• Ningbo Baosi Energy Equipment Co., Ltd.
    We have cooperated with BAOSI for many years. The quality of vacuum pump has been very stable and the delivery has been timely.
  • Ningbo Baosi Energy Equipment Co., Ltd.
    They're a serious, professional corporation that knows how to bring immediate solutions if inconvenience comes up. Vacuum parts that were provided by them can work in an trustworthy way.
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BSJ1200LC Hydrodynamic Coupling Mechanical Booster Roots Vacuum Pump 4140m3/H 11kW

Place of Origin China
Brand Name BSC
Certification CE
Model Number BSJ1200LC
Minimum Order Quantity 1 set
Packaging Details wooden box
Delivery Time 30 days
Payment Terms T/T
Supply Ability 200 sets per month

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Product Details
Features Heat Sink, Corrosion Resistance, Efficient Energy Saving, Unique Hydraulic Coupling Surface Painting
Color White Pumping Rate 4140 M3/h(69013L/min)
Material CAST IRON G.W. 477kgs
N.W. 425kgs Meas. 151*67*71cm
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Roots Vacuum Pump 11kW


Hydrodynamic Coupling Mechanical Roots Vacuum Pump


BSJ1200LC Roots Booster Vacuum Pump

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Product Description

Hydrodynamic coupling BSJ1200L 4140 m³/h 11kW Roots Vacuum Pump, Mechanical Booster Vacuum Pump



Description :


Roots vacuum pumps ,which are also called Roots blowers,are rotary plunger type pumps where two symmetrically shaped impellors rotate in opposite directions inside the pump housing.




  • The use of oil-free intermediate seal, multiple sealed way to ensure the high clean vacuum environment in the rotor chamber.
  • Advanced proceesing to ensure the good geometrical symmetry of the rotors,as well as low noise and long service life.
  • Special shaft seal is used to achieve the long stable running without oil leakage.
  • The BSJ-L series is made of all-aluminum alloy, heat sink, corrosion resistance, and efficient energy saving.The BSJ-LC series is made of cast iron. The unique liquid coupling method enables the pump to start directly under the atmosphere, which greatly reduces the time of pumping.
  • Compact structure, light weight, and small volume.


​Technical Parameter :


Model Units BSJ1200LC
Pumping Rate 50 Hz m³h-1 / Lmin-1 4140/69013
60 Hz 4985/83099
Max Inlet Pressure 50Hz Pa 6.0x103
60Hz Pa 5.0x103


Ultimate Vacuum


Pa/ mbar




Motor Power kW(hp) 11 (14.8)
Lubricating oil specification L BSO-46
Gear Cover L 3.5
Hydraulic L 6.5
Shaft seal reservoir L 1.5
Inlet -- ISO250
Outlet -- ISO100
Cooling Method Water cooled
Ambient Temp. 5~35



Note: The value of 'Ultimate Pressure' in this sheet is measured by Pirani gauge when the Baosi special pump oil is used,and the value should be 4x10-3 if the Mcleod gauge is used.

         The cooling water temperature of inlet port must be 5~30℃ When the temperature is too low, keep it in an environment that is not easy to condense.



Performance Curve:




Vaccum gauge:Pirani vacuum gauge

Vacuum pump oil:special oil for BAOSI vacuum pump

BSJ1200LC Hydrodynamic Coupling Mechanical Booster Roots Vacuum Pump 4140m3/H 11kW 0






 BSJ1200LC Hydrodynamic Coupling Mechanical Booster Roots Vacuum Pump 4140m3/H 11kW 1







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