What after-sales support is provided?

We provide technical guidance for installation, fast spare parts supply, and overseas service support through our network of local repair partners.

What are the main applications for this Roots Blower?

It is widely used in wastewater treatment aeration, aquaculture, pneumatic conveying, cement plants, chemical industry, and food & beverage fermentation.

What is the minimum order quantity?

The minimum order quantity is 1 set, allowing for flexible purchasing for various project scales.

Variable-Speed Negative Pressure Air Pump for Grain Aeration

Name: Variable-Speed Negative Pressure Air Pump for Grain Aeration
Brand: Shandong Zhaner Machinery Co., Ltd.
SKU: 2136564512

Shandong, ChinaShandong Zhaner Machinery Co., Ltd.

US$1,000.00-1,200.00

1 Piece

Sample price:US$200.00/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel

Usage

for Manufacture

Model NO.

WSR100

Flow Direction

Axial Flow

Pressure

High Pressure

Certification

ISO

Dimension

0.54cbm

Power

15-90kw

Capacity

2.34m3/Min-6.04m3/Min

Rpm

1100-1950

Certificate

ISO9001

Working Temperture

20-200°C

Hscode

8414599040

Voltage

220V, 380V, 400V, 415V

Noise

<85dba

OEM

Yes

Phase

3 Phase

Model

Wsr100

Frequency

50 Hz

Bearing

NSK/Customized

Leadtime

5-7 Days

Transport Package

Wooden Box

Specification

175kg

Trademark

WSR

Origin

China

HS Code

84145990

Key features

Three-Lobe Rotor Design: Reduces pulsation and vibration for quieter, more efficient, and longer-lasting operation.

Oil-Free Air Output: No lubrication required in the air chamber, ensuring clean air for sensitive applications.

High Mechanical Efficiency: Precision CNC machining and dynamic balancing ensure stable performance and high volumetric efficiency.

Continuous Duty Operation: Designed for 24/7 industrial use with robust bearings and reinforced housing.

Low Noise & Vibration: Optimized rotor geometry minimizes resonance, suitable for noise-sensitive environments.

Customizable Parameters: Power, capacity, RPM, and voltage can be customized to meet specific project requirements.

ISO 9001 Certified: Manufactured under strict quality management systems with 100% factory testing before shipment.

Fast Standard Delivery: Typical lead time of 5-7 working days for standard models, ensuring quick project turnaround.

Company profile

High Repeat Buyers ChoiceRaw-Materials Traceability100% Finished Products InspectionManagement Certification

Shandong Zhaner Machinery Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 6 years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤0.74h

AI-Powered supplier vetting

SummaryThe supplier is a combined company focused on blower, environmental-protection equipment, and gas or liquid separation and purification equipment, with related manufacturing, repair, and parts-processing activities. It demonstrates broad customization, ODM and OEM services, recent product development, documented R&D processes, CAD capability, and 20 R&D patents. Production data shows annual output for four blower product categories, while lead times are stated as within 15 working days in both peak and off-season periods. Overseas services include installation, debugging, repair, maintenance, and training, with Indonesia identified as an overseas service market. The supplier reports some brand OEM experience but no Fortune 500 cooperation. Certification details are insufficient, and its supplier-service assessment process lacks written procedures or followed records. Financial information only identifies years 2021–2023, without sufficient evidence to assess financial credibility.

Supplier typeThe supplier is identified as a combined company rather than an offshore company. Its stated scope covers fan and blower manufacturing and sales, environmental-protection equipment, gas compression machinery, liquid separation and purification equipment, general and special equipment manufacturing and repair, and mechanical parts processing and sales.

After-Sales capabilityThe supplier offers overseas debugging, repair, maintenance, training, and equipment installation, and identifies Indonesia as an overseas service market. However, its service-capability assessment has no written procedures or followed records, and only some approved-supplier names were provided, indicating service offerings are evidenced but service governance is incompletely documented.

R&D capabilityThe supplier reports new products during the past year, ODM services, two R&D engineers, CAD capability, 20 R&D patents, and documented design-input, output, review, verification, and validation records available for audit. It also reports no available SDK, which limits the evidenced software-development capability, but the overall product R&D evidence supports a positive assessment.

Production capacityReported annual output includes 10,000 rotary vane blowers, 2,000 air-bearing turbo blowers, 500 magnetic-bearing turbo blowers, and 10,000 Roots blowers. The supplier also states lead times within 15 working days in both peak and off-season periods and has uniformly followed finished-product inspection instructions, providing explicit evidence of production capacity and operational control.

Customization capabilityThe supplier explicitly offers customization from samples, full customization, customization from designs, flexible customization, and minor customization. It also provides ODM services, indicating broad product-design and adaptation support.

Product Q&A

Q:What is the warranty period for this blower?

We offer a 24-month warranty on all of our blowers, covering mechanical defects.

Q:What is the typical lead time for delivery?

The typical lead time for standard models is 5-7 working days. For customized configurations, please contact us for specific timelines.

Q:Can the blower be customized for specific applications?

Yes, we offer customization options for power, capacity, RPM, voltage, and dimensions to suit your specific industrial needs.

Q:What types of bearings are used in this product?

We use NSK bearings or customized options, ensuring durability and low maintenance for continuous operation.

Q:Is the air output oil-free?

Yes, the three-lobe design ensures no internal contact between rotors, eliminating the need for lubrication in the air chamber and providing clean, oil-free air.