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
Dry operation
Dry operation, no need for any working medium, thus no oil pollution, no wastewater discharge, and significant energy-saving effect
03
Reliable processing accuracy
Core components are processed by imported processing equipment from Japan, with precision up to 0.001mm
04
No friction in the pumping chamber
There is a certain gap between the screw and the pump body
No friction in the pumping chamber
There is a certain gap between the screw and the pump body
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
Q
What is the limiting pressure for all LGB series vacuum pump models?
All models in the LGB series — from LGB-10 to LGB-400 — share a consistent limiting pressure of 5 Pa, making the entire range suitable for applications requiring a stable and deep vacuum level.
Q
Which LGB models require cooling water and how much is needed?
Models LGB-10, LGB-15, and LGB-20 do not require cooling water (0 L/min). Starting from the LGB-50, cooling water is required. The flow rate ranges from 8 L/min (LGB-50) up to 30 L/min (LGB-400), increasing proportionally with pump capacity.
Q
What is the operating speed (RPM) across the LGB series?
All LGB series vacuum pumps operate at a uniform speed of 2900 rpm, ensuring consistent rotational performance and mechanical stability across the entire product range.
Q
How do I select the right LGB model for my application?
Selection should be based primarily on the required vacuum extraction rate (L/S) and available power supply (KW). For smaller-scale applications, LGB-10 to LGB-20 are ideal. For industrial-scale processes requiring higher throughput, models such as LGB-300 or LGB-400 are recommended.
Q
What is the power range covered by the LGB series?
The LGB series covers a wide power range from 1.1 KW (LGB-10) to 37 KW (LGB-400), providing flexible options for both light-duty and heavy-duty industrial vacuum requirements.
Q
Are LGB series vacuum pumps suitable for continuous industrial operation?
Yes. The LGB series is engineered for reliable continuous operation. The consistent 2900 rpm motor speed, stable 5 Pa limiting pressure, and integrated cooling water systems (on larger models) ensure long-term durability and performance in demanding industrial environments.