Elt-125s China in Yazd Iran (Islamic Republic of) fenner grid coupling price High in Villahermosa Mexico elecon fluid coupling manufacturer Efficiency Low Engergy Roots Vacuum Pump with top quality lowest price

Elt-125s  China  in   Yazd Iran (Islamic Republic of)   fenner grid coupling  price  High  in   Villahermosa Mexico   elecon fluid coupling  manufacturer  Efficiency Low Engergy Roots Vacuum Pump with top quality lowest price

We – EPG Group the biggest couplings and gears factory in China with 5 different branches. For more details: Mobile/whatsapp/telegram/Kakao us at: 0086-13083988828
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We make all kinds of roots blower, centrifugal blower, Our Main products are as below:

Type Diameter Rate of flow Pressure
ESR-MJ(Intensive Type) Φ50~Φ300mm 0.5~140m³/min 9.8KPa~98.8Kpa
ESR(Ordinary Type) Φ50~Φ350mm 0.5~140m³/min 9.8KPa~78.4Kpa
ESR-H(High-pressure Type) Φ50~Φ350mm 0.7~160m³/min 58.8KPa~98.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm 0.5~160m³/min 9.8KPa~53.3Kpa
EL Series Φ200~Φ600mm 20.3~750m³/min 9.8KPa~58.8Kpa
Multistage Centrifugal Blower
or C-Series
Φ250~Φ500mm 50~500m³/min 9.8KPa~98Kpa
ERR-ERG Type Φ250~Φ500mm 120~420m³/min 9.8KPa~98.8Kpa

The working principle of the three-blade roots blower: two three-lobed rotors are arranged in the cavity, and the
suction port and the discharge port are opened on both sides of the cavity. Through the action of a pair of
synchronous gears, the two rotors rotate in opposite directions and Relying on the mutual engagement of the two
rotors, the suction port and the discharge port are isolated, and the gas in the chamber is pushed to achieve the
purpose of blowing.

Feature of our roots blower:
1. Large adjustment of the air volume
2. Low Noise
3. High efficiency
4. Low energy cosumption
5. Long time life
6. Reliable running, easy maintenance,small footprint

The parameters of our roots blower:

Type Ratary Speed
(r/min)
Pressure Rise
(Kpa)
Capacity
(m/min)
Shaft Power
(Kw)
Motor Unit Maximn
Weight(Kg)
Power
(Kw)
ESR-50 1100-2120 9.8-58.8 0.65-2.58 0.3-3.54 0.75-4 128-158
ESR-65 1100-2130 9.8-58.8 0.94-3.66 0.38-4.46 0.75-5.5 155-185
ESR-80 1140-1900 9.8-58.8 2.34-5.43 1.04-7.42 2.2-11 155-277
ESR-100 1060-1980 9.8-58.8 4.57-9.05 1.35-12.15 3-15 309-377
ESR-125 980-1850 9.8-58.8 5.35-12.4 1.65-5.19 5.5-18.5 408-451
ESR-125C 970-1830 9.8-58.8 7.5-17.57 3.2-18.5 4-22 408-451
ESR-150 810-1730 9.8-58.8 10.37-27.15 3.84-40.82 7.5-45 688-848
ESR-175 970-1520 9.8-58.8 19.65-36.65 7.2-45.95 11-55 980-1080
ESR-200B 740-1450 9.8-58.8 19.65-44.8 10.15-60.44 15-75 1272-1546
ESR-200 810-1480 9.8-58.8 27.65-59.2 8.05-80,12 15-90 1272-1546
ESR-250B 1100-1480 9.8-58.8 54.77-77.55 19.97-90.97 30-110 1490-2454
ESR-250 990-1480 9.8-58.8 61.4-97.52 20.1-117.3 30-132 1490-2454
ESR-300 990-1480 9.8-58.8 87.1-138.1 26.4-167.8 37-185 3326-3446
ESR-350 730-1480 9.8-58.8 78.41-177.31   55-250  
ESR-50H 1230-2120 63.7-98 0.45-2.02 2.05-6.12 3-7.5 160–170
ESR-65H 1240-2130 63.7-98 0.78-2.53 2.89-7.55 4-11 198-230
ESR-80H 1140-1900 63.7-98 1.82-4.55 4.09-10.1 5.5-15 316-326
ESR-100H 1060-1980 63.7-98 2.65-8.06 6.36-17.2 7.5-22 398-459
ESR-125H 980-1850 63.7-98 4.64-11.23 8.92-24.2 11-30 544-630
ESR-150H 810-1730 63.7-98 9.53-25.76 17.16-65 18.5-75 752-1571
ESR-200H 810-1480 63.7-98 25.34-56.92 42.34-120 55-132 1426-1934
ESR-250H 990-1480 63.7-98 58-93.7 83.2-205 90-220 2980-3468
ESR300H 990-1480 63.7-98 86.9-134.1 114.7-270 132-280 3476-3998
ERF-245 650-980 9.8-98 47.5-97.4 16-183 18.5-200 3630-3690
ERF-250 650-980 9.8-98 61.6-120.4 19-227 22-250 4450-4500
ERF-290 650-980 9.8-78.4 92.3-128 22-213 30-250 4890-4710
ERF-295 650-980 9.8-78.4 97.3-152.5 23-227 30-250 4890-4880
ERF-297 650-980 9.8-78.4 87.5-167.6 26-249 30-280 5330-5520
ERF-300 650-980 9.8-78.4 101.5-188.7 29-278 37-315 5330-5520
ERF-350 650-980 9.8-78.4 126-224.9 34-249 45-280 5210-6470
ERG-300 590-730 9.8-98 128.3-196 38-362 45-400 9440-15710
ERG-350 590-730 9.8-98 159.3-231.6 43-420 55-450 9700-1571
ERG-400 590-730 9.8-83.3 203.1-290.9 52-449 75-500 10090-11390
ERG-445 590-730 9.8-73.5 229.7-327.8 58-477 75-560 10600-12230
ERG-450 590-730 9.8-73.5 262.4-366.2 64-496 75-560 10600-12230
ERG-500 590-730 9.8-63.7 327.4-452.4 78-529 90-560 12790-14620
ERF-240-V 650-980 -9.8- -49 38.1-78 13-76 18.5-90 3420-3285
ERF-245-V 650-980 -9.8- -49 47.5-97.4 16-95 22-110 3425-3360
ERF-250-V 650-980 -9.8- -49 63-120 19-117 22-132 3910-3830
ERF-290-V 650-980 -9.8- -49 72.6-144 22-136 30-160 4415-4270
ERF-295-V 650-980 -9.8- -49 76.6-152 23-145 30-160 4425-4485
ERF-297-V 650-980 -9.8- -49 84.3-166.8 26-160 30-180 5000-4980
ERF-300-V 650-980 -9.8- -49 97-192 29-178 37-200 5000-4980
ERF-350-V 650-980 -9.8- -49 116-225 34-209 45-250 5400-5700
ERG-300V 590-730 -9.8- -49 133-193 38-184 45-220 7800-9100
ERG-350V 590-730 -9.8- -49 163-231 43-216 55-250 9500-9470
ERG-400V 590-730 -9.8- -49 199-290 52-269 75-315 9900-10130
ERG-445V 590-730 -9.8- -49 224.8-326.9 58-303 75-355 9900-10130
ERG-450V 590-730 -9.8- -49 255-365 64-335 75-400 11230-11300
ERG-500V 590-730 -9.8- -49 314-452 78-412 132-450 13630-13850
ERF-245W 650-980 -13.3- -53.3 53.5-101 21.5-102 30-110 3630-3360
ERF-250W 650-980 -13.3- -53.3 69-127 26.5-127 30-160 3985-4115
ERF-290W 650-980 -13.3- -53.3 82.6-150 30.5-149 37-185 4340-4580
ERF-295W 650-980 -13.3- -53.3 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -13.3- -53.3 95-174 36-174 45-200 5230-5130
ERF-300W 650-980 -13.3- -53.3 109-195 40-193 55-220 5230-5130
ERF-350W 650-980 -13.3- -53.3 129-230 50-230 75-250 5840-5670
ERG-300W 590-730 -13.3- -53.3 142-197 52-201 75-220 9100-9000
ERF-350W 590-730 -13.3- -53.3 168-234.4 59-235.5 75-280 9500-9600
ERG-400W 590-730 -13.3- -53.3 220-276.6 71-292 90-315 9900-10130
ERG-445W 590-730 -13.3- -53.3 244-294.6 82-331 90-400 11230-11300
ERG450W 590-730 -13.3- -53.3 275-368.5 91-366 110-400 11230-11300
ETRF-250
(240,250)
650-980 98-196 64.8-112 135-355 160-400 8700-8600
ETRF-295
(245,295)
650-980 98-196 80.8-139 167-439 185-500 9200-9100
ETRF-300
(245,295)
650-980 98-176.4 102-174 206-497 250-560 10320-10500
ETRF-350
(245,295)
650-980 98-137.2 124-207 241-473 280-560 10700-11110
ETRG-400
(300,400)
590-740 98-176.4 205-273 380-773 450-900 21350-24200
ETRG-450
(350,450)
590-740 98-176.4 263-428 476-955 560-1000 24200-27600
ETRF-250W
(240,250)
650-980 -53.3–80 72-121 75.6-121 90-160 6100-6470
ETRF-295W
(245/295)
650-980 -53.3–80 93.8-154 99.5-186 110-220 7000-6400
ETRF-300W
(2505/300)
650-980 -53.3–80 116-189 115-220 132-250 7750-7760
EL81WD 580-980 9.8-58.8 54.2-130 18-151 45-185 3595
EL82WDB 580-980 9.8-58.8 72.8-161 22-191 45-220 3860
EL83WDA 580-980 9.8-58.9 101-213 28.5-202 45-220 4300
EL84WDA 580-980 9.8-58.8 129-267 35.4-252 45-280 4720
EL93WDA 580-730 9.8-49 230-329 56.4-311 75-355 7765
EL94WDA 580-730 9.8-49 263-373 64-353 75-400 8130
EL95WDA 490-580 9.8-58.8 308-434 81.4-414 90-450 11500
EL96WDA 580 58.8 381 497 560 11500
E397WN 1000-1650 40 5-9      
E408WN 870-1650 40 10-22      
E517WN 980-1580 40 20-30      
E520WN 930-1550 40 24-45      
E607WN 750-1250 40 45-76      
E610WN 750-1250 40 75-130      

Spare parts and structure of our roots blower:

Package of our Roots Blower

Pack into iron case, two layer,blower body and motor in lower layer, inlet/out silencer etc in upper layer

Roots blower pack method same as iron case, just change to Fumigation Free Plywood Case

Our factory is a professional manufacturer of Roots blowers which has over 20 years’ experience in machinery
manufacturing. It is located in Xihu (West Lake) Dis. East Industrial Park, 50 kilometers to the east of Shan EPT provincial
capital— HangZhou. Our company also has convenient traffic transportation, as it is 15 kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and 30 kilometers away from East HangZhou station of
ZheJiang -ZheJiang expressway.The leading product of our company is ESR -type Roots Blower. The roots
vacuum pump is a new type of high-efficiency roots blower, which is developed independently based on the
domestic and foreign advanced technologies. Several patented technologies have been adopted on Roots
Blower, and thus we have made significant effects in energy conservation and noise reduction, etc.. So far, our
company has invested more than 30,000,000 RMB to introduce such advanced professional equipment as
horizontal machining center, vertical machining center, two-way CNC surface planer, CNC lathe, CNC milling
machine, CNC planer, plane grinder, cylindrical grinding machine, and three coordinates testing machine.
Besides, we have taken various measures to standardize the process flow such as working and cooperating
with many scientific research units, colleges and universities at home and abroad. We also continuously try to
absorb and improve the domestic advanced production technologies, so as to promote the upgrading and
optimization of the product and make the product quality reach the advanced level at home and abroad.
ESR -type Roots Blower includes several series such as Three-leaves Type, Two-leaves Type and Centrifugal
Type,which can be further divided to hundreds of varieties. The products are widely used in sewage treatment,
pneumatic conveying,vacuum packaging, aquaculture, food processing, EPT power, petrochemical, cement,
mining and other industries. Our products have such advantages as low noise, energy saving, stable quality,
and long service life, etc.. With the sales outlets throughout the domestic capital cities, our products sell well all
over the country, and have been exported to North America,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other countries. Having got the ISO9001 International Quality System Certification, we have
established and improved the quality assurance of the products designing, manufacturing, and installation.
From the process of design, research and development to the finished products, we have got the whole
process controlled independently, thus providing the full basis and reliability guarantee for the products stability
and durability. Having a perfect sales network and after-sales service, we provide our customers with higher-
quality and more efficient service.All staff of our company sincerely welcome the broad masses of friends to
guide, and negotiate business with us.

Our Roots Blower Workshop

         Doosn Horzitonal Machine Center

The Application of the Roots Blower

Maintenance and inspection
(1) Check all fasteners and locating pins conditions whether they are loosening.
(2) Always check whether the leakage phenomenon of the body.
(3) Pay attention to lubrication, amount of grease and noises when running,
determine whether it works under the required conditions.
(4) Lubricant & grease: The lubricant is for medium load industrial gear oil
(grade 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash point ≥ 200ºC);
The grease is butter (synthetic lithium grease penetration 220-250, drop point ≥
190ºC). Replace the lubricant and grease after first 200 hours running, and replace
again after a moth running. Later, replace the lubricant and grease according to the
environment and lubricant (grease) quality; propose a suitable EPT for three
months.
(5) Always check the inlet air filter, clean or replace the filter in time.
(6) Blower overload sometimes not immediately displayed, so pay attention to
the intake and exhaust pressure, bearing temperature and the current increase trends
of motor to determine whether the blower works normally;
(7) Before disassembling the blower, the assembling relation and dimensions
must be recorded or measured, make marks on components to ensure the original
requirements after assembling.
(8) When newly machine or overhaul, the oil tank should be cleaned before use
and propose replace all grease after 8 hours running.

Common failure reason and troubleshooting

No Failure Possible reasons Elimination methods
1 Friction
between the
impeller
(1) Impurities on the impeller,
resulting in the gap is too small;
(2) Gear wear, resulting in a
large backlash;
(3) The gear is not well fixed,
can not maintain the impeller
synchronization;
(4) Bearing wear resulting in
clearance increasing.
(1) Remove dirt and check
whether there is damage parts;
(2) Adjust the gear gap, replace
the gears if the gear backlash is
greater than the average 30% to
50%;
(3)Re-assemble the gears, keep
the taper contact area is to 75%;
(4)Replace the bearing
2 Collision
between
impeller and
wall, the
impeller top
and casing
(1) Installation gap is not correct;
(2) operating pressure is too
high, exceeding the specified
value;
(3) Operating temperature is too high;
(4) Casing or base deformation,
positioning fan failure;
(5) Bearing axial location is not good
(1) Adjust the gap;
(2) Identify causes of
overloading, reduced the pressure
to the specified value;
(3) Check the installation
accuracy and reduce the pipe
tension;
(4) Check and repair bearings,
and to ensure the clearance
(5)Relocation
3 Temperature
too high
(1) Oil in tank is too much, too
thick or too dirty;
(2) Filter or silencer is blocked;
(3)The pressure is higher than
the specified value;
(4)Excessive wear of the
impeller, large gap;
(5)Poor ventilation, indoor
temperature is high, resulting in
inlet air’s high temperature;
(6) The rotating speed is too low,result in the belt slipping.
(1)Reduce the oil level or rely on
oil;
(2)Remove of blocking objects;
(3)Reducing the pressure through
the blower;
(4)Repair its clearance;
(5)Open vents to reduce room
temperature;
(6) Increase speed to prevent the
belt slipping.
4 Insufficient
flow
(1) The inlet filter is blocked ;
(2) Impeller wear and the gap
increases too much;
(3) Belt slipping;
(4) Large imports pressure loss;
(5) Pipeline ventilation leakage
(1) Clean the filter dust and
obstruction;
(2) Repair the gap;
(3)Tighten the belt and increase
the number of belts;
(4)Adjust the inlet pressure to the
specified value;
(5) Check and repair the pipeline
5 Oil leaking or
oil leaking
into the enclosure
(1)High tank position cause
leakage from the discharge port;
(2) Seal wear, resulting in shaft oil spills;
(3) The pressure is higher than
the specified value;

 
(1)Reduce the oil level;
(2)Replace the seals;
(3)Clear the air vents, 2mm diameter faucet is fixed in the
middle chamber, open the faucet
under the wall;
6 Abnormal
vibration and
noise
(1)Bearing clearance exceeds the
specified value or bearing wear;
(2) The gear backlash is too
large, not in a tight fixed;
(3) The foreign objects and dust
caused by the impeller and the
impeller, the impeller and the
housing collision;;
(4) the impeller shaft
deformation caused the collision
caused by overload,
(5) Friction between the impeller
and the inlet housing caused by
overheating;
(6) Unbalance of the impeller
caused by fouling or foreign
body;
(7) Anchor bolts or other
fasteners are loosened
(1)Replace bearings or bearing
seat;
(2)Reassemble gear and ensure
backlash;
(3)Cleaning blower, check the
case is damaged;
(4)Check the back pressure, check
the wheel and adjust gap;
(5)Check the filter and back
pressure, increase the gap
between the impeller inlet and the
casing;
(6)Clean the impeller and the
casing, to ensure that the impeller
clearance work;
(7) Tighten the anchor bolts and
leveling the base.
7 Motor
overload
(1)Compared with the required
pressure, the pressure difference
is large that the back pressure or
the inlet pressure is high;
(2) Compared with the
equipment requirements, blower
flow is too big, so its pressure
increases;
(3)Inlet filter is blocked, or outlet
pipe is obstructed or blocked ;
(4) Collusion or friction (stuck)
rotating parts;
(5) The oil level is too high;
(6) Narrow V-belt is overheat,
vibration is too large, or pulley
is too small
(1) Reduce the pressure to the
specified value;
(2) Exhaust the excess gas into
the atmosphere or reduce the
blower speed;
(3) Remove the obstructions;
(4)Immediately shut down, check
the reason;
(5) Adjust the oil to the correct
level;
(6) Check the belt tension, and
replaced it with large diameter
pulley.

Our Service

1. Pre sell service                                                                              2. After sell service                                          
a. recommend the suitable model                                             c. online technical support,                                                                                   
b. factory tour                                                                              d. whole life spare parts and techinical support

Gurantee

12 months gurantee for our roots blowers
 

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The use of original equipment manufacturer’s (OEM) part numbers or trademarks , e.g. CASE® and John Deere® are for reference purposes only and for indicating product use and compatibility. Our company and the listed EPT parts contained herein are not sponsored, approved, or manufactured by the OEM.

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Elt-125s  China  in   Yazd Iran (Islamic Republic of)   fenner grid coupling  price  High  in   Villahermosa Mexico   elecon fluid coupling  manufacturer  Efficiency Low Engergy Roots Vacuum Pump with top quality lowest price

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