Series M Roots Blower
Series M Roots Blower (also called Positive Displacement Blower - PD Blower, or Rotary Blower) with tri-lobe are heavy duty style new products which technology is from America. It is the replacement for Duroflow models of Gardner Denver, RAM/RCS mod
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Bore:
80-300 mm
Flow capacity:
4.4-107.7 m³/min
Pressure rise:
98Kpa
Vacuum:
-49kPa
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Product Information

The M Roots Blower is a heavy-duty positive displacement blower designed for continuous industrial air and gas conveying applications. Featuring a precision-engineered tri-lobe rotor, it delivers stable airflow, reliable performance, and efficient operation across a wide range of industrial processes. Suitable for wastewater treatment, petrochemical processing, cement manufacturing, power generation, metallurgy, and pneumatic conveying, the equipment is available in multiple configurations to meet different flow, pressure, and installation requirements.

Robust Mechanical Design

Heavy-Duty Construction

The equipment is manufactured with integral ductile iron rotors and shafts, providing high mechanical strength and improved structural rigidity. The one-piece housing and end plates help maintain accurate rotor alignment while reducing vibration during continuous operation. Large diameter shafts further enhance durability and operational stability under demanding working conditions.

Precision Gear Transmission

Hardened helical timing gears synchronize the rotors without direct contact, ensuring smooth operation while reducing mechanical wear. A taper-lock shaft mounting structure provides secure gear positioning and simplifies installation and maintenance.

Reliable Lubrication and Sealing

Dual Splash Lubrication

A dual splash lubrication system continuously supplies lubricant to both gears and bearings during operation. This design helps maintain stable lubrication, supports long component life, and contributes to reliable performance during extended operating periods.

Effective Sealing System

Multi-piston ring air seals separate the air chamber from the lubrication chamber, helping minimize the possibility of oil entering the airflow. Lip-type Viton oil seals and replaceable shaft sleeves further reduce lubricant leakage while protecting critical sealing surfaces from wear.

Low Noise and Stable Operation

Optimized Tri-Lobe Rotor

The precision-machined tri-lobe rotor profile helps reduce airflow pulsation, resulting in smoother airflow delivery and lower operating vibration. Combined with an optimized housing structure, the design contributes to relatively low noise levels during normal operation.

Flexible Installation

The housing supports both horizontal and vertical mounting configurations, allowing the equipment to adapt to different installation layouts. Optional accessories, including integrated silencers, automatic belt tensioners, and base frames, can be selected according to project requirements.

Performance Range

Operating Capacity

The equipment is designed to handle discharge pressures of up to 103 kPa, vacuum levels down to −51 kPa, and airflow capacities ranging from 4.4 to 102.8 m³/min. Multiple models are available, allowing users to select suitable specifications based on system pressure, flow demand, and operating conditions.

Typical Applications

Wastewater Treatment

The equipment is widely used for sewage aeration, sludge treatment, biogas conveying, and flue gas desulfurization aeration, providing stable airflow for biological treatment and environmental protection processes.

Industrial Gas Conveying

In the chemical and petrochemical industries, it can be applied to process gas transportation, reactor air supply, and gas circulation systems. Mechanical seals or dry gas seals can be selected for applications involving special gases.

Pneumatic Conveying and Industrial Air Supply

The equipment is suitable for conveying powders, granules, and other bulk materials in industries such as cement, metallurgy, power generation, food processing, and building materials. Stable airflow also supports combustion systems, oxidation processes, and other industrial air supply applications requiring continuous operation.

Model

Bore

RPM

                                                        Inlet Flow Qs(m³/min ),Shaft Power La(kW)and Motor Power Po (kW)

Motor

Pole

29.4kPa

39.2 kPa

49 kPa

58.8 kPa

68.6 kPa

78.4 kPa

88.2 kPa

98 kPa

Qs

La

Po

Qs

La

Po

Qs

La

Po

Qs

La

Po

Qs

La

Po

Qs

La

Po

Qs

La

Po

Qs

La

Po

4506

80

2000

5.4

3.4

4

5.2

4.5

5.5

5.1

5.7

7.5

4.9

6.8

11

4.8

7.9

11

4.7

9.1

11

4.5

10.2

15

4.4

11.3

15

4

2400

6.8

4.1

5.5

6.6

5.5

7.5

6.4

6.9

11

6.3

8.3

11

6.1

9.7

15

6.0

11.0

15

5.9

12.4

15

5.7

13.8

18.5

2

2800

8.1

4.9

7.5

7.9

6.5

7.5

7.7

8.2

11

7.6

9.8

15

7.5

11.5

15

7.3

13.1

18.5

7.2

14.7

18.5

7.1

16.4

22

2

3200

9.4

5.7

7.5

9.3

7.6

11

9.1

9.5

11

8.9

11.4

15

8.8

13.3

18.5

8.7

15.2

18.5

8.5

17.1

22

8.4

19.0

22

2

3600

10.8

6.6

11

10.6

8.7

11

10.4

10.9

15

10.3

13.1

18.5

10.1

15.3

18.5

10.0

17.5

22

9.9

19.7

30

9.8

21.9

30

2

4000

12.1

7.5

11

11.9

9.9

15

11.8

12.4

15

11.6

14.9

18.5

11.5

17.4

22

11.3

19.9

30

11.2

22.4

30

11.1

24.9

30

2

4509

100

2000

8.3

5.1

7.5

8.0

6.8

11

7.7

8.5

11

7.5

10.3

15

7.3

12.0

15

7.1

13.7

18.5

6.9

15.4

18.5

6.8

17.1

22

4

2400

10.3

6.2

7.5

10.0

8.3

11

9.7

10.4

15

9.5

12.5

15

9.3

14.6

18.5

9.1

16.6

22

8.9

18.7

22

8.8

20.8

30

2

2800

12.3

7.4

11

12.0

9.9

15

11.8

12.3

15

11.5

14.8

18.5

11.3

17.3

22

11.1

19.7

30

11.0

22.2

30

10.8

24.7

30

2

3200

14.3

8.6

11

14.0

11.5

15

13.8

14.4

18.5

13.5

17.2

22

13.3

20.1

30

13.1

23.0

30

13.0

25.8

37

12.8

28.7

37

2

3600

16.3

9.9

15

16.0

13.2

18.5

15.8

16.5

22

15.6

19.8

30

15.4

23.1

30

15.2

26.4

37

15.0

29.7

37

14.8

33.0

45

2

4000

18.3

11.2

15

18.0

15.0

18.5

17.8

18.7

22

17.6

22.5

30

17.4

26.2

37

17.2

30.0

37

17.0

33.7

45

16.8

37.5

45

2

4512

150

2000

11.1

6.8

11

10.7

9.1

11

10.4

11.4

15

10.1

13.7

18.5

9.8

15.9

22

9.6

18.2

22

9.3

20.5

30

9.1

22.8

30

4

2400

13.7

8.3

11

13.4

11.1

15

13.1

13.9

18.5

12.8

16.6

22

12.5

19.4

30

12.3

22.2

30

12.0

24.9

30

11.8

27.7

37

2

2800

16.4

9.9

15

16.1

13.1

18.5

15.7

16.4

22

15.5

19.7

30

15.2

23.0

30

14.9

26.3

37

14.7

29.6

37

14.5

32.9

45

2

3200

19.1

11.5

15

18.7

15.3

18.5

18.4

19.1

30

18.1

22.9

30

17.9

26.8

37

17.6

30.6

37

17.4

34.4

45

17.2

38.2

45

2

3600

21.8

13.2

18.5

21.4

17.6

22

21.1

22.0

30

20.8

26.3

37

20.5

30.7

37

20.3

35.1

45

20.1

39.5

55

19.8

43.9

55

2

4000

24.5

15.0

18.5

24.1

20.0

30

23.8

24.9

30

23.5

29.9

37

23.2

34.9

45

23.0

39.9

55

22.8

44.9

55

22.5

49.9

75

2

6010

125

1500

12.2

8.4

11

11.6

11.2

15

11.1

14.0

18.5

10.7

16.8

22

10.2

19.6

30

9.8

22.4

30

9.5

25.2

30

9.1

28.0

37

4

1900

16.4

11.0

15

15.9

14.7

18.5

15.4

18.4

22

14.9

22.1

30

14.5

25.8

30

14.1

29.5

37

13.7

33.1

45

13.4

36.8

45

4

2300

20.7

14.0

18.5

20.1

18.7

22

19.6

23.3

30

19.1

28.0

37

18.7

32.7

45

18.3

37.3

45

18.0

42.0

55

17.6

46.6

55

2

2700

24.9

17.3

22

24.4

23.1

30

23.8

28.8

37

23.4

34.6

45

23.0

40.4

55

22.6

46.1

55

22.2

51.9

75

21.9

57.7

75

2

3000

28.1

20.0

30

27.5

26.7

37

27.0

33.4

45

26.6

40.1

55

26.1

46.8

55

25.8

53.5

75

25.4

60.1

75

25.0

66.8

90

2

6016

150

1500

18.9

12.8

15

18.1

17.0

22

17.3

21.3

30

16.7

25.5

30

16.1

29.8

37

15.5

34.0

45

15.0

38.3

45

14.5

42.6

55

4

1900

25.4

16.8

22

24.5

22.4

30

23.8

28.0

37

23.2

33.6

45

22.5

39.2

55

22.0

44.8

55

21.5

50.4

75

21.0

56.0

75

4

2300

31.8

21.3

30

31.0

28.4

37

30.3

35.4

45

29.6

42.5

55

29.0

49.6

75

28.4

56.7

75

27.9

63.8

75

27.4

70.9

90

2

2700

38.3

26.3

37

37.5

35.0

45

36.7

43.8

55

36.1

52.5

75

35.5

61.3

75

34.9

70.0

90

34.4

78.8

110

33.9

87.6

110

2

3000

43.1

30.4

37

42.3

40.6

55

41.6

50.7

75

40.9

60.8

75

40.3

71.0

90

39.8

81.1

110

39.2

91.3

110

38.7

101.4

132

2

8021

200

1000

27

18.6

22

25.6

24.9

30

24.4

31.1

37

23.3

37.3

45

22.3

43.5

55

21.4

49.7

75

20.5

55.9

75

19.7

62.1

75

4

1300

37.8

25.1

30

36.4

33.4

45

35.2

41.8

55

34.1

50.2

75

33.1

58.5

75

32.2

66.9

90

31.3

75.2

90

30.4

83.6

110

4

1600

48.6

32.2

45

47.2

42.9

55

46.0

53.6

75

44.9

64.4

90

43.9

75.1

90

42.9

85.8

110

42.0

96.5

132

41.2

107.3

132

4

1900

59.3

40.1

55

58.0

53.4

75

56.7

66.8

90

55.7

80.2

110

54.6

93.5

110

53.7

106.9

132

52.8

120.2

160

52.0

133.6

160

4

2000

62.9

42.9

55

61.6

57.2

75

60.3

71.5

90

59.2

85.8

110

58.2

100.2

132

57.3

114.5

160

56.4

128.8

160

55.6

143.1

185

4

8026

250

1000

33.9

23.0

30

32.3

30.6

37

30.8

38.3

45

29.5

45.9

55

28.3

53.6

75

27.2

61.3

75

26.2

68.9

90

25.2

76.6

90

4

1300

47.2

30.8

37

45.6

41.1

55

44.2

51.4

75

42.9

61.6

75

41.7

71.9

90

40.6

82.2

110

39.5

92.4

110

38.5

102.7

132

4

1600

60.6

39.4

55

58.9

52.5

75

57.5

65.7

90

56.2

78.8

110

55.0

91.9

110

53.9

105.1

132

52.9

118.2

160

51.9

131.3

160

4

1900

73.9

48.9

75

72.3

65.2

90

70.8

81.5

110

69.5

97.8

132

68.3

114.1

160

67.2

130.4

160

66.2

146.7

185

65.2

163.0

200

4

2000

78.4

52.3

75

76.7

69.7

90

75.3

87.2

110

74.0

104.6

132

72.8

122.0

160

71.7

139.4

185

70.6

156.9

185

69.6

174.3

200

4

8032

300

1000

42.3

28.1

37

40.4

37.5

45

38.7

46.9

55

37.1

56.3

75

35.7

65.7

90

34.4

75.0

90







4

1300

58.7

37.6

45

56.8

50.2

75

55.1

62.7

75

53.5

75.3

90

52.1

87.8

110

50.8

100.4

132







4

1600

75.1

48.0

75

73.2

63.9

75

71.5

79.9

110

70.0

95.9

132

68.5

111.9

132

67.2

127.9

160







4

1900

91.5

59.3

75

89.6

79.1

110

87.9

98.8

132

86.4

118.6

160

85.0

138.4

185

83.6

158.1

185







4

2000

97.0

63.3

75

95.1

84.4

110

93.4

105.6

132

91.8

126.7

160

90.4

147.8

185

89.1

168.9

200







4

Model

Bore

RPM

Inlet Flow Qs(m³/min ),Shaft Power La(kW)and Motor Power Po (kW)

Motor

Pole

-9.8 kPa

-19.6 kPa

-29.4 kPa

-39.2 kPa

-49 kPa

Qs

La

Po

Qs

La

Po

Qs

La

Po

Qs

La

Po

Qs

La

Po

4506

80

2000

5.9

1.1

1.5

5.6

2.3

3

5.2

3.4

4

4.8

4.5

5.5

4.4

5.7

7.5

4

2400

7.3

1.4

2.2

6.9

2.8

4

6.5

4.1

5.5

6.2

5.5

7.5

5.8

6.9

11

2

2800

8.6

1.6

2.2

8.2

3.3

4

7.9

4.9

7.5

7.5

6.5

7.5

7.1

8.2

11

2

3200

9.9

1.9

3

9.6

3.8

5.5

9.2

5.7

7.5

8.9

7.6

11

8.5

9.5

11

2

3600

11.3

2.2

3

10.9

4.4

5.5

10.5

6.6

11

10.2

8.7

11

9.8

10.9

15

2

4000

12.6

2.5

3

12.2

5.0

7.5

11.9

7.5

11

11.5

9.9

15

11.1

12.4

15

2

4509

100

2000

9.0

1.7

2.2

8.4

3.4

4

7.9

5.1

7.5

7.4

6.8

11

6.8

8.5

11

4

2400

11.0

2.1

3

10.4

4.2

5.5

9.9

6.2

7.5

9.4

8.3

11

8.8

10.4

15

2

2800

13.0

2.5

3

12.5

4.9

7.5

11.9

7.4

11

11.4

9.9

15

10.8

12.3

15

2

3200

15.0

2.9

4

14.5

5.7

7.5

14.0

8.6

11

13.4

11.5

15

12.9

14.4

18.5

2

3600

17.0

3.3

4

16.5

6.6

11

16.0

9.9

15

15.5

13.2

18.5

14.9

16.5

22

2

4000

19.0

3.7

5.5

18.5

7.5

11

18.0

11.2

15

17.5

15.0

18.5

16.9

18.7

22

2

4512

150

2000

12.0

2.3

3

11.3

4.6

5.5

10.6

6.8

11

9.9

9.1

11

9.2

11.4

15

4

2400

14.7

2.8

4

14.0

5.5

7.5

13.3

8.3

11

12.6

11.1

15

11.9

13.9

18.5

2

2800

17.3

3.3

4

16.6

6.6

7.5

16.0

9.9

15

15.3

13.1

18.5

14.6

16.4

22

2

3200

20.0

3.8

5.5

19.3

7.6

11

18.7

11.5

15

18.0

15.3

18.5

17.2

19.1

22

2

3600

22.7

4.4

5.5

22.0

8.8

11

21.4

13.2

18.5

20.7

17.6

22

19.9

22.0

30

2

4000

25.4

5.0

7.5

24.7

10.0

15

24.0

15.0

18.5

23.4

20.0

30

22.6

24.9

30

2

6010

125

1500

13.7

2.8

4

12.5

5.6

7.5

11.5

8.4

11

10.4

11.2

15

9.2

14.0

18.5

4

1900

17.9

3.7

5.5

16.8

7.4

11

15.7

11.0

15

14.7

14.7

18.5

13.5

18.4

22

4

2300

22.1

4.7

5.5

21.0

9.3

11

20.0

14.0

18.5

18.9

18.7

22

17.7

23.3

30

2

2700

26.4

5.8

7.5

25.3

11.5

15

24.2

17.3

22

23.2

23.1

30

22.0

28.8

37

2

3000

29.6

6.7

11

28.5

13.4

18.5

27.4

20.0

30

26.3

26.7

37

25.1

33.4

45

2

6016

150

1500

21.0

4.3

5.5

19.4

8.5

11

17.9

12.8

15

16.4

17.0

22

14.7

21.3

30

4

1900

27.5

5.6

7.5

25.8

11.2

15

24.4

16.8

22

22.8

22.4

30

21.1

28.0

37

4

2300

33.9

7.1

11

32.3

14.2

18.5

30.8

21.3

30

29.3

28.3

37

27.6

35.4

45

2

2700

40.4

8.8

11

38.8

17.5

22

37.3

26.3

37

35.8

35.0

45

34.0

43.8

55

2

3000

45.2

10.1

15

43.6

20.3

30

42.1

30.4

37

40.6

40.6

55

38.9

50.7

75

2

8021

200

1000

30.5

6.2

7.5

27.8

12.4

18.5

25.4

18.6

30

22.8

24.9

37

19.9

31.1

45

4

1300

41.3

8.4

11

38.6

16.7

22

36.1

25.1

37

33.6

33.4

45

30.7

41.8

55

4

1600

52.1

10.7

15

49.4

21.4

30

46.9

32.2

45

44.3

42.9

55

41.5

53.6

75

4

1900

62.8

13.4

18.5

60.1

26.7

37

57.7

40.1

55

55.1

53.4

75

52.3

66.8

90

4

2000

66.4

14.3

18.5

63.7

28.6

37

61.3

42.9

55

58.7

57.2

75

55.8

71.5

90

4

8026

250

1000

38.0

7.7

11

34.9

15.3

18.5

31.9

23.0

30

28.9

30.6

37

25.5

38.3

45

4

1300

51.4

10.3

15

48.2

20.5

30

45.3

30.8

37

42.2

41.1

55

38.8

51.4

75

4

1600

64.7

13.1

18.5

61.5

26.3

37

58.6

39.4

55

55.6

52.5

75

52.2

65.7

90

4

1900

78.1

16.3

22

74.9

32.6

45

71.9

48.9

75

68.9

65.2

90

65.5

81.5

110

4

2000

82.5

17.4

22

79.3

34.9

45

76.4

52.3

75

73.4

69.7

90

70.0

87.1

110

4

8032

300

1000

47.2

9.4

11

43.4

18.8

22

40.0

28.1

37

36.4

37.5

45

32.4

46.9

55

4

1300

63.6

12.5

15

59.8

25.1

30

56.4

37.6

45

52.8

50.2

75

48.8

62.7

75

4

1600

80.0

16.0

22

76.2

32.0

37

72.8

48.0

75

69.2

63.9

75

65.2

79.9

110

4

1900

96.4

19.8

30

92.6

39.5

55

89.2

59.3

75

85.6

79.1

110

81.6

98.8

132

4

2000

101.9

21.1

30

98.1

42.2

55

94.7

63.3

75

91.1

84.4

110

87.1

105.5

132

4


Specification
Application

Do not allow empty
Do not allow empty
Do not allow empty
Do not allow empty
Do not allow empty
Do not allow empty
Do not allow empty
Verification Code:
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