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Root's Blower - Manual

 

Blower Model Order Code


MODEL CR–350
CR Cutes Root's Blower (For PRESSURE)
VCR Cutes Root's Blower (For VACUUM)
Connection Pipe Size 14 Inch (350 mm)
Capacity 95 ~ 257 m3/min (Refer To Performance Table)
Pressure 1000 ~ 10000 mmAq
Vacuum -1000 ~ -6000 mmAq
Speed RPM 600 ~ 1200 RPM
Transmission V-BELT
Noise Level 87 ~ 99 dB (Refer To Noise Level of Blower)
Motor Power 75 ~ 500 HP (Refer to Performance Curve)
Weight 873.6 KG (Blower Only, Refer To Weight List)
Structure Refer To Structure & Material List
Material

“W” type: Blower with water cooling for pressure 8000 ~ 10000 mmAq & vacuum -5000 ~ -6000 mmAq
 
 

Usage Of Performance Table


The performance table shows relationships among blower model No., bore, RPM, discharge pressure, actual air volume and shaft power.

1. The air volume shown in the performance table represents a suction volume under standard suction condition (temp. 20℃, absolute pressure 1.0332 kg/cm2, relative humidity 65%)


2. Incase an air flow under the normal condition (0℃/1.0332 kg/cm2 abs) is equivalent to an suction pressure, it can be converted to an air flow under the standard condition by means of the following formula:


Qs = Qn × 1.0732
Qs: air flow under standard condition (indicated in the performance table) m3/min
Qn: air flow under normal condition m3/min


3. An air flow under the discharge condition can be converted to an air flow under standard condition (indicated in the performance table):


Qs  =  Qd   ×
  1.0332 + Pd  
×
  273 + ts  
   
1.0332
273 + td
   
          
Qd: air flow under discharge condition m3/min       ts: suction temperature ℃
Pd: discharge pressure kg/cm2 (mmAq/10000)   td: discharge temperature ℃


 
 
 
 
 
4. Seek blower model No., bore, RPM and shaft power of the performance table based on the air flow and required discharge pressure obtained as a result of the aforementioned results.


5. As the selection covers two models, select the smaller for economic, but select the bigger with the advantage of lower RPM.


6. The performance table shows color-distinguished electric motor outputs. Use the electric motors of those outputs.


   
 

Structure & Material List




NO. NAME MATERIAL
(JIS / AISI.ASTM)
NO. NAME MATERIAL
(JIS / AISI.ASTM)
1. Gear Case FC25 / A48-40 B 11. Seal Case FC25 / A48-40 B
2. Oil Splash SS41 / * 12. Pulley FC25 / A48-40 B
3. Oil Plug S45C / 1045 13. Nut SS41 / *
4. Bearing SUJ2 / 52100 14. Seal NBR (Nitrile Butadiene Rubber)
5. Bearing Case FC25 / A48-40 B 15. Nut SS41 / *
6. Labyrinth Seal SS41 / * 16. Shaft SCM440 / 4140
7. Eye Bolt S45C / 1045 17. Main Casing FC25 / A48-40 B
8. Rotor (Lobe) FC25 / A48-40 B 18. Spur Gear SNCM21 / 8620
9. Side Cover FC25 / A48-40 B 19. Oil Drain S45C / 1045
10. Oil Case FC25 / A48-40 B 20. Oil Gauge S45C / 1045

 

 

 

 

 

 

 

 

 

 

*SS41 = Steel Structural, tensile Strength 41 kg/cm2

 

Weight List


    CR-40 CR-50 CR-65 CR-80 CR-100 CR-125 CR-150 CR-200 CR-250 CR-300 CR-350
01 Blower
24.2
77.2
90.2
168.2
191.6
353.2
403.0
693.4
873.6
2010.0
3850.0
02 Base
10.0
14.4
14.4
18.0
18.0
32.6
32.6
62.2
66.2
80.0
 
03 Safety Cover
2.4
2.8
2.8
5.4
5.4
9.8
9.8
12.8
12.8
37.0
 
04 Inlet Silencer
0.6
12.0
13.4
20.6
21.8
42.4
43.2
122
218.6
300.0
 
05 T Joint
1.0
6.4
7.2
8.2
10.0
15.6
19.0
18.4
29.8
35.0
 
06 Safety Valve
2.2
2.2
2.2
2.2
2.2
3.8
3.8
3.8
3.8
35.0
 
07 Pressure Gage
0.4
0.5
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
 
08 Check Valve
0.8
0.8
1.4
1.4
2.0
3.2
4.6
7.6
28.0
40.0
 
09 Outlet Silencer
 
13.4
14.8
22.8
23.0
41.8
44.0
117.6
221.6
300.0
250.0
10 Expansion Joint
 
3.6
4.8
4.8
6.2
9.0
10.6
15.0
25.0
40.0
 
  Total
41.6
138.0
158.4
252.0
280.6
512.0
571.0
1053.2
1484.8
2877.4
 
11 Filter Tank
 
25.0
28.0
36.0
40.0
57.2
62.0
108.2
 
 
 
12 90 Degree Elbow 
 
3.4
 
5.0
 
13.4
 
24.8
 
 
 

(Units: KG)
 

Features


Three Lobes Reduce Vibration And Noise


Cutes three lobes blower are new series roots type blower. By CNC machine, we made precise rotor's promote performance, lower noise and vibration.

. Wide range for air volume pressure and vacuum.

1. Bore : 25A ~ 350A (1” ~ 14”)


2. Capacity : 0.1 ~ 250 m3/min


3. Pressure : 0 ~ 10000 mmAq


4. Vacuum : -6000


. Stable air flow and less pressure variation.

. Clean air without oil moist.

. Construction simple and easy maintenance.

. Bearings are all lubricated by oil moist to longer life.


 

Why You Select Cutes New Three Lobes Root's Blower


Conventional blowers result pressure pluses and vibrations rob power and shorten the life of every bearing, gear and other drive train components.

1. LOWER NOISE

Pressure pulses are the major noise source of blower.

Three lobe's design can efficiently reduce noise by approximately 5 dB.


2. LONGER BEARING LIFE

Less vibration transmitted through the lobe results approximately 20% longer bearing life.


3. LOWER ENERGY CONSUMPTION

Three lobe's deisg control backflow pressure to rotor, so reduce energy consumption.



 

 
 

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TEL : 886-3-4612333 (Overseas Dept), 886-3-4526161
FAX : 886-3-4526227 (Overseas Dept), 886-3-4511347
E-mail : sales@cutes.com.tw