China Pneumatic Actuator Manufacturers, Suppliers, Factory - Customized Pneumatic Actuator

Company Profile

ZHEJIANG BIGTORK VALVE AUTOMATION CO,.LTD was located in famous pump and valve manufacturer base--Wenzhou City, China since founded by Mr zhang in 2006. Bigtork® take part in domestic and oversea gas and oil project in 2011, and now have a extensive experience in industry valve automation and flow control. Company has signed framement agreement with SINOPEC and CNOOC as qualified Pneumatic Actuator supplier. Meanwhile, we are the reliable business partner of foreign world famous brand.

Why Choose Us?

Rich experience
BIGTORK not only focus on manufacturing Rotary & Linear and Pneumatic & Hydraulic valve actuator, but also offering one industry process control solution since founded by Mr zhang in 2006. We have 18+ extended production experience and 14+ extensive globle project undergo.

Strong R&D ability
Our team involves 6 engineers who owns domestic and oversea project work experience. We supply 100% technical support and problem solution for whole product life. Size selection tool that self owned software is avaivable for every clients.

Quality assurance
All series products strictly controlled with 9 processes by ISO and other system. The business partner of the raw material and components are profession major which supply for world renowned brand. A product warranty was provided with final testing and test report accordance with international product standards.

One stop service
Bigtork offer OEM & ODM services according to your requests from pre-sale to after-sale period. Each project has its own sale service tracking records. Each staffs is well trained to master proficient skill and full professional knowledge to support industry flow control one stop solution service.

Double-Acting P350Scotch Yoke Actuator
This scotch yoke pneumatic actuator adopts a high-output torque structural design and is suitable for automated opening and closing control of 90° rotary valves such as ball valves and butterfly valves. The actuator features a compact
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Pneumatic Actuator WithBall Valve
This is a rack-and-pinion pneumatic actuator designed for use with industrial piping systems.
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AT190 SR Spring-returnpneumatic Actuator
The AT190SR spring-return pneumatic actuator features a robust, one-piece design with a highly recognizable blue industrial coating. With its sturdy, compact body, it is suitable for field applications that demand safe reset, stable
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Single-acting Rack-and-pinion Pneumatic Actuator
The AT Series pneumatic actuators feature a rack-and-pinion drive mechanism and are specifically designed for industrial automation valves. Suitable Right-angle valves such as ball valves, butterfly valves, and plug valves, they provide
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Pneumatic Single-Acting Actuator With Bevel Gear Drive
This high-performance pneumatic single-acting actuator is engineered for heavy-duty quarter-turn valve applications.This actuator incorporates a bevel gear drive mechanism that enables directional reversal and speed reduction with torque
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Pneumatic Quarter-Turn Valve Actuator
BIGTORK pneumatic rotary actuators are specifically designed for industrial automation valve control applications and are suitable for 90° rotary valves such as ball valves and butterfly valves.
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Compact Pneumatic Quarter-Turn Actuator
This product is a compact pneumatic quarter-turn actuator designed for industrial automation control applications. It is primarily used for the opening and closing control of ball valves, butterfly valves, and other 90-degree rotary
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Large Bore Spring Return Actuator
The large-bore spring-return actuator is a heavy-duty, single-acting, spring-return Scottish yoke pneumatic actuator designed specifically for the automated control of large ball valves, butterfly valves, plug valves, and other 90° rotary
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Air Power Actuator
A rack-and-pinion pneumatic actuator is a valve drive device that converts compressed air energy into rotational motion to open and close valves. The Bigtork® model is particularly suitable for 90° rotary valves such as ball valves,
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Pneumatic Actuator AT Seriesr
A pneumatic actuator is a device that uses compressed air as its power source to drive valves for opening, closing, or regulating control. This device is also known as a pneumatic actuator or pneumatic unit, and is commonly referred to as
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BG Series Scotch Yoke Actuator
The BG Series Scotch Yoke Actuator is a compact, high-torque, and reliable quarter-turn actuator designed specifically for the automated control of ball valves, butterfly valves, and plug valves.
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Angular Actuator
The angle actuators are powered by pneumatic or hydraulic systems, offering efficient and reliable solutions for 90-degree angle valves, dampers, and various industrial equipment. With their compact design and reliable performance, they
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What is Pneumatic Actuator？

By definition, a pneumatic actuator is a device that converts energy typically in the form of compressed air into mechanical motion. Within the industry, pneumatic actuators are recognised by several different names including pneumatic cylinders, air cylinders, and air actuators; all of which are one and the same.

Consisting of a piston, cylinder, and shaft/rod or ports, a pneumatic actuator can convert energy into linear or rotary mechanical motions. This is dependent on whether the application is using a pneumatic rotary actuator or a linear actuator.

Benefits of Pneumatic Actuator

1. High force & speed of movement

Pneumatic actuators can deliver high force and fast speeds of movement when used in linear motion control applications. This is down to the usage of air pressure and flow within the device.

2. High durability

Overheating is not a problem of concern with pneumatic actuators, regardless of how excessive the use of the application is. These devices can sustain constant pressures in comparison to alternative devices and therefore offer a longer-term of use

3. High reliability

When it comes to functionality, the pneumatic actuator is viewed to be highly reliable. This is thanks largely to the high control that can be maintained on the conversion of gas to energy. The fact that as mentioned already, they are also highly durable means that performance is of a high standard and these devices have a long life span.

4. Clean technology

Pneumatic actuators are the preferred device for use when it comes to applications where hygiene is essential. This is largely down to the use of air as opposed to fluid, with the compressed air being free from harmful chemicals, therefore protecting the application from contamination. This, of course, is critical within the pharmaceutical and food and beverage industries.

5. Cost effective

Thanks in part to the fact that it is easy to install and maintain, the pneumatic actuator is often seen as the cost-effective choice when it comes to industrial applications. Of course, the benefits above are probably considered more important from a practicality standpoint, but in the current economic environment, the cost is still very much at the forefront of every application manager’s mind.

Types of Pneumatic Actuator

Pneumatic actuators come in two primary types: linear and rotary.

Linear actuators

Linear actuators are amazingly versatile because their operation is simple: the actuator moves a precise distance (measured in inches or millimeters), then stops. That means they can push and/or pull loads in a straight line, but that same essential motion can also be used to clamp, block, lift or lower, and eject something. Linear actuators are often paired with motors to operate pumps, valves, and switches.

Linear actuators can be powered by compressed air, hydraulic fluid, or electricity. Regardless of power source, they are reliable and cost-efficient to operate, though not necessarily under the same circumstances.

Rotary actuators

Where linear actuators can move loads only in a straight line, rotary actuators can move them at virtually any angle or provide continuous spinning. Picture a conveyor with a swing gate that pivots into position to divert an item onto another conveyor, into a box, etc. Or an arm that lifts and turns the item onto its side as it moves forward.

Rotary actuators are often used in conjunction with linear actuators. They can be powered by either compressed air or hydraulic fluid systems.

Application of Pneumatic Actuator

Automobile engine
Pneumatic actuators are used in a variety of automotive applications, including engine control, transmission control, and braking systems. Pneumatic actuators offer many advantages over hydraulic and electric actuators, including higher power density, lower weight, and more precise control.

Material handling
Pneumatic actuators are widely used in material handling applications. They are well suited for these applications because they can provide high force output with a relatively small footprint. Additionally, pneumatic actuators are often used in applications where precise control is required, such as in pick-and-place operations.

Pneumatic cylinders are the most common type of pneumatic actuator and are well-suited for use in material handling applications.

Food and beverage production
Pneumatic actuators are used extensively in the food and beverage production industry due to their versatility, reliability, and cost-effectiveness. They are commonly used in conveyor systems to move products from one stage of production to the next, as well as in packaging and labelling machines.
Pneumatic actuators can also be used in process control applications such as regulating the flow of liquids and gases or controlling the temperature of ovens and other cooking equipment. In addition, these actuators are often used in sanitation applications due to their ability to withstand harsh cleaning chemicals.

Components of Pneumatic Actuator

Valve

The pneumatic actuator valve controls the flow of compressed gas as it goes into the cylinder or housing, allowing for variable actuator speed, torque, and other options.

Cylinder/housing

The pneumatic actuator cylinder is the air-tight chamber that receives compressed gas. It contains a piston that moves under the action of air pressure.

Piston/diaphragm/vane

Depending on the type of this device, a piston, diaphragm, or vane is pushed by pressurized air to cause motion.

Rod/shaft

This part connects the moving piston, diaphragm, or vane to the load, transferring the air-generated motion.

Return spring

Some types of air actuators, called single-acting actuators, use a return spring to retract the moving part when air vents out and pressure reduces.

Process of Pneumatic Actuator

The role of compressed air
The heart of any pneumatic system is its supply of compressed air. Air compressors are used to draw in atmospheric air, which is then compressed to a higher pressure. This compressed air is stored in a tank and distributed through a network of pipes to the actuators. The energy stored in this compressed air is what pneumatic actuators harness to perform work.

Entering the cylinder
A pneumatic actuator typically comprises a cylindrical chamber (cylinder) in which a piston can move back and forth or rotate, depending on the design. The cylinder has one or more ports through which compressed air can enter or exit. Control valves regulate the flow of air into and out of the cylinder, directing the air to either side of the piston to control its movement.

Piston movement
When compressed air is introduced into the cylinder on one side of the piston, it creates pressure that pushes the piston to move. This movement can be linear (straight line) or rotary (circular), based on the type of actuator. The piston is connected to a rod in linear actuators, which extends outside the cylinder to perform work. In rotary actuators, the piston's movement is converted into rotational motion, often through a rack and pinion mechanism.

Control and precision
The movement of the piston can be precisely controlled in terms of speed, position, and force. This is achieved through a combination of control valves, flow restrictors, and sensors. Valves can quickly switch the flow of air, changing the direction of the piston’s movement or stopping it altogether. Flow restrictors can adjust the speed of movement by limiting the flow of air into or out of the cylinder. Sensors provide feedback on the piston's position, allowing for precise control over its movement.

How to Maintain Pneumatic Actuator

Actuators:
1. Check that the piston rod has not been damaged by material debris, rust, or corrosion.

2. Remove debris build-up on the piston rod to prevent nose and wiper seals leaking.

3. Check that the piston seals are not worn, which could be lowering the potential thrust generated.

4. Remove moisture or debris contamination from cylinder barrels that could damage piston seals.

5. Check all the pivots on cylinder mountings.

6. If the cylinder model includes adjustable cushioning, is it functioning to a satisfactory level?

Air prep devices:
7. Check the Polycarbonate bowl on the filter. Does it display any cracking or grazing?

8. Is the auto drain still working or leaking? Does the drain present audible leakage?

9. Is the lubricator delivering the correct level of oil supply downstream?

10. Do the pressure gauges still monitor output pressure or is it broken?

11. Is the filter element clean enough to prevent pressure drops?

12. Is the regulator maintaining optimum pressure? Does the relief hole display a continuous audible leak when under pressure?

13. Check that the open exhaust ports or breathers are clear to prevent ingress of debris from entering.

14. Check that the upstream filters are not restricting air flow to valves.

Solenoids and valves:
15. Solenoid operators may slow down at the end of their life cycle – check that the speed of operation is still at optimum levels.

16. Check mechanical operators for general wear and tear. Replace if necessary – the consequences of failure can be dangerous!

17. Check that the exhaust ports on valves do not present continuous audible leaks.

General overview:
18. Whilst machines aren’t running, listen for leaks through the whole system.

Pneumatic vs. Electric Actuators

While pneumatic cylinders work by way of pressurized air, electric actuators use electricity to function. Electric actuators are made up of a screw, coupler and motor, such as a stepper or servo. The screw turns and moves a nut, which makes the connecting rod or carriage shift the load. While pneumatic and electric actuators have similar uses, they aren’t directly interchangeable in every industry.

These two types of actuators vary in several other ways:

Cost: Overall, pneumatic actuators have lower initial costs than the electric variety, but each has their purposes, and either could end up saving money in operating costs. Pneumatic cylinders are the most cost-efficient when the compressor size matches the number of cylinders it’s powering. Electric actuators provide the highest level of efficiency in moderate scales, though they have low operating costs in general.

Force: In pneumatic actuators, speed and thrust are positively linked, meaning as one increases, the other does as well. In electric actuators, thrust and speed do not have the same link, as one decreases as the other increases. You can engineer them to perform differently, but it requires higher expenses.

Control: Where pneumatic cylinders are better for industries that need force, electric actuators provide more accurate control and positioning. The standard models of the electric variety can move with precision from hundredths to thousandths of an inch.

Here Are 4 Signs That Call for an Immediate Replacement of a Pneumatic Actuator.

Loud noises during operation

Generally, most pneumatic actuators produce a low or medium level of noise. However, they can get quite loud if an internal mechanical component is dislodged. Moreover, actuators work at a high intensity on a daily basis, which makes them even more susceptible to wear and tear. Hence, if your operators report any loud noises while operating the machine, consider having them replaced or at least examined.

Insufficient velocity

Pneumatic actuators use compressed air to generate high velocities, rapidly accelerating and decelerating as the occasion demands. Therefore, any drop in its speed is noticeable, indicating that it is poorly converting the input pressure. In such cases, you'll need to replace them with new ones. Have your maintenance team inspect your actuator’s performance daily to ensure you have sufficient velocity powering your tools and equipment.

Rusting and corrosion

Corrosion happens when moisture enters your air compressor. The compressor's components will suffer from rusting and corrosion before the actuators. Thus, if the actuators have begun rusting, then your air compressor is definitely worse for the wear. In such cases, consider having the entire pneumatic system repaired or replaced to maximize your productivity.

In operation for more than ten years

Any machine or pneumatic equipment will have a significant dip in performance upon reaching ten years of continuous, high-intensity operation daily, for no manufacturers can guarantee consistent performance beyond that point. If this is the case with your equipment, then consider replacing them.

Our Factory

Bigtork® have covered an area of total 20000 square meters, which its workshop for machining, assemble, testing and its warehouse for raw material, semi-finished product and finished product.

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FAQ

Q: What is a pneumatic actuator?

A: Pneumatic actuators are devices that convert the energy of compressed air or gas into a mechanical motion that regulates one or more final control elements. Pneumatic actuators are devices that convert the energy of compressed air or gas into a mechanical motion that regulates one or more final control elements.

Q: What is the purpose of the actuator?

A: An actuator is a device that receives an energy input and converts it into motion or force and is an essential component in many modern technologies and engineering fields. From robotics to renewable energy, actuators play a critical role in controlling and automating various processes and systems.

Q: What does an air actuator do?

A: It is the job of the AC actuator to control the opening and closing of the airflow in response to the thermostat, thus controlling air movement and allowing cool air to blow down the ducts and into the house.

Q: Do pneumatic actuators need power?

A: You don't need a motor to run a pneumatic actuator, but you will need electricity if you're using a pilot valve or solenoid directional control valve. Electrical actuators are more expensive to purchase, but their long-term running costs are usually lower and energy savings are more achievable.

Q: Where are pneumatic actuators used?

A: Fluid Power Applications: Pneumatic actuators are employed in pneumatic cylinders to generate linear or rotary motion. They are used in various equipment, including material handling systems, robotics, packaging machinery, and automotive assembly lines.

Q: What is the difference between pneumatic and actuator?

A: Fitting to the name, electric actuators run on electricity, while pneumatic actuators run on air pressure. So first and foremost, it's important to consider the power source, availability of such, and preferences when making your decision.

Q: How to control a pneumatic actuator?

A: There are several different ways to control pneumatic actuators. The most common method is to use a solenoid valve, which is a type of valve that is controlled by an electrical signal.

Q: What is the difference between a sensor and an actuator?

A: Sensors convert the physical characteristics from their environment to electrical signals for the system. Actuators convert the electrical signals from the system to various physical characteristics for their environments.

Q: What is the difference between valve and actuator?

A: A valve is an equipment used to control the flow of a fluid in a pipe line. To control the flow, the valve needs to be opened or closed as required. An actuator is a device fitted with any valve that enables the operation ( opening or closing) of the valve.

Q: When to use a pneumatic actuator?

A: They're especially appropriate for the repeated opening and closing of valves and other industrial applications where the use of electricity may cause a fire or ignition hazard. Actuators are commonly used to control the valves that direct the movement of fluids in the chemical and process industries.

Q: What is an example of a pneumatic actuator?

A: For example, a rod is moved in and out of a cylinder in a linear motion by a pneumatic energy source. A rotary pneumatic actuator can make something move in a circular motion. For example, a rod in a rack and pinion drive system is used to produce rotary motion.

Q: What is the function of pneumatic actuator?

A: The purpose of a Pneumatic actuator is to open or shut off the valves and other industrial applications, where the use of excessive power may leads to fire explosion. In short, Actuators are regularly used to control the valves that direct the development of liquids.

Q: Do pneumatic actuators require a fluid to operate?

A: The primary advantage of pneumatic systems is that they run on compressed air or gas instead of fluid. As a result, they are involatile and require no electricity to perform. Pneumatic actuators are versatile and affordable, making them popular for braking systems and pressure sensors.

Q: Is a pneumatic actuator the same as a pneumatic cylinder?

A: Pneumatic cylinders, also known as pneumatic actuators or air cylinders, are designed to convert compressed air energy into a reciprocating linear motion in automated industrial applications.

Q: How important is an actuator?

A: Actuators are used in various types of precision devices, such as robots and cameras. They are essential to the high-precision machinery operations, such as the opening and closing of covers and the extending and bending of tube ends.

Q: Do pneumatic actuators work by electricity?

A: Pneumatic actuators rely on compressed air or gas as the primary power source. These actuators don't require a motor, but electricity is necessary when paired with an integral solenoid valve which is commonly referred to as a pilot valve.

Q: How do you control a pneumatic actuator?

A: If you are looking to control the speed of the pneumatic actuator in your application, the most effective way is to use a speed control valve or flow control valve to vary the amount of flow out of the exhaust port of the actuator.

Q: Are pneumatic actuators loud?

A: Generally, most pneumatic actuators produce a low or medium level of noise. However, they can get quite loud if an internal mechanical component is dislodged. Moreover, actuators work at a high intensity on a daily basis, which makes them even more susceptible to wear and tear.

Q: What makes an actuator stop working?

A: Whenever there's an issue with an actuator, the problem may really be with one or moreof the valves. Valve stems become worn out, the packing can seize up, the valve may have picked up an obstruction, or the valve itself could be experiencing too much torque.

Q: What is the working fluid for pneumatic actuators?

A: Pneumatic actuators are mechanical devices that use compressed air acting on a piston inside a cylinder to move a load along a linear path. Unlike their hydraulic alternatives, the operating fluid in a pneumatic actuator is simply air, so leakage doesn't drip and contaminate surrounding areas.

Zhejiang Bigtork Valve Automation Co., Ltd. is one of the leading pneumatic actuator manufacturers and suppliers in China. We warmly welcome you to buy customized pneumatic actuator at competitive price from our factory. Contact us for more details.