Water China in Gwangju Republic of Korea rubber gear coupling near me shop Cooling in Bhopal India gear grip flexible shaft couplings sales High Efficiency Roots Vacuum Pump with top quality lowest price

Water  China  in   Gwangju Republic of Korea   rubber gear coupling  near me shop  Cooling  in   Bhopal India   gear grip flexible shaft couplings sales  High Efficiency Roots Vacuum Pump with top quality lowest price

We – EPG Group the biggest couplings and gears manufacturing unit in China with 5 various branches. For more details: Cellular/whatsapp/telegram/Kakao us at: 0086-13083988828 /

We make all kinds of roots blower, centrifugal blower, Our Primary products are as beneath:

Kind Diameter Fee of circulation Stress
ESR-MJ(Intense Variety) Φ50~Φ300mm .five~140m³/min 9.8KPa~98.8Kpa
ESR(Normal Variety) Φ50~Φ350mm .five~140m³/min 9.8KPa~78.4Kpa
ESR-H(Large-stress Type) Φ50~Φ350mm .7~160m³/min 58.8KPa~98.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .five~160m³/min nine.8KPa~53.3Kpa
EL Collection Φ200~Φ600mm twenty.3~750m³/min nine.8KPa~fifty eight.8Kpa
Multistage Centrifugal Blower
or C-Collection
Φ250~Φ500mm fifty~500m³/min nine.8KPa~98Kpa
ERR-ERG Type Φ250~Φ500mm one hundred twenty~420m³/min nine.8KPa~98.8Kpa

The working basic principle of the three-blade roots blower: two 3-lobed rotors are organized in the cavity, and the
suction port and the discharge port are opened on each sides of the cavity. Via the action of a pair of
synchronous gears, the two rotors rotate in opposite instructions and Relying on the mutual engagement of the two
rotors, the suction port and the discharge port are isolated, and the fuel in the chamber is pushed to achieve the
function of blowing.

Characteristic of our roots blower:
1. Large adjustment of the air volume
two. Low Sound
three. Substantial performance
four. Reduced strength cosumption
five. Extended time existence
six. Reputable operating, straightforward maintenance,tiny footprint

The parameters of our roots blower:

Sort Ratary Speed
Stress Rise
Shaft Electrical power
Motor Device Maximn
ESR-fifty 1100-2120 9.8-58.8 .sixty five-two.58 .3-3.fifty four .75-four 128-158
ESR-65 1100-2130 nine.8-58.eight .ninety four-three.66 .38-four.46 .75-five.5 one hundred fifty five-185
ESR-80 1140-1900 nine.8-58.eight two.34-five.43 one.04-7.42 2.two-eleven a hundred and fifty five-277
ESR-one hundred 1060-1980 9.8-58.eight four.57-9.05 1.35-twelve.15 three-fifteen 309-377
ESR-125 980-1850 9.eight-58.8 5.35-twelve.4 1.65-five.19 5.five-18.5 408-451
ESR-125C 970-1830 nine.eight-fifty eight.eight seven.5-17.fifty seven 3.2-eighteen.5 four-22 408-451
ESR-a hundred and fifty 810-1730 nine.eight-fifty eight.eight 10.37-27.fifteen three.84-forty.eighty two 7.5-forty five 688-848
ESR-one hundred seventy five 970-1520 nine.eight-fifty eight.eight 19.sixty five-36.sixty five seven.2-45.95 11-55 980-1080
ESR-200B 740-1450 9.8-fifty eight.eight 19.65-forty four.eight ten.fifteen-60.forty four 15-75 1272-1546
ESR-200 810-1480 9.eight-58.8 27.sixty five-fifty nine.two 8.05-eighty,12 fifteen-ninety 1272-1546
ESR-250B 1100-1480 nine.8-fifty eight.8 54.77-seventy seven.fifty five 19.97-90.97 30-110 1490-2454
ESR-250 990-1480 nine.8-fifty eight.eight 61.four-97.fifty two 20.one-117.three 30-132 1490-2454
ESR-three hundred 990-1480 nine.eight-fifty eight.eight 87.1-138.1 26.4-167.eight 37-185 3326-3446
ESR-350 730-1480 nine.8-fifty eight.eight seventy eight.forty one-177.31   55-250  
ESR-50H 1230-2120 sixty three.7-ninety eight .forty five-2.02 two.05-6.12 3-7.five 160–one hundred seventy
ESR-65H 1240-2130 sixty three.seven-ninety eight .78-2.53 2.89-7.55 4-eleven 198-230
ESR-80H 1140-1900 63.7-98 1.eighty two-four.55 4.09-10.1 five.5-fifteen 316-326
ESR-100H 1060-1980 63.7-ninety eight 2.sixty five-8.06 6.36-seventeen.2 seven.5-22 398-459
ESR-125H 980-1850 63.seven-98 four.64-11.23 eight.ninety two-24.2 eleven-thirty 544-630
ESR-150H 810-1730 sixty three.seven-98 nine.fifty three-twenty five.76 seventeen.16-sixty five 18.five-75 752-1571
ESR-200H 810-1480 63.7-ninety eight 25.34-56.ninety two forty two.34-a hundred and twenty 55-132 1426-1934
ESR-250H 990-1480 sixty three.seven-ninety eight 58-ninety three.7 83.2-205 ninety-220 2980-3468
ESR300H 990-1480 63.7-98 86.9-134.1 114.7-270 132-280 3476-3998
ERF-245 650-980 nine.8-ninety eight 47.five-ninety seven.four sixteen-183 eighteen.5-200 3630-3690
ERF-250 650-980 9.8-ninety eight sixty one.6-a hundred and twenty.4 19-227 22-250 4450-4500
ERF-290 650-980 9.eight-seventy eight.four 92.3-128 22-213 thirty-250 4890-4710
ERF-295 650-980 9.eight-78.four 97.three-152.five 23-227 thirty-250 4890-4880
ERF-297 650-980 9.eight-78.4 87.five-167.6 26-249 30-280 5330-5520
ERF-300 650-980 9.8-seventy eight.four a hundred and one.five-188.seven 29-278 37-315 5330-5520
ERF-350 650-980 9.8-seventy eight.four 126-224.9 34-249 forty five-280 5210-6470
ERG-three hundred 590-730 nine.8-98 128.three-196 38-362 forty five-400 9440-15710
ERG-350 590-730 9.eight-98 159.three-231.six 43-420 55-450 9700-1571
ERG-four hundred 590-730 nine.8-eighty three.three 203.1-290.9 52-449 seventy five-five hundred 10090-11390
ERG-445 590-730 nine.eight-seventy three.five 229.7-327.eight fifty eight-477 seventy five-560 10600-12230
ERG-450 590-730 nine.8-73.5 262.4-366.two 64-496 seventy five-560 10600-12230
ERG-five hundred 590-730 9.eight-sixty three.7 327.4-452.4 78-529 ninety-560 12790-14620
ERF-240-V 650-980 -9.8- -forty nine 38.one-seventy eight thirteen-seventy six eighteen.5-90 3420-3285
ERF-245-V 650-980 -9.8- -forty nine forty seven.five-ninety seven.4 16-95 22-a hundred and ten 3425-3360
ERF-250-V 650-980 -nine.eight- -49 sixty three-120 19-117 22-132 3910-3830
ERF-290-V 650-980 -9.8- -forty nine seventy two.6-one hundred forty four 22-136 thirty-a hundred and sixty 4415-4270
ERF-295-V 650-980 -9.eight- -forty nine 76.six-152 23-one hundred forty five thirty-160 4425-4485
ERF-297-V 650-980 -9.eight- -forty nine 84.three-166.eight 26-one hundred sixty thirty-180 5000-4980
ERF-300-V 650-980 -nine.eight- -forty nine 97-192 29-178 37-200 5000-4980
ERF-350-V 650-980 -9.8- -forty nine 116-225 34-209 45-250 5400-5700
ERG-300V 590-730 -nine.eight- -forty nine 133-193 38-184 45-220 7800-9100
ERG-350V 590-730 -nine.8- -49 163-231 forty three-216 fifty five-250 9500-9470
ERG-400V 590-730 -nine.eight- -49 199-290 fifty two-269 seventy five-315 9900-10130
ERG-445V 590-730 -9.8- -49 224.eight-326.nine fifty eight-303 75-355 9900-10130
ERG-450V 590-730 -nine.8- -forty nine 255-365 64-335 75-400 11230-11300
ERG-500V 590-730 -9.eight- -49 314-452 78-412 132-450 13630-13850
ERF-245W 650-980 -13.3- -fifty three.3 53.five-one zero one 21.five-102 thirty-110 3630-3360
ERF-250W 650-980 -thirteen.3- -53.3 69-127 26.5-127 thirty-160 3985-4115
ERF-290W 650-980 -thirteen.three- -fifty three.three 82.6-a hundred and fifty 30.five-149 37-185 4340-4580
ERF-295W 650-980 -thirteen.three- -fifty three.3 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -thirteen.three- -fifty three.3 95-174 36-174 forty five-two hundred 5230-5130
ERF-300W 650-980 -thirteen.3- -53.three 109-195 forty-193 fifty five-220 5230-5130
ERF-350W 650-980 -thirteen.three- -fifty three.three 129-230 50-230 seventy five-250 5840-5670
ERG-300W 590-730 -thirteen.three- -53.three 142-197 fifty two-201 75-220 9100-9000
ERF-350W 590-730 -13.3- -fifty three.3 168-234.four fifty nine-235.five seventy five-280 9500-9600
ERG-400W 590-730 -13.three- -fifty three.3 220-276.six 71-292 90-315 9900-10130
ERG-445W 590-730 -13.3- -53.three 244-294.six 82-331 90-four hundred 11230-11300
ERG450W 590-730 -13.3- -53.three 275-368.five 91-366 a hundred and ten-four hundred 11230-11300
650-980 ninety eight-196 64.eight-112 135-355 one hundred sixty-400 8700-8600
650-980 ninety eight-196 eighty.eight-139 167-439 185-five hundred 9200-9100
ETRF-three hundred
650-980 ninety eight-176.four 102-174 206-497 250-560 10320-10500
650-980 ninety eight-137.2 124-207 241-473 280-560 10700-11110
(three hundred,four hundred)
590-740 98-176.four 205-273 380-773 450-900 21350-24200
590-740 98-176.four 263-428 476-955 560-a thousand 24200-27600
650-980 -53.3–80 seventy two-121 75.6-121 ninety-160 6100-6470
650-980 -fifty three.3–80 ninety three.8-154 99.5-186 one hundred ten-220 7000-6400
(2505/three hundred)
650-980 -53.three–eighty 116-189 115-220 132-250 7750-7760
EL81WD 580-980 9.eight-58.eight fifty four.two-130 18-151 forty five-185 3595
EL82WDB 580-980 9.8-58.eight seventy two.eight-161 22-191 forty five-220 3860
EL83WDA 580-980 nine.8-fifty eight.9 101-213 28.5-202 45-220 4300
EL84WDA 580-980 nine.8-fifty eight.8 129-267 35.4-252 45-280 4720
EL93WDA 580-730 nine.8-forty nine 230-329 fifty six.4-311 seventy five-355 7765
EL94WDA 580-730 9.8-forty nine 263-373 sixty four-353 75-400 8130
EL95WDA 490-580 nine.eight-fifty eight.eight 308-434 81.4-414 90-450 11500
EL96WDA 580 fifty eight.8 381 497 560 11500
E397WN 1000-1650 forty 5-nine      
E408WN 870-1650 40 10-22      
E517WN 980-1580 40 twenty-30      
E520WN 930-1550 40 24-45      
E607WN 750-1250 forty forty five-76      
E610WN 750-1250 forty 75-130      

Spare areas and structure of our roots blower:

Deal of our Roots Blower

Pack into iron circumstance, two layer,blower human body and motor in reduced layer, inlet/out silencer and so on in higher layer

Roots blower pack strategy identical as iron scenario, just modify to Fumigation Totally free Plywood Circumstance

Our factory is a expert maker of Roots blowers which has above twenty years’ experience in equipment
production. It is found in Xihu (West Lake) Dis. East Industrial Park, fifty kilometers to the east of Shan EPT provincial
capital— HangZhou. Our firm also has convenient traffic transportation, as it is fifteen 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 firm is ESR -sort Roots Blower. The roots
vacuum pump is a new sort of higher-performance roots blower, which is created independently based mostly on the
domestic and international advanced technologies. A number of patented technologies have been adopted on Roots
Blower, and thus we have manufactured significant outcomes in energy conservation and noise reduction, and so on.. So much, our
organization has invested a lot more than thirty,000,000 RMB to introduce such innovative specialist equipment as
horizontal machining heart, vertical machining centre, two-way CNC area planer, CNC lathe, CNC milling
device, CNC planer, plane grinder, cylindrical grinding machine, and 3 coordinates testing equipment.
Apart from, we have taken a variety of actions to standardize the process stream these kinds of as operating and cooperating
with numerous scientific research units, colleges and universities at home and abroad. We also continually consider to
absorb and enhance the domestic innovative generation systems, so as to advertise the upgrading and
optimization of the product and make the item high quality achieve the advanced degree at home and overseas.
ESR -type Roots Blower contains a number of collection such as 3-leaves Sort, Two-leaves Variety and Centrifugal
Sort,which can be further divided to hundreds of types. The products are commonly utilized in sewage remedy,
pneumatic conveying,vacuum packaging, aquaculture, foodstuff processing, EPT electrical power, petrochemical, cement,
mining and other industries. Our merchandise have such advantages as low noise, energy saving, stable quality,
and lengthy provider lifestyle, etc.. With the product sales outlets throughout the domestic capital cities, our goods sell properly all
above the country, and have been exported to North The usa,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations around the world. Having received the ISO9001 Global Top quality Program Certification, we have
recognized and enhanced the good quality assurance of the products creating, producing, and installation.
From the approach of design, analysis and improvement to the completed goods, we have obtained the whole
procedure managed independently, thus offering the entire basis and dependability promise for the goods security
and toughness. Getting a perfect income network and right after-revenue services, we give our consumers with higher-
quality and more effective services.All staff of our organization sincerely welcome the broad masses of buddies to
guide, and negotiate business with us.

Our Roots Blower Workshop

         Doosn Horzitonal Device Heart

The Application of the Roots Blower

Upkeep and inspection
(1) Examine all fasteners and locating pins conditions regardless of whether they are loosening.
(two) Usually examine no matter whether the leakage phenomenon of the body.
(3) Pay out consideration to lubrication, volume of grease and noises when running,
decide whether it performs underneath the needed situations.
(4) Lubricant & grease: The lubricant is for medium load industrial gear oil
(quality 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash point ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, drop position ≥
190ºC). Replace the lubricant and grease soon after initial 200 several hours running, and change
yet again soon after a moth running. Later, change the lubricant and grease according to the
setting and lubricant (grease) top quality suggest a suitable EPT for a few
(five) Always verify the inlet air filter, clear or substitute the filter in time.
(six) Blower overload sometimes not instantly exhibited, so shell out focus to
the intake and exhaust strain, bearing temperature and the present enhance traits
of motor to determine whether the blower performs normally
(7) Just before disassembling the blower, the assembling relation and dimensions
should be recorded or measured, make marks on elements to make certain the unique
demands soon after assembling.
(8) When newly machine or overhaul, the oil tank ought to be cleaned prior to use
and propose replace all grease following 8 hours managing.

Typical failure purpose and troubleshooting

No Failure Possible reasons Elimination methods
one Friction
among the
(1) Impurities on the impeller,
resulting in the gap is too little
(2) Gear use, resulting in a
big backlash
(3) The equipment is not well mounted,
can not maintain the impeller
(4) Bearing dress in resulting in
clearance increasing.
(one) Get rid of dirt and check
whether or not there is hurt components
(two) Modify the equipment gap, replace
the gears if the gear backlash is
greater than the typical 30% to
(3)Re-assemble the gears, hold
the taper make contact with spot is to 75%
(4)Exchange the bearing
2 Collision
impeller and
wall, the
impeller best
and casing
(1) Installation gap is not appropriate
(2) operating force is also
substantial, exceeding the specified
(three) Running temperature is as well high
(four) Casing or foundation deformation,
positioning enthusiast failure
(five) Bearing axial area is not excellent
(one) Change the hole
(two) Discover brings about of
overloading, lowered the force
to the specified benefit
(3) Examine the installation
precision and reduce the pipe
(four) Verify and repair bearings,
and to guarantee the clearance
3 Temperature
as well high
(1) Oil in tank is too significantly, also
thick or too soiled
(2) Filter or silencer is blocked
(3)The pressure is increased than
the specified price
(four)Excessive wear of the
impeller, huge gap
(5)Inadequate air flow, indoor
temperature is large, resulting in
inlet air’s high temperature
(6) The rotating pace is also minimal,end result in the belt slipping.
(1)Reduce the oil level or depend on
(2)Remove of blocking objects
(three)Minimizing the pressure by way of
the blower
(4)Fix its clearance
(five)Open up vents to decrease room
(6) Boost speed to prevent the
belt slipping.
4 Insufficient
(1) The inlet filter is blocked
(2) Impeller put on and the hole
will increase as well significantly
(3) Belt slipping
(4) Big imports stress reduction
(5) Pipeline ventilation leakage
(1) Cleanse the filter dust and
(two) Repair the gap
(three)Tighten the belt and increase
the quantity of belts
(four)Modify the inlet strain to the
specified price
(5) Verify and fix the pipeline
5 Oil leaking or
oil leaking
into the enclosure
(1)High tank placement trigger
leakage from the discharge port
(two) Seal put on, resulting in shaft oil spills
(3) The strain is higher than
the specified worth

(1)Decrease the oil stage
(2)Replace the seals
(three)Obvious the air vents, 2mm diameter faucet is set in the
center chamber, open up the faucet
underneath the wall
six Irregular
vibration and
(one)Bearing clearance exceeds the
specified price or bearing use
(two) The equipment backlash is also
large, not in a limited fastened
(3) The overseas objects and dust
triggered by the impeller and the
impeller, the impeller and the
housing collision
(four) the impeller shaft
deformation induced the collision
triggered by overload,
(5) Friction between the impeller
and the inlet housing induced by
(6) Unbalance of the impeller
triggered by fouling or foreign
entire body
(7) Anchor bolts or other
fasteners are loosened
(1)Change bearings or bearing
(two)Reassemble equipment and make sure
(3)Cleansing blower, check out the
case is damaged
(4)Check the back force, check
the wheel and adjust hole
(5)Examine the filter and back
strain, enhance the hole
among the impeller inlet and the
(6)Thoroughly clean the impeller and the
casing, to make sure that the impeller
clearance function
(7) Tighten the anchor bolts and
leveling the foundation.
seven Motor
(1)In contrast with the essential
force, the stress variation
is huge that the again stress or
the inlet pressure is high
(two) In contrast with the
products demands, blower
movement is also massive, so its force
(3)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(four) Collusion or friction (stuck)
rotating elements
(5) The oil level is way too large
(six) Slender V-belt is overheat,
vibration is as well huge, or pulley
is as well small
(1) Minimize the strain to the
specified price
(two) Exhaust the surplus gas into
the environment or minimize the
blower pace
(three) Get rid of the obstructions
(4)Instantly shut down, check
the cause
(five) Change the oil to the correct
(six) Verify the belt pressure, and
replaced it with huge diameter

Our Services

1. Pre sell service                                                                              2. After promote service                                          
a. advocate the suited model                                             c. online complex assistance,                                                                                   
b. manufacturing unit tour                                                                              d. whole life spare areas and techinical help


twelve months gurantee for our roots blowers

/ The use of original tools manufacturer’s (OEM) part figures or logos , e.g. CASE® and John Deere® are for reference reasons only and for indicating merchandise use and compatibility. Our organization and the listed EPT elements contained herein are not sponsored, authorized, or manufactured by the OEM. /

Water  China  in   Gwangju Republic of Korea   rubber gear coupling  near me shop  Cooling  in   Bhopal India   gear grip flexible shaft couplings sales  High Efficiency Roots Vacuum Pump with top quality lowest price

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