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Factory ShanGu RSR50 three lobe roots blower from Shandong MingTian Machinery.
DN50 small roots rotary blower, 0.75-7.5kw, low noise, oil-free air.
Widely used in aquaculture, wastewater treatment.
WhatsApp:+8618766117068 sales @ mingtianblower.com
Brand: ShanGu (China Famous Trademark)
Manufacturer: Shandong MingTian Machinery Group Joint Stock Co., Ltd
Official Website: www.mingtianblower.com
Sales Email: sales @ mingtianblower.com
WhatsApp Contact: +8618766117068 +8613791125026
Factory Address:Fenghuangshan Industrial Park, Puji Subdistrict, Zhangqiu District, Jinan City, China
Tel: +86 0531-83828569 | After-sales Hotline: 0531-83833832
1. MingTian Group Brand Introduction (ShanGu Series Roots Blower)
Shandong MingTian Machinery Group founded in 2007, national high-tech enterprise, national specialized "Little Giant" enterprise, member of China General Machinery Fan Association. Registered trademark "ShanGu" certified as Shandong Famous Trademark. Two production workshops covering over 70 acres, equipped with full CNC machining centers, 3-coordinate measuring machines, dynamic balancing equipment. R&D team: 1 professor-level senior engineer, 4 doctors, 10 masters, long-term technical cooperation with Shandong University, Jinan University, Shandong University of Technology. All ShanGu series roots blowers adopt CAD/CAPP design, CNC precision processing, imported spiral silencer structure, high precision hard tooth surface gears, fully dynamic balanced rotors. Output air 100% oil-free, low vibration, ultra-low noise, compact structure. Full range includes RSR/MJSR/MTRF/MTRG/HRE/HRG/HRZ roots blower & vacuum pump series, motor power range 0.75-1120kW.
2. ShanGu RSR50 Roots Blower Series Overview
Model Definition
RSR50 = RSR three-lobe roots blower, DN50 inlet & outlet flange bore (50mm nominal diameter), smallest standard model of ShanGu RSR belt & coupling dual drive series. Two installation types available: Belt Drive / Direct Coupling Drive.
Core Product Advantages of ShanGu RSR50 Roots Blower
Advanced domestic & foreign roots blower technology absorbed, independent R&D, full digital design
All rotor complete CNC processing + full dynamic balance test, almost zero vibration during operation
Import spiral noise reduction shell + high precision hard tooth gear, running noise far lower than same industry small blower
Compact, small volume, light weight, beautiful overall outline
Clean delivery air without oil, dust, no pollution to conveying medium
Full standardized main body + standard spare parts, mass production system, fast delivery
Wide speed range (1240~3000r/min), matched motor 0.75~5.5kW
Pressure range: 9.8kPa ~ 78.4kPa, stable airflow under variable pressure
Complete supporting accessories: air filter, inlet/outlet silencer, safety valve, pressure gauge, flexible joint, check valve, base frame
3. RSR50 Roots Blower Technical Performance Parameters
Basic Spec Table
Item ShanGu RSR50 Parameter
Model RSR50
Bore Diameter DN50 (50mm)
Rotation Speed Range 1240r/min ~ 3000r/min
Theoretical Air Flow Qth 1.82 ~ 4.4 m³/min
Actual Inlet Flow Qs 0.64 ~ 3.14 m³/min
Differential Pressure Range 9.8kPa ~ 78.4kPa
Matched Motor Power Po 0.75kW / 1.1kW / 1.5kW / 2.2kW / 3kW / 4kW / 5.5kW
Shaft Power La 0.39 ~ 3.47kW
Cooling Mode Air cooling standard; water cooling optional
Lubrication Requirement Drive side oil tank 0.35L, Driven side oil tank 0.8L, grease filling 10~15g
Cooling Water Flow (Water-cooled) 5~8 L/min, cooling water temp <25℃, inlet pressure 196-294kPa(2–3 kgf/cm²)
Standard Rotor Type Three-lobe precision cast rotor
Transmission Type Belt pulley drive / Elastic coupling direct drive
4. RSR50 Roots Blower Structure Drawing & Overall Dimension
ShanGu RSR Series Roots Blower Outline Drawing (Belt Drive)
Model / Mark Bore A B C D Ed Es F G H J
RSR50 50A 50A 255 165 120 895 238 278 201 600 410 100
Model / Mark Bore L M Nd Ns P Q n*Φl R S Weight (kg)
RSR50 50A 50A / 370 148 188 15 80 4*Φ13 500 765 130
Note : Ed, Nd = Single Oil Tank Type; Es, Ns = Double Oil Tank Type. Weight does not include the motor.
ShanGu RSR Series Roots Blower Outline Drawing (Coupling Drive)
Model / Mark Bore A B C D E F G H J
RSR50 50A 50A 700 201 120 900 165 135 660 500 80
Model / Mark Bore K L M N O P Q R n*Φl Weight (kg)
RSR50 50A 50A / / 260 230 160 15 80 60 4-φ18 130
Note: The weight doesn't include the motor weight.
ShanGu RSR50 Standard Complete Piping Layout Diagram
1.Air Filter, 2. Silencer, 3. Roots blower, 4. Safety Valve, 5. Pressure Gauge, 6. Flexible Connector, 7. Empty Valve, 8. Empty Silencer, 9. Tee Joint, 10. Check Valve, 11. Connecting Pipe, 12. Gate Valve
Note: Standard Supply Scope does not include Empty Tee Joint, Empty Silencer, Valves and Connecting Pipe parts.
5. RSR50 Roots Blower Parts Material List
No.Name Material Qty
1 Oil Plug A3 Steel 2
2 Gear Casing HT250 Grey Iron 1
3 Lock Nut A3 Steel 4
4 Washer A3 Steel 4
5 Oil Splash A3 Steel 2
6 Gear 20CrMnTi 2
7 Bearing SUJ2 4
8 V-ring Seal Nitrile Rubber 4
9 Gear Side Wall Plate HT250 Grey Iron 1
10 Drive Shaft 45# Steel 1
No.Name Material Qty
11 Driven Shaft 45# Steel 1
12 Rotor HT250 Precision Casting 2
13 Positioning Pin 45# Steel 6
14 Casing HT250 Grey Iron 1
15 Drive Side Wall Plate HT250 Grey Iron 1
16 Drive Side Oil Tank HT250 Grey Iron 1
17 Oil Seal Nitrile Rubber 2
18 Fuel Tank Cap HT250 Grey Iron 1
19 Oil Gauge Organic Glass 2
20 Purge Plug A3 Steel 2
6. Wide Application Scenarios of ShanGu RSR50 Small Roots Blower
Main Usage Fields for RSR50 DN50 Roots Blower
Aquaculture Oxygen Aeration Small fish pond, shrimp pond, indoor aquaculture farm, water oxygen supply, stable low-pressure air supply, oil-free air no harm to aquatic products.
Wastewater Treatment Aeration Small domestic sewage station, printing & dyeing wastewater, electroplating wastewater aeration stirring, activated sludge oxygen supply.
Pneumatic Conveying Small grain transport, powder material feeding, plastic particle conveying, low pressure material delivery.
Food Industry Food vacuum packaging, food processing air supply, raw material stripping.
Electroplating Tank Stirring Electroplating bath mixing, uniform liquid circulation, small workshop electroplating equipment supporting blower.
Small Incinerator & Furnace Air Supply Small casting furnace, laboratory incinerator combustion-support air, low-pressure air combustion.
Printing Industry Paper Feeding Printing machine paper separation, paper conveying air source.
Vacuum Stripping & Small Vacuum Working Match vacuum pipeline for workpiece film stripping, small negative pressure process.
Biogas / Fuel Gas Delivery Clean oil-free air to mix fuel for gas combustion supporting.
Reverse Osmosis Water Filtration Water filter backwashing, small RO equipment aeration backwash.
7. Standard Supporting Accessories for ShanGu RSR50 Roots Blower
Inlet Air Filter (ZL type air cleaner)
Inlet Horizontal/Vertical Silencer (XF series)
Outlet Silencer (KM/KMB vertical silencer)
KXT-III Flexible Rubber Joint
Safety Pressure Relief Valve
Pressure Gauge / Vacuum Gauge
Swing Check Valve H74W, Wafer Check Valve H77X
Base Frame & Foundation Bolts
Belt Cover (Belt drive version only)
Gear Lubricant Oil, Grease for Bearings
8. RFQ Inquiry Form Section (Direct Copy for Customer Fill)
Get RSR50 Roots Blower Quotation - Contact MingTian ShanGu Factory
Fill your demand information below, we will reply quotation within 24 hours via WhatsApp/Email:
Required Model: □ RSR50 Belt Drive □ RSR50 Coupling Drive
Required Air Flow (m³/min): ______
Required Pressure (kPa): ______
Matched Motor Power (kW): ______
Power Voltage (380V/415V/custom) & Frequency (50Hz/60Hz/custom): ______
Application Industry: Aquaculture / Wastewater / Pneumatic Conveying / Other:______
Required Accessories: Full set / Blower main unit only
Delivery Destination Country & Port: ______
Contact WhatsApp: ______
Contact Email: ______
Our sales team: WhatsApp +8618766117068 | sales @ mingtianblower.com
9. Contact Us - MingTian Machinery ShanGu Brand
Company Full Name: SHANDONG MINGTIAN MACHINERY GROUP JOINT STOCK CO., LTD
Registered Brand: ShanGu Official
Website: https://www.mingtianblower.com
Sales Email: sales @ mingtianblower.com
WhatsApp (24h Online): +86 187 6611 7068
Landline Sales: +86-0531-83828569
After-sales Service Hotline: 0531-83833832
Factory Address :Fenghuangshan Industrial Park,Puji Subdistrict,Zhangqiu District, Jinan City, P.R.China
RSR Series Roots Blower Page
MJSR Medium Roots Blower Page
Large MTRF/MTRG Roots Blower Page
Roots Vacuum Pump Product Page
MVR Steam Compressor Page
Company Profile Page
Factory Workshop Introduction Page
Download Full MingTian ShanGu Catalog (PDF)
10. Important Notice
All technical parameters, dimensions and structure drawings of ShanGu RSR50 roots blower may be updated due to technical improvement without prior notice. All specifications subject to actual delivered product. All products support OEM & ODM customized production according customer drawing & parameter demand.
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