500 | 4.2(1.11) | 95 |
| EG2-11 | 11.1 (0.68) | 3500 | 38.9（10.28） | 500 | 5.6(1.48) | 95 |
| EG2-14 | 14.2 (0.87) | 3500 | 49.6（13.10） | 500 | 7.1(1.88) | 95 |
| EG2-17 | 16.7 (1.02) | 3500 | 58.5（15.45） | 500 | 8.4(2.22) | 95 |
| EG2-20 | 19.6 (1.20) | 3300 | 64.7（17.09） | 500 | 9.8(2.59) | 95 |
| EG2-23 | 22.7 (1.39) | 2800 | 63.6（16.8） | 500 | 11.4(3.01) | 95 |
| EG2-26 | 26.1 (1.59) | 2500 | 65.2（17.22） | 500 | 13.0(3.43) | 95 |
| Size | Displacement (in5/rev) | Max speed rpm | Max flow (gpm) | Min speed rpm | Min flow (gpm) | Min Volum. Effie.* % |
| EG3-19 | 19.05 (1.22) | 3500 | 66.7 (17.6) | 700 | 13.3 (3.51) | 95 |
| EG3-22 | 22.2 (1.42) | 3500 | 77.8 (20.5) | 700 | 15.6 (4.12) | 95 |
| EG3-28 | 28.3 (1.82) | 3300 | 93.5 (24.7) | 700 | 19.8 (5.23) | 95 |
| EG3-33 | 33.2 (2.13) | 3300 | 109.4 (28.9) | 700 | 23.2 (6.12) | 95 |
| EG3-37 | 37.2 (2.38) | 3300 | 122.6 (32.4) | 700 | 26.0 (6.86) | 95 |
| EG3-44 | 43.98 (2.82) | 3000 | 131.9 (34.8) | 700 | 30.8 (8.13) | 95 |
| EG3-52 | 51.9 (3.33) | 3000 | 155.6 (41.1) | 700 | 36.3 (9.58) | 95 |
| EG3-61 | 61.4 (3.94) | 2500 | 153.5 (40.5) | 700 | 43.0 (11.35) | 95 |
| * Volumetric efficiency at 1500 rpm | ||||||
→EG1/2/3 Series Hydraulic Tractor Gear Pump PDF
Features of EG Tractor Aluminum Gear Pump
The body of the pump is made of special hi-resistant aluminum alloy obtained through extrusion process, while flange and cover are made out of spheroidal cast iron; this in order to ensure minimized deformation even when subject to high pressure, be it continuous or intermittent or peak pressure.
Gears are made of special steel. Their manufacturing process includes casehardening and quench hardening. Then gears are ground and fine finished so to have a high degree of surface finishing. Proper tooth profile design and geometric proportions ensure low pulsation levels and low noise levels during pump operation.
Bushings are made of special low-friction and hi-resistant aluminum alloy and manufactured from die-casting. Besides they are equipped with antifriction DU bearings. Special compensation zones onto bushings, insulated by special preformed seals with anti-extrusion ring, allow fully free axial and radial movement to the bushes, which is proportional to pump operating pressure. In this way, internal dripping is dramatically reduced, thus ensuring very good pump performance (both in terms of volume and in general) and proper lubrication of pump moving parts.
External gear pumps are the most popular pumps used in modern hydraulic systems. They feature versatility, strength and long useful life. Their simple construction ensures limited purchase costs and servicing. Thanks to these basic concepts, together with ever-improving product design and features, research-based on many years of experience, accuracy in material selection, production process followed in great detail and tests on mass-produced parts, our gear pumps have reached top quality standards.
For this reason, our products can work under heavy operating conditions and transmit high hydraulic power. Furthermore, our pumps feature good hydraulic, mechanical and volumetric efficiency, low noise level and, last but not least, compact dimensions.
