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SN, 3G Series Triple Screw Pump, Lubricant Pump

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Three-Screw Pumps in Lubrication Systems, Lubricating Oil Pump, Lubrication Injection Pump


Technical Parameters of Three-Screw Pumps in Lubrication Systems
Model: 20X4-3GS100X2
Flow rate: 0.2m3/h-590m3/h
Discharge pressure: 0.6Mpa-6Mpa
Rotational speed: 970 r/min-2900 r/min
Net positive suction head: 3.5m-6m


Application of Lubricant Screw Pump
Developed for oil transmission, this lubrication pump has a specific requirement for media. For example, the temperature should not be higher than 150 ℃. The viscosity should be 3-760 cSt. The media should contain no particles and be non-corrosive.
Applications are found in hydraulic engineering, fuel oil transmission, heavy-duty machinery, shipping, offshore engineering, printing, chemical engineering and petroleum.


Hydraulic transmission oil


Hydraulic oil


Lube oil





Description of Lubricant Screw Pump
SN, 3G triple screw pump produced by Life Company is a kind of positive displacement pumps. The driving screw and driven screw mesh well with each other and form several chambers along with the pump body. Liquids are sucked from the inlet, transferred by different chambers and finally to the outlet. In the transmission process, the liquid pressure has been boosted meanwhile a continuous, stable and linear transferring method has been achieved. This lubricant has a flow rate range of 0.2-590m/h, maximum working pressure of 100bar and highest working temperature of 150 ℃.


Good Advantages of Screw Type Lubricant Pump
1. Compact structure. Triple screw pumps we produce are usually classified into three types. The first type is small flow type, with a flow rate of 0.2-6.5m/h. The integrated pump body and bushing, along with mechanical sealing manner, provide wonderful sealing performance. The second one is medium flow pump, which is installed with an independent part for sealing. Large flow screw pump is the last type and has a horizontal installation method. According to properties of media, it has mechanical and packing sealing fashions. Additionally, the lubrication injection pump can be installed in either horizontal or vertical direction. AC and DC motors are available.
2. Long lasting. Because the driving screw is driven by motor and the driven screw by transferred lube oil, there is no direct contact between them. Such a design makes it possible to reduce harms by frequent friction and increases the service life. What's more, the lube oil also provides a film separating each component, further prolonging the already long lifespan.
3. High stability. In this triple screw pump, the oil will be transferred in a uniform and linear manner, thereby ensuring low pressure fluctuation, extremely stable flow, low noise, low inertia, little vibration and low starting torque.
4. Wonderful suction capacity. It saves us a lot on time and labor cost.
5. High degree of security. A protective valve has been equipped to ensure safety of motor and pipeline. While pressure exceeding the set value, high-pressure oil will flow back to fuel tank.

SN, 3G Series Triple Screw Pump, Lubricant Pump

Good Quality Configurations of Lubricating Oil Pump
Both driving shaft and driven shaft have been quenching, rough turning, finish turning, tempering and nitriding, thus ensuring excellent characteristics.
Well processed pump body, valve and cover are stable and reliable.
Finish processed by cutting-edge machining equipment, the valve core is good quality and highly precise.











Click here for about product manufacture.


Since our inception in 1998, Life has been working on the design and manufacture of industrial transfer pumps. With 18 years of technical expertise and practical experience, we are able to make a great number of premium quality transfer pumps which include: fuel transfer pumps, lube oil pumps, screw pumps, etc. In addition, tailor made oil transfer pumps are welcomed. Up to now, we have realized an annual production of 100,000 oil pumps, many of which have been sold to over 20 countries and regions, like the Middle East, U.S., Europe, etc.


Lubricants Pumping Applications







Specifications of Triple Screw Pump for Lube Oil Delivery



Model Discharge pressure MPa Flow rate Rotational speed r/min Net positive suction head /m Efficiency /% Motor
m3/h L/min Power/ KW Model
20X4 1.0 2.5 0.4 0.3 0.6 5.0 1450 3.5 37.4 41.7 0.55 0.75 801-4B5 802-4B5
1.0 2.5 1.0 0.8 16.6 13.3 2900 4 40.8 50.5 0.75 1.5 801-2B5 90S-2B5
20X6 4 6 0.3 0.2 5.0 3.3 1450 3.5 41.7 24.7 1.1 1.5 90S-4B5 90L-4B5
4 6 0.8 0.6 13.3 10 2900 4 52.3 37.4 2.2 3.0 90L-2B5 100L-2B5
25X4-46 1.0 2.5 0.8 0.6 13 10 1450 4 62 60.6 0.75 1.5 Y802-4 Y90L-4
1.0 2.5 2.0 1.6 33 26 2900 4.5 59.4 69 1.5 3 Y90S-2 Y100L-2
25X6-46 4 6 0.6 0.4 10 6.6 1450 3.5 42 32 2.2 3 Y100L1-4 Y100L2-4
4 6 1.6 1.4 26 23 2900 4 52 47 4 5.5 Y112M-2 Y132S1-2
30X4-46 1.0 2.5 1.6 1.2 26 20 1450 4.5 63.5 61 1.1 2.2 Y90S-4 Y100L1-4
1.0 2.5 3.6 3.2 60 53 2900 5 60 69 2.2 4 Y90L-2 Y112M-2
36X4-46 1.0 2.5 2.8 2.4 46 40 1450 4.5 66 66.5 2.2 4 Y100L1-4 Y112M-4
1.0 2.5 6.5 6 108 100 2900 5 60.5 72 4 7.5 Y112M-2 Y132S2-2
36X6A-46 4.0 6.0 6 5 100 83 2900 5.5 67 54 15 18.5 Y160M-2 Y160L-2
4.0 6.0 2.4 2 40 33 1450 5 56 43 5.5 11 Y132S-4 Y160M-4
42X4A 1.0 2.5 4.8 4.2 80 70 1450 5 55.6 62.1 4 5.5 112M-4B3 132S-4B3
1.0 2.5 10.5 10 175 166 2900 5.5 59.5 73.1 5.5 15 132S-2B3 160M2-2B3
42X6A 4 6 4.2 3.6 70 60 1450 5 62.2 60 11 15 160M-4B3 160L-4B3
4 6 10 9 166 150 2900 5.5 69.4 69.8 18.5 30 160L-2B3 200L1-2B3



Model Discharge pressure /MPa Flow rate Rotational speed r/min Net positive suction head / m Efficiency/ % Motor
m3/h L/min Power/ KW Model
45X4-46 1.0 2.5 6.3 5.9 106 99 1450 5 70 74 3 7.5 Y100L2-4 Y132M-4
1.0 2.5 13.5 13 225 217 2900 5.5 60 75 7.5 15 Y132S2-2 Y160M2-2
50X2 0.6 1.0 8.2 7.5 136 125 1450 5 52.6 52.1 3 5.5 100L2-4B3 132S-4B3
0.6 1.0 17.5 16 297 266 2900 5.5 56.1 54.9 5.5 11 132S1-2B3 160M1-2B3
50X4A 1.6 2.5 8.2 7.5 136 125 1450 5 62.8 63.5 7.5 11 132M-4B3 160M-4B3
1.6 2.5 17.5 16 291 266 2900 5.5 67 67.3 15 18.5 160M-2B3 160L-2B3
60X4-46 1.0 2.5 15.5 14.5 255 245 1450 5 71.3 74 11 15 Y160M-4 Y160L-4
1.0 2.5 32 31.5 533 525 2900 5.5 63 77 18.5 37 Y160L-2 Y200L2-2
70X2-46 0.6 1.0 1.6 24 23.5 22.5 400 290 370 1450 5 71 75 16 7.5 11 15 Y132M-4 Y160M-4 Y160L-4
70X4-46 1.0 2.5 24.5 23.5 408 392 1450 5 72.5 79 18.5 30 Y180M-4 Y200L-4
80X2-46 0.6 1.0 1.6 36.5 35 34.5 608 594 575 1450 5 72 75.5 76.5 11 18.5 22 Y160M-4 Y180M-4 Y180L-4
80X4-46 1.0 2.5 37 35 617 590 1450 5.5 72 78.1 30 45 Y200L-4 Y225M-4
85X2 0.6 1.0 28 25 466 416 970 5 59.4 69.4 11 15 160L-6B3 180L-6B3
0.6 1.0 43 40 716 666 1450 5.5 57.3 61.7 15 22 160L-4B3 180L-4B3
85X4 1.6 2.5 28 25 466 416 970 5 63.8 68.4 22 30 200L2-6B3 225M-6B3
1.6 2.5 43 40 716 666 1450 5.5 76.4 77.2 30 45 200L-4B3 225L-4B3
100X2-46 0.6 1.0 1.6 72.5 71 60.5 1208 1183 1158 1450 5 73 77 79 22 37 45 Y180L-4 Y255S-4 Y225M-4
100X4-46 1.0 2.5 72.5 70 1208 1165 1450 5.5 73 78.5 55 75 Y250M-4 Y280S-4



Model Discharge pressure MPa Flow rate Rotational speed r/min Net positive suction head / m Efficiency / % Motor
m3/h L/min Power/ KW Model
100X2-46 0.6 1.0 94 90 1566 1500 1450 5.5 73 77 30 45 Y200L-4 Y225M-4
110X4-46 1.6 2.5 94 90 1566 1500 1450 5.5 73 78 75 90 Y280S-4 Y280M-4
S100X3 0.6 1.0 1.6 72 70 69 1196 1160 1145 1450 6 62 72 74 22 55 75 Y180L-4 Y250M-4 Y280S-4
S120X3 0.8 1.5 2.5 123 120 115 2055 2010 1920 1450 6 74.5 76 78.5 55 90 132 Y250M-4 Y280M-4 Y315M-4
3GS160DX3 0.6 1.0 1.6 194 186 180 3230 3096 2997 970 6 67.4 78.3 81.6 55 75 110 280M-6B3 315S-6B3 315L1-6B3
0.6 1.0 1.6 300 292 280 5000 4866 4662 1450 6 73.5 77.5 77.8 75 110 200 280S-4B3 315S-4B3 355S2-4B3
3GS200DX3 0.6 1.0 1.6 380 370 360 6327 6160 5994 970 6 70.4 76.1 74.4 110 160 315L1-6B3 355S2-6B3
0.6 1.0 1.6 590 570 550 9823 9490 9157 1450 6 72.8 79.2 76.4 160 250 315L1-4B3 355S4-4B3
3GS100X2 0.6 1.0 1.6 90 86 80 1500 1433 1333 970 6 57.7 73.5 82.7 30 37 55 225M-6B3 255M-6B3 280M-6B3
0.6 1.0 1.6 146 140 132 2433 2333 2200 1450 6 69.5 77.8 73.3 45 55 90 225M-4B3 250M-4B3 280M-4B3
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