Oil-Free Screw Vacuum Pump Technology | China Suppliers & Factory for High-Performance Vacuum Solutions
01
Simple and compact structure
Composed of counter-rotating screws, pump body, end cover, sealing components, etc., the structure is very simple
02
Independently produced and manufactured
Independently produced and manufactured, with over 40 patent technologies, rated as a high-tech enterprise and a science and technology enterprise, and has passed ISO9001 quality management system certification
03
No friction in the pumping chamber
There is a certain gap between the screw and the pump body
04
High vacuum degree
A single screw dry vacuum pump can replace a three-stage Roots pump water ring vacuum unit
Product Parameters
| Model Number |
Vacuum Extraction RateL/S | PowerKW | Limiting PressurePa | Speedrpm | Cooling WaterL/min |
|---|---|---|---|---|---|
| LGB-10 | 10 | 1.1 | 5 | 2900 | 0 |
| LGB-15 | 15 | 1.5 | 5 | 2900 | 0 |
| LGB-20 | 20 | 2.2 | 5 | 2900 | 0 |
| LGB-50 | 50 | 5.5 | 5 | 2900 | 8 |
| LGB-80 | 80 | 7.5 | 5 | 2900 | 10 |
| LGB-120 | 120 | 11 | 5 | 2900 | 12 |
| LGB-150 | 150 | 15 | 5 | 2900 | 14 |
| LGB-200 | 200 | 18.5 | 5 | 2900 | 18 |
| LGB-220 | 220 | 22 | 5 | 2900 | 20 |
| LGB-300 | 300 | 30 | 5 | 2900 | 25 |
| LGB-400 | 400 | 37 | 5 | 2900 | 30 |
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Frequently Asked Questions
Q1 What is the vacuum extraction rate range available for the LGB series pumps?
The LGB series vacuum pumps offer a vacuum extraction rate ranging from 10 L/S (LGB-10) up to 400 L/S (LGB-400), covering a wide range of industrial and laboratory vacuum applications.
Q2 What is the limiting pressure for all LGB series models?
All models in the LGB series share a consistent limiting pressure of 5 Pa, ensuring reliable and stable vacuum performance across the entire product line.
Q3 Do the smaller LGB models require cooling water?
No. The smaller models — LGB-10, LGB-15, and LGB-20 — do not require cooling water (0 L/min). Cooling water is only required starting from the LGB-50 model and above, with flow requirements increasing with pump capacity.
Q4 What is the operating speed (rpm) for all LGB series models?
All LGB series models operate at a standard speed of 2900 rpm, providing consistent rotational performance regardless of the pump size or power rating.
Q5 How much power does the largest model LGB-400 require?
The LGB-400, with a vacuum extraction rate of 400 L/S, requires 37 KW of power and a cooling water supply of 30 L/min to operate efficiently.
Q6 Which LGB model is best suited for medium-scale vacuum applications?
For medium-scale applications, the LGB-120 or LGB-150 models are commonly recommended. They offer extraction rates of 120–150 L/S with power consumption of 11–15 KW, balancing performance and energy efficiency effectively.