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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

Economical Roots Type Blower

Economical Roots Type Blower

  • Economical Roots Type Blower
  • Economical Roots Type Blower
  • Economical Roots Type Blower
Economical Roots Type Blower
Product Details:
Place of Origin: China
Certification: ISO9001/ ISO14001
Model Number: BC5003
Payment & Shipping Terms:
Minimum Order Quantity: 1 set
Price: USD 1250-USD 1520
Packaging Details: wooden case
Delivery Time: 25 work days
Payment Terms: L/C, T/T
Supply Ability: 200 SETS PER MONTH
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Detailed Product Description
Brand Name: BC Name: BC5003
Type: Root Blower Power Source: Electric Blower
Rated Voltage: Voltage Is Optional Other Name: Three Lobes Roots Blower
Material: Cast Iron Casing Discharge Bore Size: 65(2.5")
Application: Air Blower Pressure: 10-80Kpa
Rated Power: 50/60 HZ Usage: Aeration
Rotary Speed: 850-2000rpm Warranty: 12 Months
Name: Three Lobe Roots Blower Air Volume: 1.01m3/min
Pressure: 0.01Mpa Motor Power: 1.5KW
Outlet Size: DN40(1.5") Blower RPM: 1500
Shaft Power: 0.85KW Voltage: 380V/400/440V/According To Customer Requirements
Frequency: 50HZ/60HZ Application: Waste Water Treatment
Installation Type:: Horizontal Or Vertical
High Light:

lobe three roots type air blower


lobe three roots type blower


2.5inch roots type blower


About BC Three Lobes Roots Blower
BC series roots blower, with the intergral structure of impeller and shaft, has a waide application in environmental protection, electric power, architecture, gas supply and etc.

Main Chrarcteristics:
1) Working smoothly as helical timing gears is adopted.
2) It is flexible mounting ways because of the same structure in inlet and outlet.
3) It adopts more reasonable bearing structure, which can incresase the bearing operation life.
4) It is low noise, vibration and energy consumption.


Model BC5003
Air capacity 1.72m3/Min-7.15m3/Min
Discharge differential pressure 10-80KPA
Rotary speed 850rpm-2000rpm
Motor type 1.5KW-15KW
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 180 kg
Packing size Approx. 1.65*0.75*1.60m (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 avoiding shortcomings of the split structure blower
4. Adopt imported oil seals made from fluoric rubber with better wear resistance and high-temperature resistance.
5. Low noise, low vibration and energy consumption.


Type Port Dia Speed Inlet airflow(m3/min)and shaft power(KW)at different conditions
10kpa 20kpa 30kpa 40kpa 50kpa 60kpa 70kpa 80kpa
rpm m3/min KW m3/min KW m3/min KW m3/min KW m3/min KW m3/min KW m3/min KW m3/min KW
BC5003 65(2.5'') 850 2.67 0.95 2.39 1.58 2.19 2.40 2.01 2.72 1.86 3.31 1.72 3.90        
1000 3.25 1.12 2.98 1.85 2.77 2.83 2.60 3.20 2.44 3.89 2.31 4.59        
1150 3.84 1.29 3.56 2.13 3.36 3.25 3.18 3.68 3.03 4.48 2.89 5.28 2.76 6.27    
1250 4.23 1.40 3.95 2.32 3.75 3.53 3.57 4.00 3.42 4.87 3.28 5.74 3.15 6.81    
1350 4.62 1.52 4.34 2.50 4.14 3.82 3.96 4.32 3.81 5.25 3.67 6.19 3.54 7.36 3.43 8.30
1500 5.20 1.69 4.93 2.78 4.72 4.24 4.55 4.80 4.39 5.84 4.29 6.88 4.13 8.17 4.01 9.22
1600 5.59 1.80 5.32 2.97 5.11 4.52 4.94 5.11 4.78 6.23 4.65 7.34 4.52 8.72 4.40 9.85
1750 6.18 1.97 5.91 3.24 5.70 4.95 5.52 5.59 5.37 6.81 5.23 8.03 5.10 9.54 4.99 10.47
1850 6.57 2.08 6.30 3.43 6.09 5.23 5.91 5.91 5.76 7.20 5.62 8.49 5.50 10.08 5.38 11.38
2000 7.15 2.25 6.88 3.71 6.67 5.65 6.50 6.39 6.35 7.78 6.21 9.18 6.08 10.90 5.96 12.26



1. Helical type timing gears for smooth operation
2. Compact, flexibility in installation gives users more choices.
3. Integral structure of impeller superior to split structure, more stable in power transmission
4. Adopt imported oil seals made from fluoro rubber, which is of great wear resistance and high-temperature resistance.
5. Small vibration and economical energy consumption.


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.


Economical Roots Type Blower 0

Economical Roots Type Blower 1


Standard supply of scope
1. bare shaft blower
2. pressure relieve valve
3. wafer check valve (slim type)
4. inlet silencer(with air filter)
5. outlet silencer
6. public base (with belt cover)
7. rubber flexible joint and shock pad
8. motor pulley
9. pressure meter
10. V-belt
11. bolts and nuts and other connection parts
12. electric motor




Q1. What is your terms of packing?

A: Generally, we pack our goods in fumigation-free wooden case. if you have lagally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.


Q2. What is your terms of payment?

A: T/T 30% as deposit, and 70% before delivery. we'll show you the photos of the products and packages before you payment the balance.


Q3. What is your terms of delivery?



Q4. How about your delivery time?

A: Generally, it takes 7 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.


Q5. Can you produce according to the samples?

A: Yes, we can produce by your samples or technical drawings.


Q6. Do you test all your goods before delivery?

A: Yes, we have 100% test before delivery.




Economical Roots Type Blower 2



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

Contact Person: Iris Xu

Tel: +8615301523076

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B-Tohin Machine (Jiangsu) Co., Ltd.
No.69 Xijiu Road, Industrial Park for Environmental SCI & TECH, Yixing, Jiangsu,China
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