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Oil-Free Screw Vacuum Pump Technology | China Suppliers & Factory with High Performance & Reliability

The oil-free screw vacuum pump, designed and manufactured by our factory in China, is a high-performance solution for various vacuum extraction needs. It features a robust construction, including a screw rotor, casing, gears, cooling circulation, and sealing components. The innovative design incorporates high-precision synchronous gears, enabling the drive shaft to rotate the rotors in opposite directions, facilitating efficient gas intake, compression, and exhaust, Our company proudly holds several patents for this advanced screw vacuum pump (patent numbers: ZL 2016 2 0170088.6, ZL 2018 2 1791288.9, ZL 2021 2 0388238.1, ZL 2022 2 01778327.8), reflecting our commitment to excellence in engineering. The unique profile design of our pump directly influences its superior performance metrics, such as ultimate vacuum, pumping rate, volumetric efficiency, vibration, and noise levels. As a leading supplier in the industry, we ensure that our vacuum pumps deliver exceptional stability and reliability across various environmental processes. Choose our oil-free screw vacuum pump for unmatched quality and performance from a trusted factory in China
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    Product Characteristics

    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

    Dry operation

    Dry operation, no need for any working medium, thus no oil pollution, no wastewater discharge, and significant energy-saving effect

    04

    Suitable for extracting condensable gases

    Suitable for extracting condensable gases (such as water vapor) and dusty gases

    05

    Suitable for extracting condensable gases

    Suitable for extracting condensable gases (such as water vapor) and dusty gases

    06

    one pump can solve the problem

    From the atmosphere to the ultimate pressure of 5 Pa, one pump can solve the problem

    Product Parameters

    Product Details

    LGB Series Vacuum Pump — Model Specifications

    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

    * All models operate at a uniform limiting pressure of 5 Pa and a speed of 2900 rpm. Cooling water is not required for smaller models (LGB-10 to LGB-20).

    Frequently Asked Questions (FAQ)

    Q1 What is the vacuum extraction rate range available in the LGB series?
    The LGB series offers a wide range of vacuum extraction rates, starting from 10 L/S (LGB-10) up to 400 L/S (LGB-400), making it suitable for both small-scale and large industrial vacuum applications.
    Q2 Do all LGB series models require cooling water?
    No. The smaller models — LGB-10, LGB-15, and LGB-20 — do not require cooling water (0 L/min). Starting from LGB-50 and above, cooling water is required, with flow rates ranging from 8 L/min up to 30 L/min depending on the model.
    Q3 What is the limiting pressure for LGB series vacuum pumps?
    All models in the LGB series share a consistent limiting pressure of 5 Pa, ensuring a reliable and stable vacuum level across the entire product range.
    Q4 What is the operating speed of LGB series pumps?
    All LGB series models operate at a uniform speed of 2900 rpm, which ensures consistent performance and simplifies maintenance and spare parts management across different model sizes.
    Q5 How do I select the right LGB model for my application?
    Model selection should be based primarily on the required vacuum extraction rate (L/S) and available power supply (KW). For applications requiring higher throughput, models such as LGB-300 or LGB-400 are recommended. For lower-demand environments, LGB-10 to LGB-20 are compact and energy-efficient choices.
    Q6 What power supply is needed for the largest LGB model?
    The LGB-400, the largest model in the series, requires a power supply of 37 KW. It delivers a vacuum extraction rate of 400 L/S and requires a cooling water flow of 30 L/min for stable continuous operation.

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