Oil-Free Screw Vacuum Pump Technology | China Suppliers & Factory for High-Performance Solutions
01
Dry operation
Dry operation, no need for any working medium, thus no oil pollution, no wastewater discharge, and significant energy-saving effect
02
No friction in the pumping chamber
There is a certain gap between the screw and the pump body
03
Provide three corrosion-resistant material options
Nickel-phosphorus alloy, Hastelloy alloy, Teflon
04
High vacuum degree
A single screw dry vacuum pump can replace a three-stage Roots pump water ring vacuum unit
05
Low noise
generally around 80 decibels
06
Suitable for extracting condensable gases
Suitable for extracting condensable gases (such as water vapor) and dusty gases
Product Parameters
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LGB Series Vacuum Pump — Model Specifications
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| Model Number | Vacuum Extraction Rate (L/S) | Power (KW) | Limiting Pressure (Pa) | Speed (rpm) | Cooling Water (L/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 (FAQ)
Q1 What is the limiting pressure for all LGB series vacuum pumps?
All models in the LGB series — from LGB-10 to LGB-400 — share a uniform limiting pressure of 5 Pa, making the entire range suitable for applications requiring high vacuum consistency.
Q2 Which LGB models do not require cooling water?
The smaller models — LGB-10, LGB-15, and LGB-20 — operate without cooling water (0 L/min). Larger models from LGB-50 and above require cooling water, ranging from 8 L/min up to 30 L/min for the LGB-400.
Q3 What is the operating speed (rpm) across the LGB pump series?
All LGB series vacuum pumps operate at a consistent speed of 2900 rpm, ensuring stable and reliable performance across the entire model range.
Q4 How do I select the right LGB vacuum pump model for my application?
Selection should be based primarily on the required vacuum extraction rate (L/S) and available power supply. For low-flow applications, models like LGB-10 to LGB-20 are ideal. For industrial-scale processes requiring high throughput, consider LGB-200 to LGB-400.
Q5 What power supply is required for the LGB-400, the largest model?
The LGB-400 requires a power input of 37 KW, making it the most powerful model in the series. It also requires a cooling water flow of 30 L/min and delivers a vacuum extraction rate of 400 L/S.
Q6 Are LGB series vacuum pumps suitable for continuous industrial operation?
Yes. The LGB series is engineered for continuous duty in demanding industrial environments. With a stable speed of 2900 rpm, a consistent limiting pressure of 5 Pa, and scalable cooling water systems on larger units, these pumps are well-suited for semiconductor manufacturing, chemical processing, vacuum packaging, and more.