We – EPG Group the greatest couplings and gears manufacturing unit in China with 5 various branches. For far more details: Cell/whatsapp/telegram/Kakao us at: 0086-13083988828 /
We make all varieties of roots blower, centrifugal blower, Our Main items are as below:
| Kind | Diameter | Fee of circulation | Pressure |
| ESR-MJ(Intense Type) | Φ50~Φ300mm | .5~140m³/min | 9.8KPa~98.8Kpa |
| ESR(Ordinary Type) | Φ50~Φ350mm | .five~140m³/min | nine.8KPa~78.4Kpa |
| ESR-H(High-stress Type) | Φ50~Φ350mm | .7~160m³/min | 58.8KPa~ninety eight.8Kpa |
| ESR-V(Vacuum Pump) | Φ50~Φ350mm | .five~160m³/min | nine.8KPa~fifty three.3Kpa |
| EL Series | Φ200~Φ600mm | twenty.three~750m³/min | 9.8KPa~fifty eight.8Kpa |
| Multistage Centrifugal Blower or C-Series |
Φ250~Φ500mm | 50~500m³/min | 9.8KPa~98Kpa |
| ERR-ERG Kind | Φ250~Φ500mm | 120~420m³/min | nine.8KPa~98.8Kpa |
The functioning principle of the three-blade roots blower: two three-lobed rotors are organized in the cavity, and the
suction port and the discharge port are opened on the two sides of the cavity. By means of 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 gasoline in the chamber is pushed to achieve the
function of blowing.
Function of our roots blower:
1. Huge adjustment of the air quantity
two. Low Sounds
three. High efficiency
4. Lower vitality cosumption
5. Prolonged time daily life
6. Reliable running, easy maintenance,tiny footprint
The parameters of our roots blower:
| Kind | Ratary Pace (r/min) |
Pressure Increase (Kpa) |
Ability (m/min) |
Shaft Energy (Kw) |
Motor | Device Maximn Weight(Kg) |
| Energy (Kw) |
||||||
| ESR-50 | 1100-2120 | nine.8-58.8 | .65-two.fifty eight | .3-three.fifty four | .seventy five-four | 128-158 |
| ESR-sixty five | 1100-2130 | nine.eight-58.eight | .ninety four-3.66 | .38-4.46 | .75-5.five | one hundred fifty five-185 |
| ESR-80 | 1140-1900 | 9.eight-58.8 | 2.34-five.forty three | one.04-7.42 | 2.2-11 | a hundred and fifty five-277 |
| ESR-100 | 1060-1980 | 9.eight-fifty eight.8 | 4.fifty seven-nine.05 | 1.35-twelve.fifteen | three-fifteen | 309-377 |
| ESR-one hundred twenty five | 980-1850 | nine.eight-58.eight | 5.35-12.four | 1.65-five.19 | five.five-18.5 | 408-451 |
| ESR-125C | 970-1830 | 9.8-58.eight | 7.five-seventeen.fifty seven | three.two-18.5 | 4-22 | 408-451 |
| ESR-one hundred fifty | 810-1730 | 9.eight-fifty eight.8 | 10.37-27.15 | three.eighty four-forty.eighty two | 7.five-45 | 688-848 |
| ESR-a hundred seventy five | 970-1520 | 9.8-fifty eight.8 | 19.65-36.sixty five | 7.two-forty five.95 | eleven-fifty five | 980-1080 |
| ESR-200B | 740-1450 | nine.8-58.eight | 19.sixty five-44.eight | 10.15-60.44 | 15-75 | 1272-1546 |
| ESR-200 | 810-1480 | nine.8-58.8 | 27.65-fifty nine.two | 8.05-80,twelve | fifteen-90 | 1272-1546 |
| ESR-250B | 1100-1480 | nine.8-58.8 | 54.seventy seven-seventy seven.55 | 19.97-ninety.ninety seven | 30-a hundred and ten | 1490-2454 |
| ESR-250 | 990-1480 | nine.eight-58.8 | 61.four-97.fifty two | 20.one-117.three | 30-132 | 1490-2454 |
| ESR-300 | 990-1480 | 9.8-58.eight | 87.1-138.1 | 26.4-167.eight | 37-185 | 3326-3446 |
| ESR-350 | 730-1480 | nine.8-fifty eight.8 | seventy eight.41-177.31 | fifty five-250 | ||
| ESR-50H | 1230-2120 | 63.7-98 | .forty five-two.02 | two.05-6.12 | three-7.five | a hundred and sixty–a hundred and seventy |
| ESR-65H | 1240-2130 | sixty three.seven-ninety eight | .seventy eight-2.fifty three | two.89-seven.55 | 4-eleven | 198-230 |
| ESR-80H | 1140-1900 | 63.7-ninety eight | 1.eighty two-four.fifty five | four.09-ten.one | five.five-fifteen | 316-326 |
| ESR-100H | 1060-1980 | 63.7-98 | 2.sixty five-eight.06 | six.36-17.2 | 7.five-22 | 398-459 |
| ESR-125H | 980-1850 | 63.seven-98 | 4.sixty four-11.23 | 8.92-24.2 | 11-30 | 544-630 |
| ESR-150H | 810-1730 | sixty three.seven-ninety eight | 9.53-25.seventy six | seventeen.sixteen-sixty five | eighteen.five-seventy five | 752-1571 |
| ESR-200H | 810-1480 | sixty three.7-98 | twenty five.34-fifty six.92 | forty two.34-one hundred twenty | fifty five-132 | 1426-1934 |
| ESR-250H | 990-1480 | sixty three.seven-ninety eight | fifty eight-ninety three.7 | 83.2-205 | ninety-220 | 2980-3468 |
| ESR300H | 990-1480 | sixty three.7-98 | 86.nine-134.1 | 114.seven-270 | 132-280 | 3476-3998 |
| ERF-245 | 650-980 | 9.eight-98 | 47.5-97.4 | sixteen-183 | 18.5-200 | 3630-3690 |
| ERF-250 | 650-980 | nine.eight-ninety eight | 61.six-one hundred twenty.four | 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-seventy eight.4 | 97.three-152.five | 23-227 | 30-250 | 4890-4880 |
| ERF-297 | 650-980 | nine.eight-78.4 | 87.five-167.6 | 26-249 | thirty-280 | 5330-5520 |
| ERF-300 | 650-980 | nine.8-78.four | one zero one.5-188.7 | 29-278 | 37-315 | 5330-5520 |
| ERF-350 | 650-980 | nine.8-78.four | 126-224.9 | 34-249 | 45-280 | 5210-6470 |
| ERG-three hundred | 590-730 | nine.eight-98 | 128.three-196 | 38-362 | forty five-four hundred | 9440-15710 |
| ERG-350 | 590-730 | nine.8-98 | 159.3-231.six | forty three-420 | fifty five-450 | 9700-1571 |
| ERG-four hundred | 590-730 | nine.8-83.3 | 203.1-290.9 | 52-449 | 75-500 | 10090-11390 |
| ERG-445 | 590-730 | nine.8-seventy three.five | 229.seven-327.eight | fifty eight-477 | seventy five-560 | 10600-12230 |
| ERG-450 | 590-730 | nine.eight-seventy three.five | 262.four-366.2 | sixty four-496 | seventy five-560 | 10600-12230 |
| ERG-500 | 590-730 | nine.eight-63.7 | 327.four-452.4 | 78-529 | ninety-560 | 12790-14620 |
| ERF-240-V | 650-980 | -nine.8- -49 | 38.1-78 | thirteen-seventy six | eighteen.5-90 | 3420-3285 |
| ERF-245-V | 650-980 | -9.8- -forty nine | 47.5-97.four | 16-95 | 22-one hundred ten | 3425-3360 |
| ERF-250-V | 650-980 | -9.8- -forty nine | 63-one hundred twenty | 19-117 | 22-132 | 3910-3830 |
| ERF-290-V | 650-980 | -nine.eight- -49 | 72.six-one hundred forty four | 22-136 | 30-160 | 4415-4270 |
| ERF-295-V | 650-980 | -nine.eight- -forty nine | 76.six-152 | 23-145 | 30-160 | 4425-4485 |
| ERF-297-V | 650-980 | -9.eight- -forty nine | eighty four.three-166.eight | 26-a hundred and sixty | thirty-one hundred eighty | 5000-4980 |
| ERF-300-V | 650-980 | -nine.eight- -49 | ninety seven-192 | 29-178 | 37-200 | 5000-4980 |
| ERF-350-V | 650-980 | -nine.eight- -forty nine | 116-225 | 34-209 | forty five-250 | 5400-5700 |
| ERG-300V | 590-730 | -nine.eight- -forty nine | 133-193 | 38-184 | forty five-220 | 7800-9100 |
| ERG-350V | 590-730 | -nine.eight- -forty nine | 163-231 | 43-216 | fifty five-250 | 9500-9470 |
| ERG-400V | 590-730 | -nine.eight- -forty nine | 199-290 | 52-269 | 75-315 | 9900-10130 |
| ERG-445V | 590-730 | -9.8- -forty nine | 224.8-326.9 | fifty eight-303 | 75-355 | 9900-10130 |
| ERG-450V | 590-730 | -9.eight- -49 | 255-365 | sixty four-335 | seventy five-four hundred | 11230-11300 |
| ERG-500V | 590-730 | -9.eight- -49 | 314-452 | 78-412 | 132-450 | 13630-13850 |
| ERF-245W | 650-980 | -thirteen.three- -53.3 | 53.5-a hundred and one | 21.5-102 | thirty-110 | 3630-3360 |
| ERF-250W | 650-980 | -13.three- -fifty three.three | sixty nine-127 | 26.five-127 | 30-160 | 3985-4115 |
| ERF-290W | 650-980 | -13.three- -fifty three.3 | eighty two.6-150 | 30.5-149 | 37-185 | 4340-4580 |
| ERF-295W | 650-980 | -thirteen.3- -53.three | 87-158 | 32-158 | 37-185 | 4440-4580 |
| ERF-297W | 650-980 | -thirteen.3- -53.3 | ninety five-174 | 36-174 | forty five-200 | 5230-5130 |
| ERF-300W | 650-980 | -13.3- -53.3 | 109-195 | 40-193 | 55-220 | 5230-5130 |
| ERF-350W | 650-980 | -thirteen.three- -fifty three.3 | 129-230 | 50-230 | 75-250 | 5840-5670 |
| ERG-300W | 590-730 | -13.3- -fifty three.3 | 142-197 | 52-201 | 75-220 | 9100-9000 |
| ERF-350W | 590-730 | -13.three- -53.three | 168-234.4 | 59-235.five | 75-280 | 9500-9600 |
| ERG-400W | 590-730 | -13.three- -fifty three.3 | 220-276.6 | seventy one-292 | 90-315 | 9900-10130 |
| ERG-445W | 590-730 | -thirteen.3- -fifty three.3 | 244-294.six | eighty two-331 | ninety-400 | 11230-11300 |
| ERG450W | 590-730 | -13.three- -fifty three.3 | 275-368.five | ninety one-366 | one hundred ten-400 | 11230-11300 |
| ETRF-250 (240,250) |
650-980 | 98-196 | 64.8-112 | 135-355 | a hundred and sixty-four hundred | 8700-8600 |
| ETRF-295 (245,295) |
650-980 | ninety eight-196 | eighty.8-139 | 167-439 | 185-five hundred | 9200-9100 |
| ETRF-three hundred (245,295) |
650-980 | ninety eight-176.four | 102-174 | 206-497 | 250-560 | 10320-10500 |
| ETRF-350 (245,295) |
650-980 | 98-137.two | 124-207 | 241-473 | 280-560 | 10700-11110 |
| ETRG-four hundred (300,400) |
590-740 | 98-176.4 | 205-273 | 380-773 | 450-900 | 21350-24200 |
| ETRG-450 (350,450) |
590-740 | ninety eight-176.4 | 263-428 | 476-955 | 560-one thousand | 24200-27600 |
| ETRF-250W (240,250) |
650-980 | -53.3–80 | seventy two-121 | seventy five.6-121 | 90-one hundred sixty | 6100-6470 |
| ETRF-295W (245/295) |
650-980 | -53.three–eighty | ninety three.8-154 | ninety nine.five-186 | 110-220 | 7000-6400 |
| ETRF-300W (2505/300) |
650-980 | -53.3–eighty | 116-189 | one hundred fifteen-220 | 132-250 | 7750-7760 |
| EL81WD | 580-980 | nine.eight-fifty eight.8 | fifty four.two-130 | eighteen-151 | forty five-185 | 3595 |
| EL82WDB | 580-980 | nine.8-58.eight | seventy two.8-161 | 22-191 | forty five-220 | 3860 |
| EL83WDA | 580-980 | 9.8-58.nine | 101-213 | 28.five-202 | forty five-220 | 4300 |
| EL84WDA | 580-980 | nine.eight-58.8 | 129-267 | 35.4-252 | forty five-280 | 4720 |
| EL93WDA | 580-730 | 9.8-49 | 230-329 | fifty six.four-311 | seventy five-355 | 7765 |
| EL94WDA | 580-730 | nine.8-49 | 263-373 | 64-353 | 75-400 | 8130 |
| EL95WDA | 490-580 | 9.eight-fifty eight.eight | 308-434 | eighty one.four-414 | ninety-450 | 11500 |
| EL96WDA | 580 | 58.eight | 381 | 497 | 560 | 11500 |
| E397WN | a thousand-1650 | 40 | five-9 | |||
| E408WN | 870-1650 | 40 | ten-22 | |||
| E517WN | 980-1580 | forty | twenty-30 | |||
| E520WN | 930-1550 | 40 | 24-forty five | |||
| E607WN | 750-1250 | forty | 45-76 | |||
| E610WN | 750-1250 | 40 | seventy five-130 |
Spare parts and construction of our roots blower:
Package of our Roots Blower
Pack into iron scenario, two layer,blower human body and motor in reduced layer, inlet/out silencer and so on in higher layer
Roots blower pack method same as iron circumstance, just modify to Fumigation Free Plywood Circumstance
Our factory is a expert company of Roots blowers which has over twenty years’ experience in machinery
manufacturing. It is found in Xihu (West Lake) Dis. East Industrial Park, fifty kilometers to the east of Shan EPT provincial
cash— HangZhou. Our organization also has handy site visitors transportation, as it is fifteen kilometers absent from
Diaozhen City station of HangZhou-HangZhou expressway, and thirty kilometers absent from East HangZhou station of
ZheJiang -ZheJiang expressway.The major merchandise of our company is ESR -kind Roots Blower. The roots
vacuum pump is a new variety of substantial-efficiency roots blower, which is developed independently based mostly on the
domestic and international superior systems. Many patented technologies have been adopted on Roots
Blower, and thus we have manufactured substantial results in energy conservation and noise reduction, and so forth.. So far, our
firm has invested a lot more than 30,000,000 RMB to introduce such sophisticated expert equipment as
horizontal machining middle, vertical machining middle, two-way CNC surface planer, CNC lathe, CNC milling
equipment, CNC planer, plane grinder, cylindrical grinding machine, and three coordinates screening machine.
Apart from, we have taken a variety of actions to standardize the approach flow these kinds of as working and cooperating
with several scientific research units, schools and universities at home and overseas. We also continually try to
take in and increase the domestic innovative generation systems, so as to market the upgrading and
optimization of the item and make the product high quality achieve the superior stage at home and abroad.
ESR -kind Roots Blower involves a number of sequence such as 3-leaves Sort, Two-leaves Type and Centrifugal
Type,which can be even more divided to hundreds of varieties. The products are extensively utilised in sewage treatment method,
pneumatic conveying,vacuum packaging, aquaculture, meals processing, EPT power, petrochemical, cement,
mining and other industries. Our products have this kind of rewards as low noise, strength preserving, secure high quality,
and prolonged provider existence, and many others.. With the product sales outlets throughout the domestic funds towns, our goods market properly all
above the nation, and have been exported to North The usa,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations around the world. Obtaining received the ISO9001 Global Quality Technique Certification, we have
set up and enhanced the top quality assurance of the goods designing, production, and installation.
From the procedure of design, investigation and development to the completed goods, we have received the whole
method controlled independently, hence providing the complete foundation and trustworthiness guarantee for the goods security
and sturdiness. Possessing a perfect revenue network and following-sales service, we offer our customers with larger-
top quality and much more productive services.All employees of our organization sincerely welcome the broad masses of close friends to
manual, and negotiate enterprise with us.
Our Roots Blower Workshop
Doosn Horzitonal Equipment Center
The Software of the Roots Blower
Maintenance and inspection
(one) Verify all fasteners and locating pins circumstances whether they are loosening.
(2) Constantly check out whether or not the leakage phenomenon of the entire body.
(3) Shell out attention to lubrication, volume of grease and noises when managing,
establish regardless of whether it operates underneath the essential circumstances.
(4) Lubricant & grease: The lubricant is for medium load industrial equipment oil
(quality 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash stage ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, drop level ≥
190ºC). Exchange the lubricant and grease following very first 200 hrs operating, and change
yet again right after a moth running. Afterwards, substitute the lubricant and grease in accordance to the
setting and lubricant (grease) top quality suggest a ideal EPT for 3
months.
(5) Always check out the inlet air filter, thoroughly clean or substitute the filter in time.
(six) Blower overload at times not immediately displayed, so shell out interest to
the ingestion and exhaust force, bearing temperature and the existing boost traits
of motor to determine whether or not the blower functions normally
(seven) Just before disassembling the blower, the assembling relation and dimensions
need to be recorded or measured, make marks on elements to make certain the first
specifications following assembling.
(8) When recently machine or overhaul, the oil tank must be cleaned prior to use
and suggest substitute all grease soon after eight several hours working.
Frequent failure purpose and troubleshooting
| No | Failure | Feasible factors | Elimination methods |
| 1 | Friction between the impeller |
(one) Impurities on the impeller, ensuing in the gap is also small (2) Gear wear, ensuing in a massive backlash (three) The gear is not well fastened, can not maintain the impeller synchronization (4) Bearing dress in resulting in clearance increasing. |
(one) Take away filth and examine regardless of whether there is damage elements (two) Alter the gear hole, replace the gears if the gear backlash is increased than the common 30% to fifty% (three)Re-assemble the gears, preserve the taper make contact with spot is to 75% (4)Exchange the bearing |
| two | Collision between impeller and wall, the impeller best and casing |
(one) Set up gap is not correct (2) running stress is as well large, exceeding the specified benefit (3) Working temperature is also high (four) Casing or foundation deformation, positioning enthusiast failure (five) Bearing axial area is not very good |
(1) Adjust the hole (2) Recognize triggers of overloading, diminished the pressure to the specified worth (3) Check the installation precision and minimize the pipe rigidity (four) Examine and mend bearings, and to ensure the clearance (five)Relocation |
| three | Temperature way too substantial |
(one) Oil in tank is as well much, as well thick or also dirty (2) Filter or silencer is blocked (3)The force is greater than the specified benefit (4)Too much wear of the impeller, huge hole (5)Bad air flow, indoor temperature is high, ensuing in inlet air’s large temperature (six) The rotating pace is as well lower,end result in the belt slipping. |
(1)Lessen the oil stage or count on oil (two)Remove of blocking objects (three)Minimizing the strain via the blower (4)Restore its clearance (5)Open vents to reduce space temperature (6) Increase pace to prevent the belt slipping. |
| four | Insufficient movement |
(1) The inlet filter is blocked (two) Impeller put on and the gap boosts also a lot (3) Belt slipping (4) Huge imports strain decline (five) Pipeline air flow leakage |
(1) Cleanse the filter dust and obstruction (two) Restore the gap (3)Tighten the belt and increase the amount of belts (4)Modify the inlet pressure to the specified worth (5) Check out and repair the pipeline |
| 5 | Oil leaking or oil leaking into the enclosure |
(1)High tank placement trigger leakage from the discharge port (two) Seal wear, resulting in shaft oil spills (three) The force is larger than the specified price |
(1)Minimize the oil level (two)Substitute the seals (three)Very clear the air vents, 2mm diameter faucet is fastened in the middle chamber, open up the faucet beneath the wall |
| 6 | Abnormal vibration and sound |
(1)Bearing clearance exceeds the specified price or bearing wear (2) The equipment backlash is as well large, not in a limited mounted (three) The international objects and dust induced by the impeller and the impeller, the impeller and the housing collision (4) the impeller shaft deformation triggered the collision caused by overload, (5) Friction in between the impeller and the inlet housing caused by overheating (6) Unbalance of the impeller caused by fouling or overseas physique (seven) Anchor bolts or other fasteners are loosened |
(one)Exchange bearings or bearing seat (2)Reassemble gear and ensure backlash (3)Cleaning blower, check the circumstance is destroyed (4)Check the back again strain, check the wheel and change hole (5)Examine the filter and again stress, boost the gap among the impeller inlet and the casing (6)Cleanse the impeller and the casing, to ensure that the impeller clearance perform (seven) Tighten the anchor bolts and leveling the foundation. |
| seven | Motor overload |
(one)In contrast with the necessary stress, the pressure big difference is large that the back force or the inlet stress is high (two) Compared with the gear needs, blower flow is as well massive, so its stress will increase (3)Inlet filter is blocked, or outlet pipe is obstructed or blocked (4) Collusion or friction (caught) rotating parts (5) The oil level is too high (6) Slender V-belt is overheat, vibration is as well massive, or pulley is as well small |
(one) Decrease the strain to the specified benefit (two) Exhaust the extra gas into the ambiance or minimize the blower velocity (three) Get rid of the obstructions (four)Quickly shut down, examine the reason (5) Change the oil to the appropriate stage (six) Verify the belt tension, and changed it with huge diameter pulley. |
Our Support
1. Pre market service 2. After market service
a. recommend the ideal model c. on-line technological support,
b. manufacturing unit tour d. total existence spare areas and techinical help
Gurantee
12 months gurantee for our roots blowers
/ The use of first tools manufacturer’s (OEM) part quantities or trademarks , e.g. CASE® and John Deere® are for reference needs only and for indicating solution use and compatibility. Our company and the shown EPT parts contained herein are not sponsored, accepted, or produced by the OEM. /
