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B-Tohin Machine (Jiangsu) Co., Ltd.
B-Tohin Machine (Jiangsu) Co., Ltd.

Professional Manufacturer of Various Kinds of Blowers

Home ProductsThree Lobe Roots Blower

Dn200 Water Cooled Three Lobe Roots Blower Maximum Pressure 100kpa

Dn200 Water Cooled Three Lobe Roots Blower Maximum Pressure 100kpa

  • Dn200 Water Cooled Three Lobe Roots Blower Maximum Pressure 100kpa
  • Dn200 Water Cooled Three Lobe Roots Blower Maximum Pressure 100kpa
Dn200 Water Cooled Three Lobe Roots Blower Maximum Pressure 100kpa
Product Details:
Place of Origin: CHINA
Brand Name: B-TOHIN
Certification: ISO9001 / ISO14001
Model Number: BKW9020S
Payment & Shipping Terms:
Minimum Order Quantity: 1 set
Price: USD 10600- USD16600
Packaging Details: EXPORT WOODEN CASE
Delivery Time: 50 WORK DAYS
Payment Terms: L/C, T/T
Supply Ability: 30 SETS PER MONTH
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Detailed Product Description
Name: BKW9020S Pressure: 60-100Kpa
Air Flow: 40.72m3/min-73.32m3/min Package: Wooden Case
Motor Power: 75kw-160kw Cooling Type: Water 15 L/min
High Light:

three lobe small roots blower


dn200 three lobe roots blower


100kpa three lobe roots blower


About BKW9020S
BKW9020S Roots Blower inherits most components from BK9020, it adopts water cooling in bearing cover, which can reduce the temperature of bearing when working and prolong the longevity, it's bore size is DN200, which can generate larger capacity suitable for cement factory and power plant use.


Model BKW9020S
Air capacity 40.72m3/min-73.32m3/min
Discharge differential pressure 60-100KPA
Rotary speed 1000rpm-1500rpm
Motor type 75KW-280KW
380/400/415/440V, 3PHASES, 50/60HZ
Motor brand Standard: Siemens Beide or Wannan motor
Siemens and ABB motor for your option
Installation type Standard: horizontal type.
Vertical type available for your option
N.W. of blower without motor 1310 kg
Packing size Approx. 2.62*1.78*2.60m (length*width*height)
Features 1. Helical type timing gears for smooth operation
2. Compact, flexibility in installation gives users more choices.
3. Integral structure of impeller and shaft for more stable and smooth operation
4. Adopt imported oil seals made from fluoric rubber with great wear resistance and high-temperature resistance.
5. Low noise, low vibration and energy consumption.


Model Port Dia (MM) Speed Inlet airflow (m3/min)and shaft power(KW)(m3/min)
0.6kgf/cm2 0.7kgf/cm2 0.8kgf/cm2 0.9kgf/cm2 1.0kgf/cm2 Cooling
6000mmH2O 7000mmH2O 8000mmH2O 9000mmH2O 10000mmH2O
0.06Mpa 0.07Mpa 0.08Mpa 0.09Mpa 0.1Mpa
rpm m3/min KW m3/min KW m3/min KW m3/min KW m3/min KW L/min
BKW9020S 200 (8") 1000 44.70 59.00 43.60 65.83 42.58 72.66 41.62 79.49 40.72 86.33 15
1050 47.61 61.95 46.52 69.12 45.50 76.29 44.54 83.47 43.64 90.64
1150 53.50 66.49 52.57 74.19 51.71 81.89 50.90 89.59 50.13 97.29
1250 59.17 72.27 58.24 80.64 57.37 89.01 56.56 97.38 55.79 105.75
1400 67.66 80.94 66.73 90.32 65.86 99.69 65.05 109.07 64.28 118.44
1500 73.32 86.72 72.39 96.77 71.52 106.81 70.71 116.86 69.94 126.90
1600 78.98 92.51 78.05 103.22 77.19 113.93 76.37 124.65 75.60 135.36


Description of blower parts:

Casing Made of Casting iron HT200
ENDLESS structure adopted for improving efficiency, one-time machined by CNC center with high precision
Rotor (Shaft and impeller) Made of Casting iron QT500
The impeller and shaft is cast as an integral part.
Adopting NC planer for machining to achieve high precision
Gear end bearing Made of GCr15
NSK brand, double-row angular contact ball bearing, capable of supporting axial load
Drive end bearing Made of GCr15
NSK brand, cylindrical roller bearing
Gear Made of 20CrMnTi
Bevel structure for more smoothly running
Oil seal Made of fluoro rubber
bears high temperature and has a longer life.

Working Principle

Roots blower is a cubage blower, and it discharges a fixed amount of air in proportion to its rotation speed. Every rotation, there is two lobes to finish three times absorbing and dischargeing air. Compared with two lobes blower, it is of less air pulses, smaller load change, higher strength, lower noise and vibration.

Two paraller shafts have three lobes each, all the lobes keep small clearance with each other and housing inside. Every lobes rotatiomn, a certain air will be absorbed at inlet and transfeered form the housing inside surface to blower's diacharge port.

Two shafts will be turned by the timing gears, no any touching between lobes, so it can be turned at high speed without any lubrication inside. It has the following chaaracteristics: simply configuration; running smoothly;good performance stabilization. It has been widely applied in various industries.


Cooling Water:


Clean water without foreign materials is required.

Water temperature shall be less than 40 ℃.


Contact Details
B-Tohin Machine (Jiangsu) Co., Ltd.

Contact Person: Joy Fan

Tel: 86-510-87076720

Send your inquiry directly to us
B-Tohin Machine (Jiangsu) Co., Ltd.
Yong'an Road, Industrial Park for Environmental Science & Technology, Yixing City, Jiasngsu Province 214205, China
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