Roots vacuum pumps, also known as Roots blowers, are rotary plunger-type pumps where two symmetrically shaped impellers rotate in opposite directions inside the pump housing.

Characteristics:

The use of an oil-free intermediate seal, multiple sealed ways to ensure a high clean vacuum environment in the rotor chamber.
Advanced processing to ensure the good geometrical symmetry of the rotors, as well as low noise and long service life.
A special shaft seal is used to achieve long, stable running without oil leakage.
The BSJ-L series is made of all-aluminum alloy, a heat sink, corrosion-resistant, 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	BSJ150L
Pumping Rate	50 Hz	m³h^-1 / Lmin^-1	500/8330
	60 Hz		600/10000
Max Inlet Pressure	50Hz	Pa	1.3x10³
	60Hz	Pa	1.1x10³
Max Allowable differential pressure	50HZ	Pa	7.3*10³
	60HZ	Pa	6.0*10³
Ultimate Vacuum		Pa/ mbar	0.4/4×10^-3
Motor Power(2P)		kW(hp)	2.2(3.0)
Inlet		--	VG80
Outlet		--	VF80
Cooling Method		Water cooled
Oil Need		L	1.6
Ambient Temp.		℃	5~40
Weight		--	BSO-46

Note: The value of 'Ultimate Pressure' in this sheet is measured by the 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 the inlet port must be 5~30℃. When the temperature is too low, keep it in an environment that is not prone to condensation.

Performance Curve:

Dimensions:

Applications

Vacuum distillation
Vacuum packaging
Thin film coating
Freeze drying
Electrical engineering
Printing
Surface treatment technique
Wind Energy
Ceramics and glasses

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