We – EPG Team the greatest couplings and gears factory in China with 5 different branches. For far more details: Mobile/whatsapp/telegram/Kakao us at: 0086-13083988828 /

We make all types of roots blower, centrifugal blower, Our Main products are as beneath:

Kind	Diameter	Charge of flow	Force
ESR-MJ(Intensive Sort)	Φ50~Φ300mm	.five~140m³/min	9.8KPa~ninety eight.8Kpa
ESR(Normal Sort)	Φ50~Φ350mm	.5~140m³/min	nine.8KPa~78.4Kpa
ESR-H(Higher-pressure Kind)	Φ50~Φ350mm	.7~160m³/min	58.8KPa~ninety eight.8Kpa
ESR-V(Vacuum Pump)	Φ50~Φ350mm	.five~160m³/min	9.8KPa~53.3Kpa
EL Collection	Φ200~Φ600mm	20.3~750m³/min	9.8KPa~fifty eight.8Kpa
Multistage Centrifugal Blower or C-Sequence	Φ250~Φ500mm	fifty~500m³/min	9.8KPa~98Kpa
ERR-ERG Kind	Φ250~Φ500mm	a hundred and twenty~420m³/min	nine.8KPa~98.8Kpa

The working principle of the a few-blade roots blower: two three-lobed rotors are arranged 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 gas in the chamber is pushed to achieve the
function of blowing.

Attribute of our roots blower:
one. Large adjustment of the air quantity
two. Reduced Sounds
3. Substantial effectiveness
4. Lower power cosumption
five. Long time lifestyle
six. Dependable managing, easy servicing,modest footprint

The parameters of our roots blower:

Kind	Ratary Velocity (r/min)	Force Increase (Kpa)	Ability (m/min)	Shaft Energy (Kw)	Motor	Unit Maximn Fat(Kg)
					Power (Kw)
ESR-50	1100-2120	nine.8-fifty eight.8	.sixty five-2.fifty eight	.three-3.fifty four	.seventy five-4	128-158
ESR-65	1100-2130	nine.eight-fifty eight.eight	.94-3.66	.38-four.forty six	.seventy five-five.5	one hundred fifty five-185
ESR-eighty	1140-1900	nine.eight-fifty eight.eight	two.34-five.forty three	one.04-7.forty two	2.two-eleven	a hundred and fifty five-277
ESR-100	1060-1980	nine.eight-fifty eight.8	four.fifty seven-nine.05	one.35-twelve.15	3-fifteen	309-377
ESR-125	980-1850	9.eight-fifty eight.eight	5.35-twelve.four	1.65-five.19	five.5-eighteen.5	408-451
ESR-125C	970-1830	9.eight-58.eight	seven.five-17.57	3.two-eighteen.five	four-22	408-451
ESR-one hundred fifty	810-1730	9.eight-58.8	ten.37-27.fifteen	3.84-40.82	7.five-forty five	688-848
ESR-a hundred seventy five	970-1520	nine.eight-58.eight	19.sixty five-36.65	7.2-forty five.ninety five	eleven-fifty five	980-1080
ESR-200B	740-1450	9.eight-fifty eight.8	19.65-44.eight	10.fifteen-60.forty four	fifteen-75	1272-1546
ESR-200	810-1480	nine.eight-fifty eight.eight	27.sixty five-59.two	8.05-80,12	fifteen-ninety	1272-1546
ESR-250B	1100-1480	9.8-58.8	54.seventy seven-77.fifty five	19.97-90.97	30-110	1490-2454
ESR-250	990-1480	9.8-58.eight	61.4-ninety seven.52	20.1-117.three	thirty-132	1490-2454
ESR-300	990-1480	nine.8-fifty eight.8	87.one-138.1	26.4-167.eight	37-185	3326-3446
ESR-350	730-1480	9.eight-fifty eight.eight	78.forty one-177.31		55-250
ESR-50H	1230-2120	63.7-ninety eight	.45-two.02	2.05-six.twelve	3-7.5	160–170
ESR-65H	1240-2130	63.seven-98	.seventy eight-2.fifty three	two.89-seven.55	four-eleven	198-230
ESR-80H	1140-1900	sixty three.seven-98	one.eighty two-4.55	four.09-10.1	five.5-fifteen	316-326
ESR-100H	1060-1980	63.seven-98	2.65-8.06	six.36-17.two	7.5-22	398-459
ESR-125H	980-1850	sixty three.seven-98	four.64-11.23	8.92-24.two	eleven-thirty	544-630
ESR-150H	810-1730	sixty three.seven-98	nine.fifty three-25.seventy six	17.sixteen-sixty five	eighteen.five-seventy five	752-1571
ESR-200H	810-1480	sixty three.seven-ninety eight	25.34-56.ninety two	forty two.34-one hundred twenty	55-132	1426-1934
ESR-250H	990-1480	63.seven-ninety eight	58-ninety three.seven	eighty three.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	forty seven.5-97.four	sixteen-183	18.five-two hundred	3630-3690
ERF-250	650-980	9.8-ninety eight	sixty one.six-one hundred twenty.four	19-227	22-250	4450-4500
ERF-290	650-980	9.8-seventy eight.four	92.three-128	22-213	30-250	4890-4710
ERF-295	650-980	9.eight-seventy eight.4	97.three-152.five	23-227	thirty-250	4890-4880
ERF-297	650-980	nine.8-seventy eight.four	87.5-167.6	26-249	thirty-280	5330-5520
ERF-three hundred	650-980	nine.eight-78.four	101.five-188.7	29-278	37-315	5330-5520
ERF-350	650-980	nine.eight-78.4	126-224.9	34-249	45-280	5210-6470
ERG-300	590-730	9.8-ninety eight	128.three-196	38-362	forty five-400	9440-15710
ERG-350	590-730	nine.eight-98	159.3-231.6	43-420	fifty five-450	9700-1571
ERG-four hundred	590-730	9.8-83.three	203.one-290.nine	52-449	seventy five-five hundred	10090-11390
ERG-445	590-730	nine.eight-73.five	229.7-327.eight	fifty eight-477	seventy five-560	10600-12230
ERG-450	590-730	9.eight-73.five	262.4-366.two	64-496	seventy five-560	10600-12230
ERG-500	590-730	9.8-63.7	327.4-452.four	78-529	90-560	12790-14620
ERF-240-V	650-980	-nine.8- -49	38.1-seventy eight	thirteen-seventy six	eighteen.five-ninety	3420-3285
ERF-245-V	650-980	-9.eight- -49	forty seven.five-ninety seven.four	sixteen-95	22-110	3425-3360
ERF-250-V	650-980	-9.eight- -forty nine	63-a hundred and twenty	19-117	22-132	3910-3830
ERF-290-V	650-980	-9.8- -49	72.six-144	22-136	thirty-160	4415-4270
ERF-295-V	650-980	-nine.8- -49	seventy six.6-152	23-one hundred forty five	30-a hundred and sixty	4425-4485
ERF-297-V	650-980	-9.eight- -forty nine	84.three-166.eight	26-160	30-a hundred and 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- -49	116-225	34-209	forty five-250	5400-5700
ERG-300V	590-730	-9.eight- -49	133-193	38-184	forty five-220	7800-9100
ERG-350V	590-730	-9.8- -49	163-231	43-216	fifty five-250	9500-9470
ERG-400V	590-730	-9.eight- -49	199-290	52-269	75-315	9900-10130
ERG-445V	590-730	-9.8- -forty nine	224.eight-326.nine	58-303	75-355	9900-10130
ERG-450V	590-730	-nine.8- -49	255-365	64-335	seventy five-400	11230-11300
ERG-500V	590-730	-nine.8- -forty nine	314-452	seventy eight-412	132-450	13630-13850
ERF-245W	650-980	-13.3- -53.three	fifty three.five-one hundred and one	21.5-102	30-a hundred and ten	3630-3360
ERF-250W	650-980	-thirteen.three- -53.3	sixty nine-127	26.five-127	thirty-160	3985-4115
ERF-290W	650-980	-thirteen.three- -53.3	eighty two.six-a hundred and fifty	thirty.five-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.three- -53.3	ninety five-174	36-174	forty five-200	5230-5130
ERF-300W	650-980	-13.three- -53.3	109-195	40-193	55-220	5230-5130
ERF-350W	650-980	-13.three- -fifty three.3	129-230	fifty-230	seventy five-250	5840-5670
ERG-300W	590-730	-13.3- -53.3	142-197	52-201	75-220	9100-9000
ERF-350W	590-730	-thirteen.three- -53.three	168-234.4	fifty nine-235.5	seventy five-280	9500-9600
ERG-400W	590-730	-13.3- -53.3	220-276.six	71-292	ninety-315	9900-10130
ERG-445W	590-730	-thirteen.3- -53.three	244-294.6	82-331	ninety-four hundred	11230-11300
ERG450W	590-730	-13.3- -fifty three.3	275-368.five	ninety one-366	one hundred ten-four hundred	11230-11300
ETRF-250 (240,250)	650-980	98-196	64.eight-112	one hundred thirty five-355	160-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	ninety eight-137.2	124-207	241-473	280-560	10700-11110
ETRG-400 (three hundred,400)	590-740	ninety eight-176.four	205-273	380-773	450-900	21350-24200
ETRG-450 (350,450)	590-740	ninety eight-176.4	263-428	476-955	560-a thousand	24200-27600
ETRF-250W (240,250)	650-980	-fifty three.three–eighty	seventy two-121	75.six-121	ninety-160	6100-6470
ETRF-295W (245/295)	650-980	-fifty three.three–80	93.8-154	99.five-186	110-220	7000-6400
ETRF-300W (2505/300)	650-980	-fifty three.3–eighty	116-189	a hundred and fifteen-220	132-250	7750-7760
EL81WD	580-980	nine.eight-fifty eight.eight	54.two-a hundred thirty	eighteen-151	forty five-185	3595
EL82WDB	580-980	9.eight-fifty eight.8	seventy two.eight-161	22-191	forty five-220	3860
EL83WDA	580-980	9.eight-fifty eight.nine	101-213	28.5-202	45-220	4300
EL84WDA	580-980	nine.8-fifty eight.eight	129-267	35.4-252	forty five-280	4720
EL93WDA	580-730	nine.8-forty nine	230-329	fifty six.4-311	75-355	7765
EL94WDA	580-730	9.8-49	263-373	64-353	75-400	8130
EL95WDA	490-580	9.eight-fifty eight.eight	308-434	81.four-414	ninety-450	11500
EL96WDA	580	fifty eight.8	381	497	560	11500
E397WN	a thousand-1650	forty	5-nine
E408WN	870-1650	40	ten-22
E517WN	980-1580	forty	20-thirty
E520WN	930-1550	40	24-forty five
E607WN	750-1250	forty	45-seventy six
E610WN	750-1250	40	75-one hundred thirty

Spare components and framework of our roots blower:

Bundle of our Roots Blower

Pack into iron situation, two layer,blower body and motor in lower layer, inlet/out silencer and many others in upper layer

Roots blower pack technique same as iron situation, just change to Fumigation Totally free Plywood Situation

Our manufacturing unit is a professional company of Roots blowers which has over twenty years’ experience in equipment
manufacturing. It is found in Xihu (West Lake) Dis. East Industrial Park, 50 kilometers to the east of Shan EPT provincial
money— HangZhou. Our company also has handy targeted traffic transportation, as it is 15 kilometers away from
Diaozhen City station of HangZhou-HangZhou expressway, and thirty kilometers absent from East HangZhou station of
ZheJiang -ZheJiang expressway.The top merchandise of our firm is ESR -sort Roots Blower. The roots
vacuum pump is a new kind of large-performance roots blower, which is developed independently dependent on the
domestic and overseas advanced technologies. A number of patented technologies have been adopted on Roots
Blower, and hence we have produced considerable results in vitality conservation and noise reduction, and so on.. So considerably, our
company has invested more than 30,000,000 RMB to introduce this sort of advanced skilled products as
horizontal machining middle, vertical machining heart, two-way CNC surface planer, CNC lathe, CNC milling
equipment, CNC planer, airplane grinder, cylindrical grinding device, and 3 coordinates tests equipment.
In addition to, we have taken different steps to standardize the method flow this sort of as working and cooperating
with several scientific research units, colleges and universities at home and overseas. We also repeatedly attempt to
take up and enhance the domestic innovative production technologies, so as to promote the upgrading and
optimization of the merchandise and make the merchandise quality achieve the advanced degree at house and overseas.
ESR -type Roots Blower involves many collection these kinds of as Three-leaves Type, Two-leaves Type and Centrifugal
Sort,which can be further divided to hundreds of kinds. The merchandise are broadly utilized in sewage treatment method,
pneumatic conveying,vacuum packaging, aquaculture, foodstuff processing, EPT power, petrochemical, cement,
mining and other industries. Our products have this kind of advantages as lower sound, vitality saving, stable good quality,
and lengthy service life, and so forth.. With the income outlets throughout the domestic funds metropolitan areas, our goods market nicely all
more than the nation, and have been exported to North The usa,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other countries. Getting got the ISO9001 International Good quality Technique Certification, we have
recognized and enhanced the high quality assurance of the products designing, production, and installation.
From the process of design and style, investigation and advancement to the finished products, we have received the whole
procedure controlled independently, therefore supplying the entire foundation and dependability guarantee for the goods security
and sturdiness. Possessing a perfect sales community and following-revenue support, we offer our buyers with larger-
high quality and far more effective services.All workers of our firm sincerely welcome the wide masses of buddies to
guide, and negotiate enterprise with us.

Our Roots Blower Workshop

         Doosn Horzitonal Equipment Centre

The Software of the Roots Blower

Servicing and inspection
(one) Examine all fasteners and locating pins circumstances no matter whether they are loosening.
(2) Often examine regardless of whether the leakage phenomenon of the body.
(3) Shell out interest to lubrication, sum of grease and noises when operating,
figure out regardless of whether it operates below the required circumstances.
(four) Lubricant & grease: The lubricant is for medium load industrial gear oil
(grade 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash stage ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, drop position ≥
190ºC). Replace the lubricant and grease soon after very first 200 hrs running, and replace
yet again soon after a moth managing. Later, substitute the lubricant and grease in accordance to the
setting and lubricant (grease) quality suggest a suited EPT for three
months.
(5) Usually verify the inlet air filter, thoroughly clean or change the filter in time.
(six) Blower overload occasionally not quickly shown, so shell out attention to
the intake and exhaust pressure, bearing temperature and the existing increase traits
of motor to determine whether or not the blower functions normally
(7) Before disassembling the blower, the assembling relation and dimensions
must be recorded or calculated, make marks on parts to make sure the original
specifications after assembling.
(8) When freshly machine or overhaul, the oil tank ought to be cleaned just before use
and suggest substitute all grease soon after 8 hrs managing.

Common failure cause and troubleshooting

No	Failure	Possible factors	Elimination approaches
1	Friction between the impeller	(one) Impurities on the impeller, resulting in the hole is too little (2) Equipment dress in, ensuing in a huge backlash (three) The gear is not well fixed, can not keep the impeller synchronization (4) Bearing put on resulting in clearance rising.	(one) Remove dust and examine whether there is hurt areas (2) Alter the gear hole, exchange the gears if the gear backlash is better than the common 30% to 50% (3)Re-assemble the gears, keep the taper contact region is to 75% (four)Exchange the bearing
2	Collision amongst impeller and wall, the impeller top and casing	(one) Installation gap is not correct (two) operating pressure is way too high, exceeding the specified value (three) Operating temperature is way too substantial (4) Casing or base deformation, positioning fan failure (five) Bearing axial place is not very good	(one) Adjust the hole (2) Recognize leads to of overloading, decreased the force to the specified worth (3) Check the set up accuracy and lessen the pipe tension (four) Check out and fix bearings, and to make sure the clearance (5)Relocation
3	Temperature too large	(1) Oil in tank is too much, as well thick or as well dirty (2) Filter or silencer is blocked (three)The stress is higher than the specified worth (four)Excessive dress in of the impeller, large hole (5)Inadequate air flow, indoor temperature is high, resulting in inlet air’s higher temperature (six) The rotating speed is way too lower,result in the belt slipping.	(one)Reduce the oil degree or depend on oil (2)Remove of blocking objects (three)Minimizing the pressure by way of the blower (4)Mend its clearance (5)Open up vents to lessen space temperature (6) Improve velocity to avoid the belt slipping.
4	Insufficient circulation	(1) The inlet filter is blocked (2) Impeller wear and the hole will increase too much (three) Belt slipping (4) Large imports stress decline (5) Pipeline ventilation leakage	(one) Cleanse the filter dust and obstruction (two) Restore the hole (three)Tighten the belt and enhance the quantity of belts (four)Modify the inlet force to the specified value (5) Check out and mend the pipeline
five	Oil leaking or oil leaking into the enclosure	(1)Large tank placement cause leakage from the discharge port (2) Seal wear, resulting in shaft oil spills (three) The stress is higher than the specified worth	(one)Lessen the oil amount (2)Exchange the seals (3)Very clear the air vents, 2mm diameter faucet is fastened in the middle chamber, open up the faucet below the wall
6	Abnormal vibration and noise	(one)Bearing clearance exceeds the specified value or bearing use (2) The gear backlash is as well huge, not in a tight fixed (3) The overseas objects and dust induced by the impeller and the impeller, the impeller and the housing collision (4) the impeller shaft deformation caused the collision brought on by overload, (5) Friction in between the impeller and the inlet housing brought on by overheating (six) Unbalance of the impeller triggered by fouling or foreign physique (7) Anchor bolts or other fasteners are loosened	(one)Change bearings or bearing seat (2)Reassemble gear and make sure backlash (3)Cleansing blower, check out the circumstance is destroyed (four)Examine the back strain, examine the wheel and change hole (five)Verify the filter and back again force, enhance the gap in between the impeller inlet and the casing (six)Thoroughly clean the impeller and the casing, to make certain that the impeller clearance function (7) Tighten the anchor bolts and leveling the base.
7	Motor overload	(1)In contrast with the essential strain, the strain variation is large that the back stress or the inlet pressure is substantial (2) In comparison with the tools specifications, blower movement is also huge, so its pressure boosts (3)Inlet filter is blocked, or outlet pipe is obstructed or blocked (four) Collusion or friction (trapped) rotating components (5) The oil amount is also large (6) Slender V-belt is overheat, vibration is as well huge, or pulley is as well little	(1) Reduce the strain to the specified worth (2) Exhaust the extra gas into the atmosphere or lessen the blower pace (three) Eliminate the obstructions (4)Right away shut down, check the explanation (5) Adjust the oil to the appropriate amount (6) Check the belt rigidity, and replaced it with big diameter pulley.

Our Support

1. Pre sell service                                                                              two. Soon after offer service                                          
a. recommend the ideal model                                             c. on the web technical assist,                                                                                   
b. manufacturing facility tour                                                                              d. total daily life spare elements and techinical help

Gurantee

twelve months gurantee for our roots blowers
 

/ The use of authentic tools manufacturer’s (OEM) element figures or emblems , e.g. CASE® and John Deere® are for reference functions only and for indicating solution use and compatibility. Our organization and the listed EPT elements contained herein are not sponsored, accredited, or created by the OEM. /