Product Description

Product overview:

Servo hydraulic cylinder is the hydraulic actuator in the electro – hydraulic servo system.As the servo hydraulic cylinder is a key link in the closed loop of the electro-hydraulic servo system, its performance index directly affects the precision and the dynamic and static quality of the system.

Servo hydraulic cylinder and common hydraulic cylinder, cylinder and cylinder head, piston and piston rod, sealing device, buffer device and exhaust device 5 parts.

Servo cylinder is the servo motor and screw integrated design of modular products, the servo motor rotation into linear motion, at the same time the servo motor zui good advantages – accurate speed control, accurate revolution control, accurate torque control into – accurate speed control, accurate position control, accurate thrust control;High precision linear motion series of new revolutionary products.

Product advantages:

The servo hydraulic cylinder manufactured by HangZhou xinlaifu hydraulic pneumatic equipment co., ltd. has the following advantages:

1. Low friction, no crawling, high frequency response;Low internal leakage, low external leakage;Its friction pair is usually treated specially.

2. Steel cylinder: hard chrome plated polishing or fine grinding of internal friction surface.

3. Piston seal: o-ring made of polyethylene filled with glass beads.

4. Piston rod seal: pre-added lip seal ring made of butadiene rubber, also with a small cone inside the CZPT sleeve static and dynamic pressure seal ring.

Piston rod CZPT sleeve: FE3N cast iron with high wear resistance and hardness.

6. Dust ring: bimetal type, and pre-ground into a cutting edge type.

7. Oil pipe: the oil pipe between the servo valve and the hydraulic cylinder passes through the channel directly drilled in the ferry block and preinstalled thick wall rigid short pipe (accessories).

The servo hydraulic cylinder manufactured by us is mainly reflected in the following aspects:

1. Hydrostatic bearing seal

The hydrostatic bearing is provided with a hydrostatic piston rod CZPT device, and the rod CZPT device and the seal are in 1 component.The piston rod floats on an oil film and can withstand large transverse shear forces.The pressure supply of the static bearing is realized through the internal structure of the cylinder, which can bear a large lateral force. Because the sealing and dustproof ring with contact do not bear the pressure, the residual friction within the whole pressure range is very small, thus ensuring the high dynamic and high life characteristics of the servo hydraulic cylinder.

2. Ring gap seal

Ring gap seal is a non-contact seal, due to the difference in pressure, so that the oil through the smaller orifice to form a very thin oil film, so as to replace the ordinary seal to achieve the sealing effect, but its zui large lateral force is limited.There is no pressure on the contact seal and dustproof ring, the piston rod is guided by the CZPT element optimized for friction, so the starting friction within the whole pressure range is very small, thus ensuring the servo hydraulic cylinder’s high dynamic and high life characteristics.

• The difference between ordinary hydraulic cylinder and servo hydraulic cylinder
• Common hydraulic cylinder servo hydraulic cylinder
• The cylinder should meet the requirement of strength, stiffness and strength
• The force end of the piston rod should meet the requirement of stiffness and there is no instability problem
• The effect of fixed stiffness on stability should be calculated when the fixed method meets the requirements of strength and action
• The output of the cylinder should satisfy the dynamic index of the system under static load and dynamic load
• Cylinder seal is to prevent oil leakage and leakage to prevent internal leakage and leakage, the sealing ring dynamic, static friction coefficient is close, and the friction coefficient as small as possible.If the requirements of repeated speed, sometimes need a certain amount of internal leakage.
• The running speed of the cylinder is controlled by the electrical signal, so it is unnecessary to consider the buffering device.
• The position of the sensor on the drive cylinder may prevent the travel switch from being considered
• The closer the distance between the pump station and the valve stand from the actuator servo valve and the hydraulic cylinder, the better
• Few disassembly facilitate tear open outfit, convenient check servo valve and the sensor

Servo cylinder features:

closed-loop servo control, control accuracy up to 0.01mm;Fine control thrust, increase pressure sensor, control precision up to 1%;

It is easy to connect with PLC and other control systems to achieve high precision motion control.Low noise, energy saving, clean, high rigidity, impact resistance, long life, simple operation and maintenance.

The servo cylinder can be trouble-free in harsh environment, and the protection level can reach IP66.Long-term work, and achieve high intensity, high speed, high precision positioning, smooth movement, low noise.

So it can be widely used in paper industry, chemical industry, automobile industry, electronic industry, mechanical automation industry, welding industry and so on.

Low cost maintenance: the servo cylinder only needs regular grease injection and lubrication when working in complex environment, and no vulnerable parts need maintenance and replacement, which will reduce a lot of after-sales service costs compared with the hydraulic system and pneumatic system.

Hydraulic cylinder and cylinder zui good alternative: servo cylinder can completely replace the hydraulic cylinder and cylinder, and realize the advantages of more environmental protection, more energy saving, cleaner, easy to connect with PLC and other control systems, to achieve high precision motion control.

Configuration flexibility: can provide very flexible installation configuration, full series of installation components: installation flange, back flange, side flange, rear hinged, lug shaft installation, CZPT module;It can be installed directly with the servo motor or in parallel;Various accessories can be added: limit switch, planetary reducer, pretightening nut, etc.Drive can choose ac brake motor, dc motor, stepper motor, servo motor.

Application field

1. Entertainment industry: robot arms and joints, dynamic seats, etc

2. Military industry: simulation aircraft, simulation and simulation, etc

3. Automobile industry: press machine, test instrument, etc

4. Industrial industry: food machinery, ceramic machinery, welding machinery, lifting platform, etc

Customer Service

1. You may email us through the Alibaba messaging system if you have a question

or would like to submit a comment.

2. Generally, email will be responded to within 24 hours; except on every Sunday

and holidays. We will reply as soon as we back in office.

2. We will send you tracking information to the e-mail address you have registered with Alibaba.

3. If you don’t see what you are looking for, just send us an e-mail with picture/picture

and we will be glad to help you.

4. Positive feedback is very important to us.

Packaging & Shipping
Delivery Details

Delivery time depends on the destination and other factors, it may up to 7 work days.

In order to ensure you receive you order tax free upon import, we will declare it as a “Sample”with a lower value.This lower price does not reflect the total price you paid.

After we ship the goods, we will email you the shipping information, as well as tracking number.

FAQ
Questions you maybe inquiry

Q1:Could you custom products?

We can manufacture it according to your drawings or samples.

Q2: I want to buy your products, how can I pay?

A :You can pay via T/T , WEST UNION or other payment terms we reach agreement.

Q3: How can you guarantee the quality?

A: One year’s warranty against B/L date.

If You meet with quality problem, we promise to responsible for it.

Q4: If we don’t find what we want on your website, what should we do?

A: You can email us the descriptions and pictures of the products you need, We will check whether we can make it.

Q5: Can we buy 1 pc of each item for quality testing?

A: Yes, we understand quality test is important and we are glad to send 1pc for quality testing.

Q6: What is the lead time?

A: For this product, normally 3 days,3 days and lead time is calculated from the day we receive your deposit.

Exact time is determined by factory schedule.

Our customer say:

The Four Basic Components of a Screw Shaft

There are 4 basic components of a screw shaft: the Head, the Thread angle, and the Threaded shank. These components determine the length, shape, and quality of a screw. Understanding how these components work together can make purchasing screws easier. This article will cover these important factors and more. Once you know these, you can select the right type of screw for your project. If you need help choosing the correct type of screw, contact a qualified screw dealer.

Thread angle

The angle of a thread on a screw shaft is the difference between the 2 sides of the thread. Threads that are unified have a 60 degree angle. Screws have 2 parts: a major diameter, also known as the screw’s outside diameter, and a minor diameter, or the screw’s root diameter. A screw or nut has a major diameter and a minor diameter. Each has its own angle, but they all have 1 thing in common – the angle of thread is measured perpendicularly to the screw’s axis.
The pitch of a screw depends on the helix angle of the thread. In a single-start screw, the lead is equal to the pitch, and the thread angle of a multiple-start screw is based on the number of starts. Alternatively, you can use a square-threaded screw. Its square thread minimizes the contact surface between the nut and the screw, which improves efficiency and performance. A square thread requires fewer motors to transfer the same load, making it a good choice for heavy-duty applications.
A screw thread has 4 components. First, there is the pitch. This is the distance between the top and bottom surface of a nut. This is the distance the thread travels in a full revolution of the screw. Next, there is the pitch surface, which is the imaginary cylinder formed by the average of the crest and root height of each tooth. Next, there is the pitch angle, which is the angle between the pitch surface and the gear axis.

Head

There are 3 types of head for screws: flat, round, and hexagonal. They are used in industrial applications and have a flat outer face and a conical interior. Some varieties have a tamper-resistant pin in the head. These are usually used in the fabrication of bicycle parts. Some are lightweight, and can be easily carried from 1 place to another. This article will explain what each type of head is used for, and how to choose the right 1 for your screw.
The major diameter is the largest diameter of the thread. This is the distance between the crest and the root of the thread. The minor diameter is the smaller diameter and is the distance between the major and minor diameters. The minor diameter is half the major diameter. The major diameter is the upper surface of the thread. The minor diameter corresponds to the lower extreme of the thread. The thread angle is proportional to the distance between the major and minor diameters.
Lead screws are a more affordable option. They are easier to manufacture and less expensive than ball screws. They are also more efficient in vertical applications and low-speed operations. Some types of lead screws are also self-locking, and have a high coefficient of friction. Lead screws also have fewer parts. These types of screw shafts are available in various sizes and shapes. If you’re wondering which type of head of screw shaft to buy, this article is for you.

Threaded shank

Wood screws are made up of 2 parts: the head and the shank. The shank is not threaded all the way up. It is only partially threaded and contains the drive. This makes them less likely to overheat. Heads on wood screws include Oval, Round, Hex, Modified Truss, and Flat. Some of these are considered the “top” of the screw.
Screws come in many sizes and thread pitches. An M8 screw has a 1.25-mm thread pitch. The pitch indicates the distance between 2 identical threads. A pitch of 1 is greater than the other. The other is smaller and coarse. In most cases, the pitch of a screw is indicated by the letter M followed by the diameter in millimetres. Unless otherwise stated, the pitch of a screw is greater than its diameter.
Generally, the shank diameter is smaller than the head diameter. A nut with a drilled shank is commonly used. Moreover, a cotter pin nut is similar to a castle nut. Internal threads are usually created using a special tap for very hard metals. This tap must be followed by a regular tap. Slotted machine screws are usually sold packaged with nuts. Lastly, studs are often used in automotive and machine applications.
In general, screws with a metric thread are more difficult to install and remove. Fortunately, there are many different types of screw threads, which make replacing screws a breeze. In addition to these different sizes, many of these screws have safety wire holes to keep them from falling. These are just some of the differences between threaded screw and non-threaded. There are many different types of screw threads, and choosing the right 1 will depend on your needs and your budget.

Point

There are 3 types of screw heads with points: cone, oval, and half-dog. Each point is designed for a particular application, which determines its shape and tip. For screw applications, cone, oval, and half-dog points are common. Full dog points are not common, and they are available in a limited number of sizes and lengths. According to ASTM standards, point penetration contributes as much as 15% of the total holding power of the screw, but a cone-shaped point may be more preferred in some circumstances.
There are several types of set screws, each with its own advantage. Flat-head screws reduce indentation and frequent adjustment. Dog-point screws help maintain a secure grip by securing the collar to the screw shaft. Cup-point set screws, on the other hand, provide a slip-resistant connection. The diameter of a cup-point screw is usually half of its shaft diameter. If the screw is too small, it may slack and cause the screw collar to slip.
The UNF series has a larger area for tensile stress than coarse threads and is less prone to stripping. It’s used for external threads, limited engagement, and thinner walls. When using a UNF, always use a standard tap before a specialized tap. For example, a screw with a UNF point is the same size as a type C screw but with a shorter length.

Spacer

A spacer is an insulating material that sits between 2 parts and centers the shaft of a screw or other fastener. Spacers come in different sizes and shapes. Some of them are made of Teflon, which is thin and has a low coefficient of friction. Other materials used for spacers include steel, which is durable and works well in many applications. Plastic spacers are available in various thicknesses, ranging from 4.6 to 8 mm. They’re suitable for mounting gears and other items that require less contact surface.
These devices are used for precision fastening applications and are essential fastener accessories. They create clearance gaps between the 2 joined surfaces or components and enable the screw or bolt to be torqued correctly. Here’s a quick guide to help you choose the right spacer for the job. There are many different spacers available, and you should never be without one. All you need is a little research and common sense. And once you’re satisfied with your purchase, you can make a more informed decision.
A spacer is a component that allows the components to be spaced appropriately along a screw shaft. This tool is used to keep space between 2 objects, such as the spinning wheel and an adjacent metal structure. It also helps ensure that a competition game piece doesn’t rub against an adjacent metal structure. In addition to its common use, spacers can be used in many different situations. The next time you need a spacer, remember to check that the hole in your screw is threaded.

Nut

A nut is a simple device used to secure a screw shaft. The nut is fixed on each end of the screw shaft and rotates along its length. The nut is rotated by a motor, usually a stepper motor, which uses beam coupling to accommodate misalignments in the high-speed movement of the screw. Nuts are used to secure screw shafts to machined parts, and also to mount bearings on adapter sleeves and withdrawal sleeves.
There are several types of nut for screw shafts. Some have radial anti-backlash properties, which prevent unwanted radial clearances. In addition, they are designed to compensate for thread wear. Several nut styles are available, including anti-backlash radial nuts, which have a spring that pushes down on the nut’s flexible fingers. Axial anti-backlash nuts also provide thread-locking properties.
To install a ball nut, you must first align the tangs of the ball and nut. Then, you must place the adjusting nut on the shaft and tighten it against the spacer and spring washer. Then, you need to lubricate the threads, the ball grooves, and the spring washers. Once you’ve installed the nut, you can now install the ball screw assembly.
A nut for screw shaft can be made with either a ball or a socket. These types differ from hex nuts in that they don’t need end support bearings, and are rigidly mounted at the ends. These screws can also have internal cooling mechanisms to improve rigidity. In this way, they are easier to tension than rotating screws. You can also buy hollow stationary screws for rotator nut assemblies. This type is great for applications requiring high heat and wide temperature changes, but you should be sure to follow the manufacturer’s instructions.