Home » Products » Roots Vacuum Pump » Roots Vacuum Pump, BHR Series

Roots Vacuum Pump

, BHR Series

The BHR series vacuum booster pump combines into one unit various desirable features typically found in competitive Roots pumps available in local and international markets. These in-house developed Roots boosters run very quietly and come in various models, including BHR50, BHR65V, BHR80V, BHR100V, BHR125V, BHR150V, BHR175V, BHR200V, BHR225, BHR250V, and BHR300V.

Features of Roots Vacuum Pump
1. BHR series Roots vacuum pumps have the same construction with BHR series Roots blowers.
2. Fast startup while saving power
3. Roots vacuum pump maintains a relatively large pumping speed over a wide range of working pressure, able to quickly pump away any abrupt release of gas in the vacuum chamber.
4. Rotors are symmetrical and without unwanted vibration during rotation. The small gap that is left between the lobes as well as between the lobes and the casing is enough to ensure no rotating parts physically touch one another. Therefore, no lubrication is needed as there is no friction loss which in turn saves power.
5. No oil seal or lubrication is needed inside the pumping chamber, thus causing no pollution to the vacuum environment.
6. Unlike the Roots blower, the Roots vacuum pump does not compress the air, which means there is no need to add a discharge valve.
7. Compact and simple in construction, the oil-free vacuum pump is impervious to dust and steam.

  • BHR Roots Pump Casing
  • BHR Roots Pump Wall Mount

Roots Vacuum Pump Specs
Vacuum degree: -13.33~-40kPa
Flow rate: 0.77~110 m³/min
Shaft power: 0.36~117.6kw
Diameter: DN50-DN300

Technical Parameters

BHR50V
Model BHR50V Product series BHR Product type Tri-lobe Roots blower
Vacuum degree -40kpa (-300mmHg) Motor power 0.75~3kw Diameter 40mm (air intake) 50mm (air outlet)
Flow rate (NTP,WET) 0.77~ 2.04m³ /min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 0.36~2.34kw Voltage 380V,400V,415V Drive method Belt or coupling
Cooling mode Air cooling Weight (not including motor) 72kg (direct drive) , 70kg (belt drive) Acoustic shield Optional
BHR65V
Model BHR65V Product series BHR Product type Tri-lobe Roots blower
Vacuum degree -40kpa (-300mmHg) Motor power 1.1~4kw Diameter 50mm (air intake) 65mm (air outlet)
Flow rate (NTP,WET) 1.04~ 3 m³/min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 0.75~3.23kw Voltage 380V,400V,415V Drive method Belt or coupling
Cooling mode Air cooling Weight (not including motor) 84kg (direct drive) 81kg (belt drive) Acoustic shield Optional
BHR80V
Model BHR80V Product series BHR Product type Tri-lobe Roots blower
Vacuum degree -40kpa (-300mmHg) Motor power 2.2~5.5kw Diameter 65mm (air intake) 80mm (air outlet)
Flow rate (NTP,WET) 2.25~ 4.71m³ /min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 1.01~5.09kw Voltage 380V,400V,415V Drive method Belt or coupling
Cooling mode Air cooling Weight (not including motor) 132kg (direct drive) 123kg (belt drive) Acoustic shield Optional
BHR100V
Model BHR100V Product series BHR Product type Tri-lobe Roots blower
Vacuum degree -40kpa (-300mm Hg) Motor power 3~11kw Diameter 80mm (air intake) 100mm (air outlet)
Flow rate (NTP,WET) 3.21~ 7.62m³ /min Frequency 50HZ, 60HZ Dimensions PDF
Shaft power 1.56~7.74kw Voltage 380V, 400V, 415V Drive method Belt or coupling
Cooling mode Air cooling Weight (not including motor) 168kg (direct drive) 157kg (belt drive) Acoustic shield Optional
BHR125V
Model BHR125V Product series BHR Product type Tri-lobe Roots blower
Vacuum degree -40kpa (-300mm Hg) Motor power 5.5~15kw Diameter 100mm (air intake) 125mm (air outlet)
Flow rate (NTP,WET) 4.63~10.62m³ /min Frequency 50HZ, 60HZ Dimensions PDF
Shaft power 2.27~11.8kw Voltage 380V, 400V, 415V Drive method Belt or coupling
Cooling mode Air cooling Weight (not including motor) 245kg (direct drive) 235kg (belt drive) Acoustic shield Optional
BHR150V
Model BHR150V Product series BHR Product type Tri-lobe Roots blower
Vacuum degree -40kpa (-300mm Hg) Motor power 7.5~30kw Diameter 125mm (air intake) 150mm (air outlet)
Flow rate (NTP,WET) 9.9~ 23.85m³ /min Frequency 50HZ, 60HZ Dimensions PDF
Shaft power 3.51~26.6kw Voltage 380V, 400V, 415V Drive method Belt or coupling
Cooling mode Air cooling Weight (not including motor) 408kg (direct drive) 394kg (belt drive) Acoustic shield Optional
BHR175V
Model BHR175V Product series BHR Product type Tri-lobe Roots blower
Vacuum degree -40kpa (-300mm Hg) Motor power 15~45kw Diameter 150mm (air intake) 200mm (air outlet)
Flow rate (NTP,WET) 16.2~ 33.7m³ /min Frequency 50HZ, 60HZ Dimensions PDF
Shaft power 8.52~37.5kw Voltage 380V, 400V, 415V Drive method Belt or coupling
Cooling mode Air cooling Weight (not including motor) 420kg (direct drive) 435kg (belt drive) Acoustic shield Optional
BHR200V
Model BHR200V Product series BHR Product type Tri-lobe Roots blower
Vacuum degree -40kpa (-300mmHg) Motor power 18.5~75kw Diameter 175mm (air intake) 200mm (air outlet)
Flow rate (NTP,WET) 24.4~ 48.7m³ /min Frequency 50HZ, 60HZ Dimensions PDF
Shaft power 10.38~55kw Voltage 380V, 400V, 415V Drive method Belt or coupling
Cooling mode Air cooling Weight (not including motor) 900kg (direct drive) 860kg (belt drive) Acoustic shield Optional
BHR225V
Model BHR225V Product series BHR Product type Tri-lobe Roots blower
Vacuum degree -33kpa(-250mm Hg) Motor power 30~75kw Diameter 200mm (air intake) 250mm (air outlet)
Flow rate (NTP,WET) 37.26~ 61.6m³ /min Frequency 50HZ, 60HZ Dimensions PDF
Shaft power 20.15~55.53kw Voltage 380V, 400V, 415V Drive method Belt or coupling
Cooling mode Air cooling Weight (not including motor) 1430kg (direct drive) 1220kg (belt drive) Acoustic shield Optional
BHR250V
Model BHR250V Product series BHR Product type Tri-lobe Roots blower
Vacuum degree -40kpa (-300mm Hg) Motor power 30~90kw Diameter 250mm (air intake) 250mm (air outlet)
Flow rate (NTP,WET) 42.7~ 78.6 m³ /min Frequency 50HZ, 60HZ Dimensions PDF
Shaft power 25.5~86.94kw Voltage 380V, 400V, 415V Drive method Belt or coupling
Cooling mode Air cooling Weight (not including motor) 1708kg (direct drive) 1653kg (belt drive) Acoustic shield Optional
BHR300V
Model BHR300V Product series BHR Product type Tri-lobe Roots blower
Vacuum degree -40kpa (-300mm Hg) Motor power 45~132kw Diameter 300mm (air intake) 300mm (air outlet)
Flow rate (NTP,WET) 59.5~ 110 m³ /min Frequency 50HZ, 60HZ Dimensions PDF
Shaft power 35.84~117.6kw Voltage 380V, 400V, 415V Drive method Belt or coupling
Cooling mode Air cooling Weight (not including motor) 2198kg (direct drive) 2132kg (belt drive) Acoustic shield Optional

Both belt drive and direct drive are available.
Speak to one of our engineers who truly care about your satisfaction when it comes to the air-cooled Roots blower. Based on your specific requirements, we can select the right lobe blower and provide a reasonable price quote.

Please send to us the following information:
1. Pump capacity(m3/min)
2. Pressure (KPa)
3. Motor power (kw)
4. Specific application environments

In case you have any questions, let us know.
We're sincerely looking forward to a fruitful partnership with you.