The roots blower listed here carries voltage 220/380/415/440/480/600/660V, power source Electric, documented exactly as the manufacturer publishes it. Made by Shandong Zhaner Machinery Co., Ltd. (1 year on the platform, typical reply ≤1h). For a binding price and lead time, send the volume you need and where it ships to.
Key Features of This Roots Blower
- Model Number: WSR300
- Power Source: Electric
- Rated Voltage: 380 V, 120 V, 110 V, 240 V, 220 V, 440v, 400v
- Voltage: 220/380/415/440/480/600/660V
- Material: Cast Iron
- Blade Material: Cast Iron
Technical Specifications
| Application | Air Blower |
|---|---|
| Power Source | Electric |
| Rated Voltage | 380 V, 120 V, 110 V, 240 V, 220 V, 440v, 400v |
| Electric Current Type | AC |
| Motor Type | AC Motor |
| Speed | 1100rpm |
| Material | Cast Iron |
| Blade Material | Cast Iron |
| Pressure | High Pressure |
| Warranty | 1 Year |
| Customized Support | OEM, ODM, OBM |
| Place Of Origin | Shandong, China |
| Brand Name | WSR |
| Model Number | WSR300 |
| Product Name | Three-Lobe Roots Blower |
| Number Of Stages | Double Stage |
| Type | Positive Displacement Blower |
| Lobe Type | Three Lobe |
| Cooling Type | Air Cooling |
| Drive Type | V Belt Drive |
| Noise Level | 65 to 85 dB(A) |
| Certifications | ISO9001;CE |
| Voltage | 220/380/415/440/480/600/660V |
| Selling Units | Single item |
| Single Volume | 0 cm³ |
| Single Gross Weight | 0.0 kg |
Product Details
ISO9001-certified Low Pressure Electric AC Iron Three-lobe Roots Blower for Industrial Wastewater Treatment
- ISO9001-Certified Quality: Ensures reliability and compliance with international standards.
- Efficient Wastewater Treatment: Suitable for industrial applications requiring high-pressure flow.
- Electric Operation: Low pressure operation ensures safety and energy efficiency.
- Factory with 20 years of experience and comprehensive after-sales service.
ROOTS BLOWER
This is our Roots blower, a positive displacement blower with air flow proportional to rotational speed, ensuring stable and
reliable air delivery. It adopts a three-lobe rotor design, providing smoother operation, lower pulsation, reduced noise and
vibration, and higher mechanical strength compared to two-lobe types. The WSR series features a compact structure, easy
installation, and excellent adaptability for various working conditions.
Structural Composition
* Key components are processed with imported advanced equipment for high precision and consistency.
* Strict quality control is applied at every production stage, with dedicated inspection for every process.
* We are committed to high-quality standards, minimizing rework and ensuring every unit delivers stable and reliable performance.
* Strict quality control is applied at every production stage, with dedicated inspection for every process.
* We are committed to high-quality standards, minimizing rework and ensuring every unit delivers stable and reliable performance.
Product Details: Great Wall Pressure Gauge
We use Great Wall brand pressure gauges, which provide higher precision, stronger durability, and more stable performance than common gauges in the market, ensuring safer and more reliable blower operation.
Product Details: Higher-quality pulley
Easy installation, precise positioning, higher efficiency, and full compatibility with existing motors for flexible replacement.
✔ QD type：✔ easy install ✔ accurate ✔ efficient ✔recommended
❌ B type：less precise, lower installation convenience
✔ QD type：✔ easy install ✔ accurate ✔ efficient ✔recommended
❌ B type：less precise, lower installation convenience
Bearing Comparison: Genuine NSK
✔ We use genuine NSK bearings for stable and long-lasting operation, ensuring high precision, low noise, and excellent wear resistance.
❌ Counterfeit bearings may cause instability, higher wear, and shorter service life.
❌ Counterfeit bearings may cause instability, higher wear, and shorter service life.
Wall panel comparison: High-quality Laiwu Steel
✔ We use high-quality Laiwu Steel wall panels, offering strong durability, corrosion resistance, and long service life for stable equipment protection.
❌ Low-quality steel panels may rust easily, deform under pressure, and reduce overall equipment reliability.
❌ Low-quality steel panels may rust easily, deform under pressure, and reduce overall equipment reliability.
Application Scenarios
Roots blowers are widely used in wastewater treatment aeration systems, RAS (recirculating aquaculture systems) for oxygenation in
fish and shrimp farming, pneumatic conveying systems for transporting powders and granular materials, industrial aeration
processes for mixing and biological treatment, and in cement and chemical industries for air supply, material handling, and
process gas boosting applications.
✔ Roots blowers provide a continuous and stable air supply in **sewage treatment aeration systems**, increasing dissolved oxygen levels in the water and promoting the decomposition of organic matter by microorganisms, thereby improving sewage treatment efficiency and effluent quality.
✔ In the **RAS recirculating aquaculture system**, Roots blowers are used to provide continuous and stable oxygen supply, maintain dissolved oxygen balance in high-density aquaculture water, ensure efficient water circulation and treatment, and promote healthy fish growth.
✔ Roots blowers are used in **negative pressure (vacuum) applications** to pump gases or materials, such as in vacuum packaging, vacuum feeding, filtration and dehydration, and centralized dust removal systems, to achieve stable vacuum levels and efficient continuous pumping.
✔ Roots blowers provide a stable air source in **pneumatic conveying/powder conveying systems**, enabling continuous, uniform, and long-distance conveying of powder materials through positive pressure airflow, improving conveying efficiency and reducing the risk of blockage.
标题
20+ Years Manufacturing Experience
Global Customer Base Serving 15,000+ customers in 60+ countries worldwide.
Monthly output reaches 3,000+ units, ensuring fast and stable supply.
ISO9001 certified, located near Qingdao Port for efficient global shipping.
Global Customer Base Serving 15,000+ customers in 60+ countries worldwide.
Monthly output reaches 3,000+ units, ensuring fast and stable supply.
ISO9001 certified, located near Qingdao Port for efficient global shipping.
We implement full-process quality inspection with traceable production records for each blower, and each unit is tested before delivery to ensure stable and reliable performance.
Full QC tracking, traceable production,
100% pre-delivery testing ensure stable and reliable quality.
We use imported machining equipment and enforce strict production standards, requiring precise and careful operation in every process.
Key components achieve machining accuracy of 0.02–0.03 mm, ensuring stable quality, high precision, and reliable product performance.
Our factory is located at No. 93 Jianqiao Road, Zhucheng, Shandong Province.
covering 700 mu with 100 employees
4 production lines.
We achieve a stable monthly capacity of 3,000 units, ensuring reliable supply and consistent product quality through strictquality control.
We maintain around 200+ units in stock, ensuring fast delivery and stable supply. This allows ：
1. quick response to customer orders
2. short lead time
3. reliable support for urgent project requirements
4. improving overall procurement efficiency.
This is our rotary blower production area,
where 3 QC inspectors and skilled technicians ensure strict inspection and stable production. Each unit is carefully assembled, tested, and monitored throughout the process to guarantee reliable performance and reduced rework.
High flexibility with customization services:
We tailor products to unique preferences, including specifying preferred motor brands.
We offer comprehensive OEM/ODM customization services for Roots blowers, including color options (red, silver, green, blue, and full RAL range), OEM branding (logo, nameplate, packaging), and ODM design optimization based on specific operating conditions such as pressure, airflow, and application requirements (wastewater treatment, aquaculture, etc.). All products are manufactured under ISO 9001 standards, ensuring stable performance, reliable quality, and export-grade durability.
Shandong Zhan’er Machinery Co., Ltd.,
a professional Roots blower manufacturer in China, participated in IE expo China 2026 at the Shanghai New International Expo Centre. The company presented high-efficiency solutions for wastewater treatment, aeration systems, aquaculture oxygen supply, and industrial air handling applications
Zhan’er Machinery has participated in the exhibition for multiple consecutive years, strengthening its global brand presence.
Export packaging
Custom export-grade wooden crate
1.5 cm thickness, specially designed for secure packaging, providing strong protection against impact, vibration, and long-distance transportation risks to ensure safe delivery of goods.
Export shipping
We focus on overseas markets and have exported to over 70 countries, building a vast and loyal global customer base.
FAQs
What warranty do you offer?
We offer a 12-month warranty on all of our blowers.
What is the lead time for your blowers?
The typical lead time for our blowers is 5 to 7 days. We also maintain stock of regular models, which allows us to ship immediately for those units.
What is the service life of a Roots Blower?
Typical lifespan of a Roots type air blower: Bearings: 2 to 3 years
Whole machine: 8 to 15 years
Can a Roots Blower run 24/7 continuously?
Yes. A Roots blower for wastewater treatment is designed for continuous operation.
Can Roots Blower be used with VFD?
Yes. A Variable Frequency Drive (VFD) can be used to: Adjust air flow Save energy consumption Improve system control flexibility
Ordering and Pricing
- Minimum order quantity: 1 set
- Ships from: China
- Customization: OEM and ODM accepted on qualifying volumes.
Frequently Asked Questions
What is the minimum order quantity for this roots blower?
The standard minimum order quantity is 1 set. Trial orders can usually be arranged for buyers evaluating the product before a full production run.
What warranty is provided?
The manufacturer provides a 1 Year warranty. Spare parts and technical support remain available after the warranty period.
Which certifications does this roots blower carry?
It is supplied with ISO9001;CE documentation, which covers the requirements of most import markets. Additional test reports can be issued on request.
Can the roots blower be supplied for my local voltage?
The standard configuration is 380 V, 120 V, 110 V, 240 V, 220 V, 440v, 400v. Alternative voltage and frequency builds are available when specified at the time of order.
Do you accept OEM or custom branding?
Yes. Custom logo, colour, packaging and specification changes are accepted on qualifying order volumes. Send your artwork and technical requirements with your enquiry.
How long does production and delivery take?
In-stock configurations typically ship within 7–15 days. Customised or large-volume orders are usually produced in 25–35 days, confirmed on order.
About the Manufacturer
This product is produced by Shandong Zhaner Machinery Co., Ltd., based in China. The company 1 years as a verified Alibaba.com supplier, operates its own manufacturing. Browse the full Shandong Zhaner Machinery Co., Ltd. range on HVACR Nexus.
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