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Tri-Lobe Roots Blower

, BHR Series

The BHR series tri-lobe Roots blower combines into one unit a variety of desirable features commonly found in competitive rotary lobe blower products. The in-house developed rotary lobe blower runs very quietly, thus causing little noise pollution to the surrounding environment. Leak-free and available in a total of 11 models, the BHR series Roots blower provides a finely graded selection of air volumes, and is able to bring pressure up fast.

Features of Tri-Lobe Roots Blower
1. Spiral air baffles wind their way through the air inlet and outlet. Sealed pockets, triangular in shape, are formed between lobes' outer edges and the casing. As rotors revolve, those sealed cells gradually open their way into the inlet or discharge end, allowing air or gas to pump in or out. Because sealed pockets are opened progressively rather than abruptly, they allow air or gas to stream in or out in a continuous manner without generating pulsating flows (also known as pulses).
2. Each rotor has three lobes shaped like a clover leaf. Rotors rotate in opposite directions, allowing lobes to mesh without making physical contact with each other.
3. Top quality precision CNC machine tools are used to produce these rotors which are then put through the dynamic balance test to minimize unwanted vibration.
4. High-precision gears are durable and quiet running.
5. V-belts and bearings are purchased overseas to ensure quality.
6. All moving parts are properly lubricated and sealed off against the chamber to avoid air or gas contamination.
7. Shaft end is tightly sealed against leaking outside.
8. Compact design takes up little space. Optimized design and configuration allows easy maintenance.

  • Cylinder
  • DOOSAN Machining Center
  • Gearbox
  • Motor Head-plate
  • Rotor Machining
  • Pulley

BHR Series Specifications
Pressure: 10~80kPa
Flow rate: 0.4~135 m³/min
Shaft power: 0.3~209.9kW
Diameter: DN50-DN300

Technical Parameters
Standard accessories Main blower, filter, silencer, blower base, belt pulley, belt, guard, flexible connector, pressure and vacuum gauge, relief valve, check valve, anchor bolt, lubricant
Optional accessories Motor, starter, acoustic shield, unloading valve, damper, thermometric element, etc.

Technical Parameters

BHR50
Model BHR50 Product series BHR Product type Tri-lobe Roots blower
Pressure 78.4kpa (588mmHg) Motor power 0.55~5.5kw Diameter 40mm (air intake) 50mm (air outlet)
Flow rate (NTP,WET) 0.43~2.48 m³ /min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 0.3~4.52kw 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
BHR65
BHR65
Model BHR65 Product series BHR Product type Tri-lobe Roots blower
Pressure 78.4kpa (588mmHg) Motor power 0.55~7.5kw Diameter 50mm (air intake) 65mm (air outlet)
Flow rate (NTP,WET) 0.7~3.64 m³ /min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 0.38~5.96kw 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
BHR80
Model BHR80 Product series BHR Product type Tri-lobe Roots blower
Pressure 78.4kpa (588mmHg) Motor power 2.2~11kw Diameter 65mm (air intake) 80mm (air outlet)
Flow rate (NTP,WET) 2.04~5.43 m³ /min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 1.04~8.84kw 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
BHR100
Model BHR100 Product series BHR Product type Tri-lobe Roots blower
Pressure 78.4kpa (588mmHg) Motor power 2.2~18.5kw Diameter 80mm (air intake) 100mm (air outlet)
Flow rate (NTP,WET) 2.87~9.07 m³ /min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 1.35~15.65kw 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
BHR125
BHR125
Model BHR125 Product series BHR Product type Tri-lobe Roots blower
Pressure 78.4kpa (588mmHg) Motor power 2.2~30kw Diameter 100mm (air intake) 125mm (air outlet)
Flow rate (NTP,WET) 5.01~12.48 m³ /min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 1.65~22.03kw 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
BHR150
Model BHR150 Product series BHR Product type Tri-lobe Roots blower
Pressure 78.4kpa (588mmHg) Motor power 2.2~55kw Diameter 125mm (air intake) 150mm (air outlet)
Flow rate (NTP,WET) 9.84~27.05 m³ /min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 3.85~51.4kw 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
BHR175
Model BHR175 Product series BHR Product type Tri-lobe Roots blower
Pressure 58.8kpa(441mm Hg) Motor power 11~75kw Diameter 150mm (air intake) 200mm (air outlet)
Flow rate (NTP,WET) 19.65~40.5 m³ /min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 9.13~52.03kw 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
BHR200
BHR200
Model BHR200 Product series BHR Product type Tri-lobe Roots blower
Pressure 78.4kpa (588mm Hg) Motor power 11~110kw Diameter 175mm (air intake) 200mm (air outlet)
Flow rate (NTP,WET) 26.3~58.8 m³ /min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 11.26~102.4kw 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
BHR225
Model BHR225 Product series BHR Product type Tri-lobe Roots blower
Pressure 58.8kpa (441mmHg) Motor power 30~110kw Diameter 200mm (air intake) 250mm (air outlet)
Flow rate (NTP,WET) 49.6~76.3 m³ /min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 23.7~95kw 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
BHR250
Model BHR250 Product series BHR Product type Tri-lobe Roots blower
Pressure 78.4kpa (588mmHg) Motor power 37~185kw Diameter 250mm (air intake) 250mm (air outlet)
Flow rate (NTP,WET) 59.8~96.5 m³ /min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 28.8~154.3kw 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
BHR300
BHR300
Model BHR300 Product series BHR Product type Tri-lobe Roots blower
Pressure 78.4kpa (588mmHg) Motor power 37~225kw Diameter 300mm (air intake) 300mm (air outlet)
Flow rate (NTP,WET) 86.1~135.9 m³ /min Frequency 50HZ,60HZ Dimensions PDF
Shaft power 32~209.9kw 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

Note
This series of Roots blower offers two drive methods: direct drive and belt drive.
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.