Belt-Drive Swing-Out Fan for Oil Mist Exhaust

When I first talk to a customer about an Oil Mist Exhaust Fan, I usually do not start by asking, “What motor power do you need?” I ask a few more basic questions first: What kind of machine are you running? Where is the oil mist coming from? How much air needs to be removed? How long is the duct? Is there a filter or oil mist collector in the system?

These questions may sound simple, but they determine whether an Industrial Exhaust Fan will actually work well after installation.

Our Belt-Drive Swing-Out Fan for Oil Mist Exhaust is designed for industrial environments where oil mist, contaminated air, fumes, and process exhaust need to be collected and moved through a ventilation or filtration system. The fan uses a belt-drive transmission structure and a swing-out design that provides more convenient access for inspection and cleaning.

At Zhejiang Shangyang Industrial Fan Co., Ltd., we have been working with industrial fan technology for around 20 years. Our sales company is located in Shanghai, China, and our manufacturing facility is located at No. 6-8, Bifa Road, Xinbi Subdistrict, Jinyun County, Lishui City, Zhejiang Province.

Our factory manufactures standard and non-standard centrifugal fans, High-Temperature Fans, induced draft fans, axial fans, Low-Noise Centrifugal Fans, High-Pressure Fans, stainless steel centrifugal fans, hot air circulating fans, mixing fans, explosion-proof Centrifugal Fans, and other industrial ventilation equipment.

In my experience, the biggest mistake when buying an oil mist exhaust fan is choosing equipment only from a catalogue name. The fan needs to match the actual working conditions. That is why this page focuses not only on what the fan is, but also on how I would select, use, maintain, and evaluate this type of equipment in a real factory.

1. What Is a Belt-Drive Swing-Out Fan for Oil Mist Exhaust?

A Belt-Drive Swing-Out Fan for Oil Mist Exhaust is an industrial exhaust fan designed to move oil mist and contaminated air from machining and metalworking processes into an exhaust, filtration, or oil mist treatment system.

The fan has two important structural features.

The first is the belt-drive transmission. Instead of connecting the motor directly to the fan shaft, the motor transfers power through belts and pulleys. This gives us more flexibility when matching the motor speed and fan shaft speed. By selecting an appropriate pulley ratio, the fan can be configured for different operating requirements.

The second is the swing-out structure. This design provides easier access to the internal fan area for inspection, cleaning, and maintenance. This is especially useful in oil mist applications because oily deposits can build up over time, depending on the process and filtration arrangement.

I would not describe the fan as an oil mist treatment device by itself. The fan is mainly the airflow equipment in the complete system. The actual treatment of oil mist may involve a dedicated oil mist collector, filter, separator, electrostatic equipment, or another treatment method.

A typical system may look like this:

CNC machine → collection hood or machine enclosure → exhaust duct → oil mist collector or filter → Belt-Drive Swing-Out Fan → discharge duct

The actual position of the fan depends on the system design. In some applications, the fan is arranged downstream of the treatment equipment. In other systems, a different configuration may be appropriate. I always recommend reviewing the complete airflow path before deciding where the fan should be installed.

Why Oil Mist Exhaust Is Different From Ordinary Ventilation

Ordinary workshop ventilation mainly moves relatively clean air. Oil mist exhaust is more complicated because the air may contain fine oil droplets, coolant mist, metal particles, moisture, or other contaminants.

These contaminants can gradually settle on equipment and surfaces if they are not captured effectively. That can create cleaning problems and may affect the working environment.

For this reason, source capture is very important. If oil mist is collected close to the machine where it is generated, the exhaust system does not have to chase the mist after it has already spread across the workshop.

The fan then provides the pressure and airflow required to move the captured air through the ductwork and treatment equipment.

Basic Fan Selection Information

Source: Zhejiang Shangyang Industrial Fan Co., Ltd. engineering selection practice. Values and configurations are determined according to actual project conditions and are not fixed product specifications.

2. How the Belt-Drive Oil Mist Exhaust Fan Works

The working principle is easy to understand.

When the motor starts, it rotates the driving pulley. The belt transfers this power to the pulley mounted on the fan shaft. The fan shaft then rotates the impeller.

As the impeller rotates, air enters through the fan inlet. The rotating blades accelerate the air and increase its pressure. The air then moves toward the outlet and into the exhaust system.

In a CNC machining application, the air being moved may contain oil mist generated by cutting or cooling processes. The collection hood or machine enclosure captures the contaminated air. The duct carries it to the filtration or treatment equipment. The fan provides the airflow needed to keep the system moving.

The difficult part is not making air move. The difficult part is making the correct amount of air move against the resistance of the complete system.

Imagine a short duct with one filter. Now compare it with a system that has 30 meters of duct, several elbows, a damper, a high-resistance filter, and a long discharge pipe. Even if both systems need a similar amount of airflow, the required fan pressure may be very different.

This is why I always look at air volume and pressure together.

What Does the Belt Drive Add?

The belt-drive arrangement gives us an additional mechanical transmission stage between the motor and fan shaft. This means the fan shaft speed can be different from the motor speed.

That can be useful when the required fan operating point does not line up perfectly with a standard motor speed.

It also allows the motor and fan shaft to be arranged separately, which can provide more flexibility when designing the overall equipment layout.

However, there is a trade-off. Belts and pulleys are mechanical wear components. They need periodic inspection, and belt tension and pulley alignment should be checked during maintenance.

I do not consider that a disadvantage by itself. It is simply part of choosing a belt-drive fan. The important thing is whether the structure fits the customer's actual application.

Source: Zhejiang Shangyang Industrial Fan Co., Ltd. fan engineering and configuration practice. This is a structural comparison, not a claim that one transmission type is universally better.

3. Main Features I Focus On When Designing an Oil Mist Exhaust System

When customers ask me what makes this type of fan suitable for oil mist exhaust, I normally mention several practical points rather than giving a long list of technical words.

Flexible Belt-Drive Transmission

The belt-drive system allows the motor speed and fan shaft speed to be matched through pulley selection.

This can be useful for customized industrial ventilation projects. If a customer has a specific airflow and pressure requirement, I can consider the fan speed, motor speed, pulley arrangement, and impeller design together.

Of course, the final configuration still needs to be checked against the actual fan performance curve and system resistance.

Swing-Out Maintenance Design

This is one of the features I consider particularly practical for oil mist applications.

Oil mist can leave deposits on internal surfaces. If inspection requires the complete fan to be dismantled, maintenance becomes slow and inconvenient. A swing-out structure provides easier access to the relevant internal area.

That means maintenance staff can inspect the impeller, internal surfaces, and other accessible components more easily.

It does not mean maintenance can be ignored. It simply makes maintenance more manageable.

Stable Airflow

For an oil mist extraction system, stable airflow is more useful than simply having a very large airflow rating.

The fan needs to operate near the required working point. If the airflow is too low, source capture may not work as intended. If the airflow is far higher than necessary, energy use and system noise may increase.

My approach is to first understand the required operating point and then select a suitable fan configuration.

Suitable Material Selection

The air handled by an oil mist exhaust fan is not always the same. Some factories use oil-based cutting fluids. Others use water-soluble coolant. Temperature and chemical characteristics can also vary.

Because of this, material selection should be based on actual working conditions.

Our factory manufactures stainless steel centrifugal fans as well as other industrial fan structures. When a customer has a corrosive or special environment, I recommend providing the gas characteristics before we confirm the material.

Low-Vibration Operation

Industrial fans rotate continuously, so vibration control is important.

Impeller balance, shaft alignment, bearing installation, foundation strength, motor installation, and duct connection can all affect vibration.

In other words, a fan cannot be judged only by the fan itself. The installation system matters too.

Easy Access for Cleaning

Oil mist systems naturally create a maintenance requirement. Depending on the process, oil deposits can collect in ducts, filters, hoods, and fan components.

The swing-out construction is intended to make access easier, which is useful when the operator needs to inspect or clean the internal area.

4. How I Select the Right Oil Mist Exhaust Fan

If a customer sends me only the message, “Please quote a belt-drive oil mist exhaust fan,” I normally need more information before giving a meaningful recommendation.

The first number I want is the required airflow.

The second is the required pressure.

These two values form the basic starting point for fan selection.

After that, I look at temperature, gas characteristics, ductwork, filtration equipment, machine type, operating hours, installation space, motor voltage, noise requirements, and any special safety requirements.

Airflow

Airflow tells us how much air needs to be moved. The required airflow may come from the machine manufacturer's ventilation requirement, the exhaust system design, the enclosure dimensions, or an engineering calculation.

I do not recommend guessing the airflow simply by looking at the machine size.

Pressure

Pressure is equally important.

Every component in the airflow path creates resistance. Duct friction, elbows, filters, collectors, dampers, silencers, hoods, and discharge arrangements can all contribute to pressure loss.

The fan must have enough pressure capability at the required airflow to overcome this resistance.

Temperature

Oil mist exhaust is often associated with normal machining temperatures, but not every industrial process is the same. If the exhaust gas temperature is elevated, the fan material, bearing arrangement, motor position, and other components may need to be reviewed.

Oil Mist Characteristics

I also want to know what type of cutting fluid or oil is involved. The nature of the contaminant affects filtration and material considerations.

Duct Layout

A short, straight duct is very different from a long duct with multiple bends.

If a customer can provide a simple drawing or even a hand sketch showing the machine, duct route, filter, fan and outlet, that can be very helpful.

Operating Hours

A fan running two hours per day and a fan running 24 hours per day are not the same project.

Long operating hours make motor selection, bearing quality, cooling, vibration, inspection and maintenance more important.

Source: Zhejiang Shangyang Industrial Fan Co., Ltd. industrial fan selection experience. These categories describe common engineering considerations rather than fixed performance specifications.

5. Where Can a Belt-Drive Swing-Out Oil Mist Fan Be Used?

The Belt-Drive Swing-Out Fan for Oil Mist Exhaust is mainly suitable for industrial processes where oil mist or contaminated air needs to be collected and exhausted.

CNC Machining

CNC machining is one of the most common applications I would consider.

Turning, milling, drilling, boring and other machining processes may use cutting oil or coolant. High-speed cutting can produce fine droplets that become suspended in the air.

A machine enclosure combined with local exhaust can capture much of this contaminated air close to the source.

Automotive Parts Manufacturing

Automotive component factories often operate many CNC machines and machining centers. When production is continuous, oil mist control becomes a more important part of workshop ventilation.

A centralized oil mist extraction system may be considered when many machines need to be connected, while separate extraction units may be suitable for smaller production areas.

Metalworking

Metalworking workshops may include turning, milling, drilling, grinding and other processes. The exhaust requirement varies from one process to another.

For this reason, I would not use the same fan specification for every metalworking machine. The actual process and contaminant condition should guide the selection.

Precision Machining

Precision machining often involves expensive equipment and controlled production conditions. Oil mist that escapes into the workshop can settle on surrounding equipment and surfaces.

Local exhaust and filtration can help keep the working environment cleaner when the system is correctly designed.

Grinding and Finishing

Grinding and finishing processes can create a mixture of airborne particles, coolant mist, and other contaminants. The correct collection method depends on the exact process.

Centralized Oil Mist Collection

When a factory has many machines, a centralized exhaust system can sometimes be more practical than installing an individual fan for every machine.

However, centralized systems require careful duct balancing. Adding more machines changes the airflow demand and system resistance. The fan therefore needs to be selected for the actual system design rather than simply adding up motor powers.

6. Belt Drive vs Direct Drive: Which One Would I Choose?

Customers often ask me whether a belt-drive fan is better than a direct-drive fan. My answer is always: it depends.

If the project needs a compact structure and the required fan speed matches the motor arrangement well, direct drive can be a practical solution.

If the project benefits from flexible fan speed matching, separate motor positioning, or a particular mechanical arrangement, belt drive may make more sense.

For a belt-drive system, however, I tell customers to accept one basic maintenance requirement: belts need attention.

The belt should be checked for wear. Belt tension should be appropriate. The driving and driven pulleys should remain properly aligned. If the belt becomes loose or damaged, transmission performance can be affected.

That is not difficult maintenance, but it should be included in the factory's maintenance schedule.

Source: Zhejiang Shangyang Industrial Fan Co., Ltd. product engineering comparison based on industrial fan design practice. Actual selection depends on project requirements.

7. How We Manufacture the Belt-Drive Swing-Out Fan

I believe a reliable industrial fan starts with proper engineering rather than simply good-looking fabrication.

Our manufacturing process begins with the working conditions provided by the customer. We review airflow, pressure, temperature, gas characteristics, installation dimensions, motor requirements, transmission requirements and other technical information.

Fan Design

Once the operating conditions are confirmed, our technical team determines the appropriate fan structure.

For customized fans, this may include impeller dimensions, blade arrangement, casing size, inlet and outlet dimensions, shaft configuration, bearing arrangement, motor power and belt-drive system.

Material Preparation

Material selection depends on the application.

For ordinary industrial exhaust, carbon steel may be suitable. For certain corrosive or demanding environments, stainless steel or another suitable material may be considered.

I always recommend selecting materials based on the actual gas and environmental conditions rather than assuming that a more expensive material is automatically necessary.

Impeller Fabrication

The impeller is one of the most important components in a centrifugal fan.

Its diameter, blade geometry, number of blades, angle, width and rotational speed influence the final airflow and pressure performance.

After fabrication, the rotating assembly should be inspected and appropriately balanced. A well-balanced impeller helps reduce unnecessary vibration during operation.

Casing Fabrication

The casing provides the airflow passage around the impeller. Welding accuracy, dimensions, assembly and connection points all matter.

For customized applications, the inlet and outlet dimensions can be discussed according to the customer's duct arrangement and available installation space.

Belt-Drive Assembly

For the belt-drive configuration, the motor base, motor pulley, fan pulley, shaft and belt system need to be assembled correctly.

Pulley alignment is important. Belt tension also needs to be appropriate. Too little tension can lead to slipping, while excessive tension can place additional load on bearings and other components.

Swing-Out Assembly

The swing-out structure is assembled to provide practical access to the internal fan area. The opening direction and available space should be considered before installation.

This is especially important when the fan is installed close to walls, ducts, platforms, or other equipment. Maintenance access should be considered during the layout stage, not after installation.

Inspection Before Delivery

Before delivery, we check the relevant dimensions, assembly condition, rotating components, transmission arrangement and other agreed requirements.

Where applicable, testing and technical documentation can be provided according to the product configuration and order requirements.

8. Why Choose Zhejiang Shangyang Industrial Fan Co., Ltd.?

When I explain our company to an industrial customer, I prefer to talk about what we actually do rather than simply listing slogans.

Zhejiang Shangyang Industrial Fan Co., Ltd. is a national high-tech enterprise and a small- and medium-sized technology enterprise. Our sales company is located in Shanghai, while our factory is located in Jinyun County, Zhejiang Province.

Our fan technology design, manufacturing, and sales teams have around 20 years of experience.

Our product development has been closely connected with coating fans and environmental protection fans. Based on research and development experience from Taiwan, we have continued to improve, refine and optimize our fan products for more than a decade.

This background is useful when a project involves more than ordinary workshop ventilation. We manufacture fans for coating, environmental protection, dust collection, kilns, boilers, thermal energy, printing, chemical processing, food production, cement, separation, medical latex equipment, air-supported membrane systems, and other industrial applications.

Our factory can manufacture both standard and non-standard fan configurations. This is important because many industrial ventilation projects do not perfectly fit a standard catalogue specification.

Relevant Testing and Certifications

We possess multiple national test reports for specialized products and have successively obtained national explosion-proof certification, energy efficiency certification, and other applicable certifications.

I want to make one point very clear: a certification belongs to the applicable product and configuration for which it was issued. When a customer needs an explosion-proof or energy-efficiency-certified product, we confirm the exact model and configuration rather than applying a certificate broadly to unrelated products.

From Standard Fans to Customized Equipment

Some customers already know exactly what they need. They may send us the required airflow, pressure, motor power and installation dimensions.

Other customers only know the problem: “We have 20 CNC machines and too much oil mist in the workshop.”

For the second situation, we need to understand the whole system before recommending a fan.

That may include reviewing the number of machines, machine enclosure, collection points, duct layout, filtration equipment, fan position, discharge arrangement and maintenance requirements.

This is where our engineering experience becomes useful.

9. Production Time, Delivery, Payment and Packaging

Industrial buyers usually care about more than the fan itself. Production time, transportation, packaging, payment and after-sales support can affect the whole project schedule.

Production Cycle

Our typical production cycle is approximately 7–20 working days.

I would not treat this as a fixed delivery promise for every order. The actual production time depends on fan model, airflow, pressure, materials, motor configuration, customization level, order quantity and current production scheduling.

A standard fan can usually move through production more quickly than a large customized fan requiring special materials or structural changes.

Standard Delivery

Depending on the agreed configuration, standard delivery can include the complete fan unit, motor, belt-drive components, and other necessary accessories.

The exact contents should always be confirmed in the quotation or technical agreement.

Payment Terms

Payment terms can be arranged according to the order and project requirements. A common arrangement is a deposit before production, followed by the balance before shipment.

The actual payment schedule is confirmed in the commercial quotation or contract.

Transportation

For domestic orders, road transportation is commonly used.

For overseas projects, sea freight is often suitable for large industrial fans, while other transportation solutions may be considered according to the destination, equipment size, delivery schedule and customer requirements.

Packaging

Packaging is selected according to the size and transportation conditions of the fan.

Depending on the product, we may use protective film, reinforced cartons, wooden frames, or wooden cases.

For large industrial fans, reinforced wooden packaging can provide additional protection during loading, unloading and long-distance transportation.

The purpose is straightforward: protect the fan casing, motor, shaft, pulley system, inlet and outlet components from impact, moisture and unnecessary movement during transportation.

10. Maintenance Advice From My Experience

A good fan can still develop problems if it is not maintained properly. Fortunately, most basic maintenance work is not complicated.

Check the Belt

For a belt-drive fan, belt condition should be checked regularly.

Look for cracking, excessive wear, slipping, abnormal noise, or unusual vibration. Belt tension should also be checked according to the equipment requirements.

Check Pulley Alignment

The motor pulley and fan pulley should remain properly aligned. Misalignment can increase belt wear and vibration.

Check Bearings

Bearings should be inspected for abnormal noise, temperature and vibration. The correct lubrication method and maintenance interval depend on the bearing type and operating conditions.

Inspect the Impeller

If the fan handles oil mist for a long period, deposits may develop on internal surfaces and rotating components.

During scheduled maintenance, the accessible fan interior should be inspected and cleaned when necessary.

Check Vibration

A change in vibration can be an early warning sign.

If a fan that normally runs smoothly suddenly develops unusual vibration, I would not simply keep running it and wait for the problem to disappear. The impeller, bearings, foundation, belt system, fasteners and duct connections should be checked.

Do Not Ignore the Filter

In many oil mist systems, the filter or collector can have a major effect on fan performance.

As the filter becomes loaded, resistance can increase. This can change the system operating point.

Therefore, maintaining the oil mist collector is also part of maintaining the fan system.

11. Frequently Asked Questions About Belt-Drive Swing-Out Fan for Oil Mist Exhaust

Q1: What is the main application of this fan?

The main application is industrial oil mist exhaust and ventilation. It can be used with CNC machines, machining centers, metalworking equipment, automotive parts production lines, and other processes that generate oil mist or contaminated air.

Q2: What does “swing-out” mean?

Swing-out refers to the fan structure that allows the relevant section to open or move away for easier internal inspection and maintenance. The exact opening method depends on the fan model.

Q3: Why use a belt-drive fan instead of a direct-drive fan?

A belt-drive structure can provide more flexibility in fan speed matching and motor arrangement. It is particularly useful for some customized industrial ventilation systems. However, direct drive can also be a good choice in applications where compact structure and simpler transmission are preferred.

Q4: Can this fan be used for CNC machines?

Yes. It can be used as part of a CNC machine oil mist extraction system. The correct fan model should be selected according to the required airflow, system pressure, machine enclosure, ductwork and filtration equipment.

Q5: Can one fan serve several CNC machines?

Yes, a centralized oil mist extraction system can connect multiple machines to one fan. However, the duct system needs proper design and balancing. The total airflow and pressure requirements should be calculated before selecting the fan.

Q6: Can you manufacture a customized oil mist exhaust fan?

Yes. We manufacture both standard and non-standard industrial fans. Depending on the project, we can discuss airflow, pressure, fan dimensions, motor power, material, rotation direction, inlet and outlet dimensions, transmission arrangement and other requirements.

Q7: What information should I provide for a quotation?

I recommend providing the required airflow, pressure, gas temperature, oil mist type, machine information, duct dimensions, duct length, filter or collector information, motor power requirements, electrical supply, installation space and quantity.

Q8: What is the normal production time?

The typical production cycle is approximately 7–20 working days. The actual time depends on the fan configuration, materials, motor, customization and order quantity.

Q9: Does the fan include the oil mist filter?

The fan and oil mist filter are separate equipment unless a complete system is specifically ordered. The delivery contents should be confirmed according to the quotation and technical agreement.

Q10: Can the fan handle corrosive air?

It depends on the actual gas composition and operating environment. We manufacture stainless steel and other industrial fan configurations, but material selection should be based on the customer's actual temperature, humidity and chemical conditions.

Q11: Does the belt need regular replacement?

Yes. A belt-drive fan requires periodic inspection of the belt. Replacement depends on belt condition, operating hours, load and environment. The belt should be replaced when excessive wear, cracking or other damage is found.

Q12: Can you supply explosion-proof configurations?

We manufacture explosion-proof centrifugal fan configurations and have obtained national explosion-proof certification for applicable products. If an explosion-proof fan is required, the hazardous-area classification and actual operating conditions should be provided so that the applicable certified configuration can be confirmed.

Q13: How do you package the fan for export?

Depending on the fan size and transportation method, we can use protective film, reinforced cartons, wooden frames or wooden cases. Large equipment generally requires stronger protection to reduce the risk of impact and moisture during transportation.

Q14: Can you provide technical support for fan selection?

Yes. If the customer provides the basic operating conditions, our technical team can review the required airflow, pressure, fan structure, motor and installation requirements and recommend a suitable configuration.

12. My Final Advice When Choosing an Oil Mist Exhaust Fan

If I had to give one piece of advice to someone buying a Belt-Drive Swing-Out Fan for Oil Mist Exhaust, it would be this: do not choose the fan by motor power alone.

Start with the actual problem.

How much oil mist is being generated? Where is it generated? How many machines need extraction? What airflow is required? What pressure does the system need? What type of filter is being used? How long is the duct? What are the temperature and gas characteristics? How many hours will the fan operate each day?

These questions tell us much more than simply saying, “I need a 5.5 kW fan.”

The belt-drive structure can provide useful flexibility for industrial applications, while the swing-out construction makes inspection and cleaning more convenient. Together, these features make the fan suitable for many oil mist exhaust and industrial ventilation projects.

At Zhejiang Shangyang Industrial Fan Co., Ltd., we have around 20 years of experience in industrial fan design, manufacturing and sales. Our factory produces centrifugal fans, high-pressure fans, high-temperature fans, axial fans, low-noise centrifugal fans, stainless steel centrifugal fans, mixing fans, explosion-proof centrifugal fans and other standard and non-standard industrial fan products.

Our products are used in coating, environmental protection, dust collection, kiln, boiler, thermal energy, printing, chemical, cement, food, separation, medical latex equipment and other industrial fields. We supply customers throughout China and also export industrial fans overseas as supporting equipment.

For a standard application, the selection process can be relatively simple. For a customized oil mist exhaust system, I prefer to spend more time on the technical details before production. It is much easier to solve a selection problem on paper than after several tons of equipment have already been installed in a workshop.

If you are planning an oil mist exhaust project for CNC machining, automotive parts manufacturing, metalworking, precision machining, or another industrial process, send us the basic working conditions. With the required airflow, pressure, temperature, duct information and installation requirements, we can work toward a practical Belt-Drive Swing-Out Fan for Oil Mist Exhaust configuration rather than simply recommending a generic fan.

Primary SEO Keywords: Belt-Drive Swing-Out Fan for Oil Mist Exhaust, belt drive oil mist exhaust fan, swing-out oil mist exhaust fan, industrial oil mist exhaust fan, oil mist extraction fan, CNC oil mist exhaust fan, machining oil mist extraction fan, belt drive industrial exhaust fan, oil mist collection fan, metalworking exhaust fan, CNC machine ventilation fan, industrial oil mist extraction system.

Long-Tail SEO Keywords: Belt-Drive Swing-Out Fan for CNC Oil Mist Exhaust, belt drive oil mist extraction fan for machining, industrial oil mist exhaust fan for CNC machines, swing-out fan for oil mist collection systems, Belt Drive Exhaust Fan for metalworking workshops, oil mist exhaust fan for automotive parts manufacturing, industrial fan for CNC machining oil mist removal, customized belt drive oil mist exhaust fan.

Content and data source note: Company information, product characteristics, production cycle, delivery, packaging and application information in this page are based on the product and company information supplied by Zhejiang Shangyang Industrial Fan Co., Ltd. Comparative tables are engineering-reference comparisons prepared from the stated fan structures and the company's industrial fan design and manufacturing practice. They should not be treated as fixed performance specifications for a specific fan model. Final airflow, pressure, motor power, materials and configuration must be confirmed from the actual project conditions and technical quotation.