We – EPG Group the largest couplings and gears factory in China with 5 different branches. For more specifics: Cell/whatsapp/telegram/Kakao us at: 0086-13083988828 /

We make all types of roots blower, centrifugal blower, Our Major products are as underneath:

Kind	Diameter	Fee of stream	Strain
ESR-MJ(Intensive Variety)	Φ50~Φ300mm	.5~140m³/min	9.8KPa~98.8Kpa
ESR(Normal Type)	Φ50~Φ350mm	.5~140m³/min	9.8KPa~78.4Kpa
ESR-H(Large-force Variety)	Φ50~Φ350mm	.seven~160m³/min	58.8KPa~ninety eight.8Kpa
ESR-V(Vacuum Pump)	Φ50~Φ350mm	.5~160m³/min	nine.8KPa~fifty three.3Kpa
EL Sequence	Φ200~Φ600mm	twenty.three~750m³/min	nine.8KPa~58.8Kpa
Multistage Centrifugal Blower or C-Sequence	Φ250~Φ500mm	50~500m³/min	9.8KPa~98Kpa
ERR-ERG Variety	Φ250~Φ500mm	120~420m³/min	9.8KPa~98.8Kpa

The functioning basic principle of the a few-blade roots blower: two a few-lobed rotors are organized in the cavity, and the
suction port and the discharge port are opened on equally sides of the cavity. By way 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 attain the
function of blowing.

Function of our roots blower:
one. Massive adjustment of the air quantity
2. Low Noise
three. Large efficiency
4. Lower power cosumption
5. Lengthy time daily life
six. Trustworthy working, simple servicing,little footprint

The parameters of our roots blower:

Type	Ratary Velocity (r/min)	Pressure Rise (Kpa)	Capability (m/min)	Shaft Electrical power (Kw)	Motor	Device Maximn Excess weight(Kg)
					Electricity (Kw)
ESR-50	1100-2120	nine.8-fifty eight.eight	.sixty five-two.58	.three-3.54	.75-4	128-158
ESR-65	1100-2130	nine.8-fifty eight.8	.94-three.sixty six	.38-four.forty six	.seventy five-five.5	155-185
ESR-eighty	1140-1900	nine.eight-fifty eight.eight	two.34-5.forty three	one.04-7.forty two	2.2-eleven	one hundred fifty five-277
ESR-one hundred	1060-1980	9.eight-fifty eight.eight	4.57-9.05	1.35-twelve.fifteen	three-fifteen	309-377
ESR-a hundred twenty five	980-1850	nine.eight-58.8	five.35-12.four	1.sixty five-five.19	five.five-18.5	408-451
ESR-125C	970-1830	nine.8-fifty eight.eight	seven.five-seventeen.fifty seven	three.two-eighteen.five	4-22	408-451
ESR-one hundred fifty	810-1730	9.8-fifty eight.8	10.37-27.15	3.eighty four-40.82	seven.five-forty five	688-848
ESR-one hundred seventy five	970-1520	nine.8-58.eight	19.65-36.65	7.2-forty five.95	eleven-fifty five	980-1080
ESR-200B	740-1450	9.8-58.eight	19.sixty five-44.eight	10.15-sixty.44	fifteen-75	1272-1546
ESR-two hundred	810-1480	nine.eight-fifty eight.8	27.sixty five-fifty nine.two	eight.05-80,twelve	fifteen-90	1272-1546
ESR-250B	1100-1480	nine.8-fifty eight.eight	fifty four.77-77.55	19.97-90.97	30-one hundred ten	1490-2454
ESR-250	990-1480	nine.8-58.eight	sixty one.4-97.fifty two	twenty.1-117.3	thirty-132	1490-2454
ESR-three hundred	990-1480	nine.8-58.8	87.1-138.one	26.4-167.8	37-185	3326-3446
ESR-350	730-1480	nine.eight-fifty eight.eight	seventy eight.forty one-177.31		55-250
ESR-50H	1230-2120	63.7-98	.forty five-two.02	two.05-6.twelve	3-seven.five	160–one hundred seventy
ESR-65H	1240-2130	63.seven-ninety eight	.seventy eight-two.53	2.89-seven.fifty five	four-11	198-230
ESR-80H	1140-1900	63.seven-98	one.eighty two-4.55	4.09-ten.1	five.5-fifteen	316-326
ESR-100H	1060-1980	sixty three.7-ninety eight	2.65-eight.06	six.36-17.two	seven.five-22	398-459
ESR-125H	980-1850	sixty three.7-ninety eight	four.64-eleven.23	eight.ninety two-24.two	eleven-30	544-630
ESR-150H	810-1730	63.seven-98	9.53-25.seventy six	17.16-65	18.5-seventy five	752-1571
ESR-200H	810-1480	sixty three.7-98	25.34-56.92	forty two.34-one hundred twenty	55-132	1426-1934
ESR-250H	990-1480	sixty three.seven-ninety eight	fifty eight-93.seven	eighty three.two-205	ninety-220	2980-3468
ESR300H	990-1480	63.7-98	86.nine-134.1	114.seven-270	132-280	3476-3998
ERF-245	650-980	nine.8-ninety eight	47.five-97.4	16-183	eighteen.5-200	3630-3690
ERF-250	650-980	nine.8-ninety eight	61.6-a hundred and twenty.4	19-227	22-250	4450-4500
ERF-290	650-980	9.eight-78.4	ninety two.3-128	22-213	30-250	4890-4710
ERF-295	650-980	9.8-seventy eight.4	ninety seven.3-152.5	23-227	30-250	4890-4880
ERF-297	650-980	nine.8-78.4	87.five-167.6	26-249	thirty-280	5330-5520
ERF-three hundred	650-980	nine.8-78.four	101.5-188.seven	29-278	37-315	5330-5520
ERF-350	650-980	nine.eight-seventy eight.4	126-224.9	34-249	45-280	5210-6470
ERG-three hundred	590-730	9.8-98	128.3-196	38-362	forty five-four hundred	9440-15710
ERG-350	590-730	nine.eight-98	159.three-231.six	43-420	55-450	9700-1571
ERG-400	590-730	9.eight-83.3	203.1-290.9	52-449	75-500	10090-11390
ERG-445	590-730	9.eight-seventy three.5	229.7-327.eight	58-477	seventy five-560	10600-12230
ERG-450	590-730	nine.eight-73.five	262.4-366.two	sixty four-496	75-560	10600-12230
ERG-500	590-730	9.eight-sixty three.seven	327.four-452.four	78-529	90-560	12790-14620
ERF-240-V	650-980	-nine.eight- -forty nine	38.one-78	thirteen-seventy six	18.five-90	3420-3285
ERF-245-V	650-980	-nine.8- -forty nine	forty seven.5-ninety seven.four	16-ninety five	22-110	3425-3360
ERF-250-V	650-980	-9.eight- -forty nine	63-one hundred twenty	19-117	22-132	3910-3830
ERF-290-V	650-980	-nine.eight- -49	seventy two.6-144	22-136	30-one hundred sixty	4415-4270
ERF-295-V	650-980	-nine.8- -49	seventy six.six-152	23-a hundred forty five	thirty-160	4425-4485
ERF-297-V	650-980	-nine.eight- -forty nine	eighty four.three-166.8	26-a hundred and sixty	30-180	5000-4980
ERF-300-V	650-980	-9.eight- -49	ninety seven-192	29-178	37-two hundred	5000-4980
ERF-350-V	650-980	-nine.8- -forty nine	116-225	34-209	forty five-250	5400-5700
ERG-300V	590-730	-nine.8- -forty nine	133-193	38-184	forty five-220	7800-9100
ERG-350V	590-730	-nine.8- -49	163-231	forty three-216	55-250	9500-9470
ERG-400V	590-730	-9.8- -forty nine	199-290	52-269	75-315	9900-10130
ERG-445V	590-730	-9.8- -49	224.eight-326.9	fifty eight-303	75-355	9900-10130
ERG-450V	590-730	-9.8- -49	255-365	sixty four-335	75-four hundred	11230-11300
ERG-500V	590-730	-nine.eight- -forty nine	314-452	seventy eight-412	132-450	13630-13850
ERF-245W	650-980	-13.three- -fifty three.three	53.five-one zero one	21.five-102	30-a hundred and ten	3630-3360
ERF-250W	650-980	-13.3- -fifty three.three	sixty nine-127	26.five-127	thirty-160	3985-4115
ERF-290W	650-980	-thirteen.three- -53.three	82.6-a hundred and fifty	thirty.five-149	37-185	4340-4580
ERF-295W	650-980	-thirteen.3- -53.3	87-158	32-158	37-185	4440-4580
ERF-297W	650-980	-thirteen.three- -53.three	95-174	36-174	forty five-200	5230-5130
ERF-300W	650-980	-thirteen.three- -fifty three.three	109-195	40-193	55-220	5230-5130
ERF-350W	650-980	-13.3- -53.three	129-230	50-230	seventy five-250	5840-5670
ERG-300W	590-730	-thirteen.three- -fifty three.3	142-197	52-201	75-220	9100-9000
ERF-350W	590-730	-13.3- -53.three	168-234.4	fifty nine-235.five	75-280	9500-9600
ERG-400W	590-730	-13.three- -53.three	220-276.six	71-292	90-315	9900-10130
ERG-445W	590-730	-thirteen.3- -fifty three.3	244-294.6	eighty two-331	90-400	11230-11300
ERG450W	590-730	-thirteen.three- -53.three	275-368.5	91-366	a hundred and ten-four hundred	11230-11300
ETRF-250 (240,250)	650-980	ninety eight-196	64.eight-112	a hundred thirty five-355	one hundred sixty-400	8700-8600
ETRF-295 (245,295)	650-980	98-196	80.8-139	167-439	185-five hundred	9200-9100
ETRF-three hundred (245,295)	650-980	ninety eight-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-four hundred (300,400)	590-740	ninety eight-176.four	205-273	380-773	450-900	21350-24200
ETRG-450 (350,450)	590-740	98-176.four	263-428	476-955	560-a thousand	24200-27600
ETRF-250W (240,250)	650-980	-fifty three.three–eighty	seventy two-121	seventy five.six-121	90-160	6100-6470
ETRF-295W (245/295)	650-980	-fifty three.three–eighty	93.8-154	ninety nine.5-186	a hundred and ten-220	7000-6400
ETRF-300W (2505/300)	650-980	-53.three–80	116-189	115-220	132-250	7750-7760
EL81WD	580-980	nine.8-fifty eight.8	fifty four.two-a hundred thirty	eighteen-151	45-185	3595
EL82WDB	580-980	9.8-fifty eight.8	seventy two.eight-161	22-191	45-220	3860
EL83WDA	580-980	nine.8-58.nine	one hundred and one-213	28.5-202	45-220	4300
EL84WDA	580-980	9.8-fifty eight.eight	129-267	35.4-252	forty five-280	4720
EL93WDA	580-730	9.8-49	230-329	56.four-311	seventy five-355	7765
EL94WDA	580-730	9.8-49	263-373	sixty four-353	seventy five-400	8130
EL95WDA	490-580	9.8-fifty eight.8	308-434	eighty one.four-414	90-450	11500
EL96WDA	580	fifty eight.eight	381	497	560	11500
E397WN	one thousand-1650	forty	5-9
E408WN	870-1650	forty	10-22
E517WN	980-1580	40	20-30
E520WN	930-1550	40	24-forty five
E607WN	750-1250	forty	forty five-seventy six
E610WN	750-1250	40	seventy five-130

Spare parts and construction of our roots blower:

Package of our Roots Blower

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

Roots blower pack strategy identical as iron circumstance, just modify to Fumigation Totally free Plywood Situation

Our manufacturing facility is a professional company of Roots blowers which has above 20 years’ experience in machinery
manufacturing. It is located in Xihu (West Lake) Dis. East Industrial Park, fifty kilometers to the east of Shan EPT provincial
funds— HangZhou. Our firm also has handy visitors 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 major solution of our organization is ESR -sort Roots Blower. The roots
vacuum pump is a new variety of higher-performance roots blower, which is created independently primarily based on the
domestic and international superior systems. A number of patented technologies have been adopted on Roots
Blower, and therefore we have produced considerable results in energy conservation and noise reduction, etc.. So far, our
company has invested far more than 30,000,000 RMB to introduce such superior skilled gear as
horizontal machining middle, vertical machining centre, two-way CNC floor planer, CNC lathe, CNC milling
device, CNC planer, airplane grinder, cylindrical grinding machine, and a few coordinates tests machine.
In addition to, we have taken numerous steps to standardize the procedure flow this sort of as operating and cooperating
with a lot of scientific research units, colleges and universities at residence and overseas. We also continuously try out to
take in and enhance the domestic innovative creation technologies, so as to encourage the upgrading and
optimization of the solution and make the item high quality get to the advanced amount at home and abroad.
ESR -sort Roots Blower contains numerous series these kinds of as A few-leaves Type, Two-leaves Kind and Centrifugal
Variety,which can be even more divided to hundreds of versions. The products are widely employed in sewage remedy,
pneumatic conveying,vacuum packaging, aquaculture, food processing, EPT electricity, petrochemical, cement,
mining and other industries. Our merchandise have this kind of rewards as reduced noise, vitality saving, stable quality,
and lengthy provider lifestyle, and many others.. With the product sales outlets throughout the domestic funds cities, our products promote effectively all
above the region, and have been exported to North The usa,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other international locations. Possessing got the ISO9001 Worldwide Good quality Program Certification, we have
recognized and improved the good quality assurance of the products planning, manufacturing, and set up.
From the approach of layout, investigation and development to the finished goods, we have acquired the total
method controlled independently, as a result providing the total foundation and dependability guarantee for the products balance
and sturdiness. Possessing a perfect sales community and right after-sales services, we give our clients with higher-
quality and much more successful services.All employees of our organization sincerely welcome the broad masses of friends to
information, and negotiate business with us.

Our Roots Blower Workshop

         Doosn Horzitonal Device Middle

The Application of the Roots Blower

Routine maintenance and inspection
(1) Examine all fasteners and finding pins circumstances no matter whether they are loosening.
(two) Constantly examine regardless of whether the leakage phenomenon of the human body.
(three) Pay interest to lubrication, volume of grease and noises when operating,
determine regardless of whether it functions below the essential problems.
(4) Lubricant & grease: The lubricant is for medium load industrial equipment oil
(quality 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash position ≥ 200ºC)
The grease is butter (artificial lithium grease penetration 220-250, fall point ≥
190ºC). Substitute the lubricant and grease after initial two hundred hrs operating, and exchange
once again right after a moth operating. Afterwards, change the lubricant and grease according to the
environment and lubricant (grease) high quality propose a suitable EPT for three
months.
(five) Constantly check out the inlet air filter, cleanse or substitute the filter in time.
(six) Blower overload sometimes not immediately exhibited, so pay out interest to
the consumption and exhaust stress, bearing temperature and the present boost trends
of motor to figure out whether or not the blower functions usually
(7) Before disassembling the blower, the assembling relation and dimensions
need to be recorded or calculated, make marks on elements to guarantee the authentic
needs following assembling.
(8) When freshly machine or overhaul, the oil tank need to be cleaned just before use
and propose substitute all grease following eight several hours operating.

Widespread failure reason and troubleshooting

No	Failure	Possible motives	Elimination techniques
one	Friction amongst the impeller	(1) Impurities on the impeller, resulting in the hole is too small (two) Gear put on, resulting in a large backlash (3) The equipment is not well fastened, can not keep the impeller synchronization (4) Bearing dress in ensuing in clearance growing.	(1) Remove filth and verify whether or not there is injury elements (2) Modify the equipment gap, replace the gears if the gear backlash is increased than the regular 30% to fifty% (3)Re-assemble the gears, preserve the taper contact area is to seventy five% (four)Replace the bearing
2	Collision amongst impeller and wall, the impeller best and casing	(one) Installation gap is not correct (2) running pressure is also substantial, exceeding the specified benefit (three) Functioning temperature is also substantial (four) Casing or foundation deformation, positioning enthusiast failure (five) Bearing axial place is not very good	(1) Modify the hole (two) Recognize causes of overloading, reduced the strain to the specified price (3) Examine the installation accuracy and minimize the pipe rigidity (4) Examine and restore bearings, and to make certain the clearance (five)Relocation
3	Temperature way too substantial	(one) Oil in tank is also considerably, way too thick or too filthy (two) Filter or silencer is blocked (three)The strain is larger than the specified benefit (four)Excessive dress in of the impeller, huge hole (5)Poor ventilation, indoor temperature is large, ensuing in inlet air’s higher temperature (six) The rotating velocity is also minimal,consequence in the belt slipping.	(1)Minimize the oil stage or depend on oil (2)Get rid of of blocking objects (three)Minimizing the strain through the blower (4)Repair its clearance (5)Open vents to reduce area temperature (6) Improve speed to prevent the belt slipping.
4	Inadequate flow	(1) The inlet filter is blocked (2) Impeller wear and the gap will increase way too significantly (3) Belt slipping (4) Huge imports strain reduction (five) Pipeline ventilation leakage	(one) Thoroughly clean the filter dust and obstruction (2) Mend the gap (3)Tighten the belt and increase the number of belts (four)Alter the inlet force to the specified benefit (five) Check and restore the pipeline
five	Oil leaking or oil leaking into the enclosure	(1)Substantial tank situation cause leakage from the discharge port (2) Seal put on, resulting in shaft oil spills (3) The strain is larger than the specified price	(one)Minimize the oil level (two)Exchange the seals (three)Very clear the air vents, 2mm diameter faucet is fastened in the center chamber, open the faucet underneath the wall
6	Irregular vibration and sounds	(1)Bearing clearance exceeds the specified worth or bearing use (two) The equipment backlash is way too big, not in a limited fixed (3) The international objects and dust brought on by the impeller and the impeller, the impeller and the housing collision (four) the impeller shaft deformation caused the collision induced by overload, (five) Friction between the impeller and the inlet housing induced by overheating (6) Unbalance of the impeller caused by fouling or foreign entire body (seven) Anchor bolts or other fasteners are loosened	(1)Exchange bearings or bearing seat (2)Reassemble equipment and make sure backlash (3)Cleansing blower, check out the situation is damaged (4)Check the again stress, verify the wheel and modify gap (five)Verify the filter and again strain, improve the hole between the impeller inlet and the casing (6)Clean the impeller and the casing, to guarantee that the impeller clearance work (7) Tighten the anchor bolts and leveling the foundation.
7	Motor overload	(one)When compared with the essential force, the strain variation is massive that the back strain or the inlet force is large (2) In comparison with the gear demands, blower stream is way too large, so its stress raises (3)Inlet filter is blocked, or outlet pipe is obstructed or blocked (four) Collusion or friction (trapped) rotating components (five) The oil level is way too large (six) Slender V-belt is overheat, vibration is way too massive, or pulley is way too little	(one) Reduce the force to the specified price (2) Exhaust the surplus gas into the atmosphere or decrease the blower speed (3) Take away the obstructions (four)Quickly shut down, verify the cause (five) Modify the oil to the appropriate amount (6) Check the belt stress, and changed it with massive diameter pulley.

Our Support

1. Pre market service                                                                              2. Right after market service                                          
a. advocate the appropriate model                                             c. on the web technological assist,                                                                                   
b. manufacturing unit tour                                                                              d. total existence spare areas and techinical assistance

Gurantee

12 months gurantee for our roots blowers
 

/ The use of first equipment manufacturer’s (OEM) component figures or emblems , e.g. CASE® and John Deere® are for reference purposes only and for indicating merchandise use and compatibility. Our business and the listed EPT parts contained herein are not sponsored, approved, or produced by the OEM. /