(4296 products available)
A rotary hydraulic actuator is a device that transforms hydraulic energy into rotational motion. They are classified into multiple types based on their design, working principles, and applications. Common types of rotary hydraulic actuators include the following.
Hydraulic motor actuator
A hydraulic motor actuator (or hydraulic motor) is a rotary actuator that converts hydraulic fluid flow and pressure into rotational motion. The hydraulic fluid enters the motor and causes a gear set (or other internal components) to rotate. This motor's rotation then drives the connected load or machinery. The direction and speed of the actuator's rotation can be adjusted by changing the flow rate and pressure of the hydraulic fluid. Hydraulic motor actuators are commonly used in applications such as hydraulic presses, construction machinery, and material handling equipment, among others.
Synchro actuator
A synchro actuator is a type of rotary actuator that rotates in response to the position of a synchro transmitter. It has at least two rotor windings (the receiving element) and a stator winding (the transmitting element). A three-phase winding in the synchro transmitter generates rotating magnetic fields, which consequently produces a torque in the rotor of the receiving element. This actuator is mostly used in aircraft and missile applications. It's preferred in these applications because of its high torque and low speed, and it can be easily coupled to gears, wheels, and shafts.
Husco rotary actuator
A Husco rotary actuator is designed to provide precise motion control and actuation in hydraulic systems. It uses innovative hydraulic circuit designs to minimize backlash, maximize efficiency, and ensure smooth operation. This actuator can be used in off-highway applications such as construction equipment, agricultural machinery, and specialty vehicles. It features a compact design that allows easy integration into existing hydraulic systems.
Hydraulic rack and pinion actuator
This actuator converts hydraulic force into rotational motion using the rack and pinion mechanism. The hydraulic force moves the rack, which then turns the pinion. This motion is further transmitted to the output shaft or driven component. Hydraulic rack and pinion actuators al; so come with varying sizes and pressure ratings to accommodate several applications.
The specifications for hydraulic rotary actuator may vary depending on the specific type and manufacturer chosen. However, the following specifications may be typically included.
For hydraulic rotary actuators to work for longer, they need maintenance. The following maintenance tips can help keep the actuators in good shape.
Hydraulic rotary actuators play a pivotal role across diverse industries by enabling precise control of the rotation of different types of machines and equipment. Here are some of their common use scenarios.
Industrial Automation
Hydraulic rotary actuators are commonly used in industrial automation applications such as assembly lines, material handling, and packaging. For instance, they can be used to control the rotation of robotic arms for high-precision tasks like picking and placing objects or sorting items based on specific criteria. They can also be used in conjunction with other automated machinery for controlling the opening and closing of valves or gates.
Heavy Machinery
Heavy-duty hydraulic actuators are well-suited for handling high torque requirements and heavy loads. This makes them the go-to choice for the manufacturer of hydraulic actuators for forestry machines and mining industry equipment. In the mining industry, for instance, they can be used to control the rotation of crushers, shakers, and screens, among other heavy equipment used to break, separate, and sift ore and other minerals.
Aerospace and Automotive
In automotive and aerospace engineering, hydraulic rotary actuators are often used in conjunction with a gear to create a system that converts linear motion to rotary motion or vice versa. Such a scenario is common in vehicles with four-wheel drives wherein the actuator is responsible for engaging and disbanding the drive as per the need. In aircrafts, they are used in the control of flight control surfaces; throttle control; and engine control valves, to name a few.
Marine Applications
Hydraulic rotary actuators are extensively used in marine industry applications such as ship building and off-shore oil extraction. In ship building, for instance, they can be used to control rudder and throttle movements or for steering mechanisms. In off-shore oil extraction, they are used to control the opening and closing of blowout preventers (BOPs), subsea valves, and other critical operating system parts under water.
Robotics
In robotics, hydraulic rotary actuators are often the drive mechanism behind hydraulic robots. They typically have heavy loads and higher torque and are therefore capable of handling big tasks that require higher forces.
Semiconductor Manufacturing
In semiconductor manufacturing, precise movement and rotation of machine parts is a key requirement. Hydraulic rotary actuators step up to the challenge by providing the manufacturers with the necessary control and precision to ensure consistency and accuracy as the required machine component rotates. To this end, hydraulic rotary actuators can control the rotation of the wafer holders and other critical machinery components miele.
The following factors must be considered when selecting hydraulic rotary actuators for a hydraulic system:
System requirements:
Users should evaluate the functional requirements of the actuator for their application, such as the angle of rotation, torque requirements, speed, stroke length, etc. They should also consider the working environment of the actuator, such as temperature, pressure, humidity, presence of dust or corrosive substances, etc. This allows them to choose an actuator suitable for the environment.
Hydraulic parameters:
Users need to ensure that the actuator's working pressure matches the pressure range of the hydraulic system. They should also check if the actuator's flow requirements match the flow capacity of the hydraulic system to avoid flow bottlenecks or excess.
Installation and connection:
Users' hydraulic actuators need to be installed in different equipment or systems, so they should consider the installation dimensions and methods of the actuator. This includes factors such as mounting holes, flange dimensions, etc., to ensure a proper fit. They should also ensure the connection type and specifications of the actuator match those of the hydraulic system. For example, if the actuator uses a quick coupling, they need to ensure that the corresponding coupling is available in the hydraulic system.
Selection of models:
Considering the above factors, users can refer to the catalogs and technical documents of hydraulic actuator manufacturers to select suitable models. They should consider factors such as cost, performance, and delivery time when choosing a supplier to ensure that the chosen solution can meet their project needs.
Q1: How long do rotary actuators last?
A1: Normally, a rotary actuator can last more than 25000 hours under typical operating conditions. However, it's essential to note that the lifespan can vary widely based on several factors, such as quality, installation, maintenance, and operating environment.
Q2: What is the torque range of a rotary actuator?
A2: Rotary actuators come in various sizes and designs, so the torque may vary. However, it may range from 0.5 Nm to 1000,000 Nm or even higher for some specialized industrial rotary actuators.
Q3: Are hydraulic actuators better than electric?
A3: Hydraulic actuators are not always better than electric actuators. They are ideal for applications that need a high force output. On the other hand, electric actuators are suitable for applications that require high efficiency and precise control.
浙公网安备 33010002000092号
浙B2-20120091-4