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Yijia Hardware Industrial Supermarket, as an innovative leader in the industry, is committed to providing one-stop hardware procurement solutions for various industrial enterprises, construction projects, and DIY enthusiasts. Our large-scale 4,000-square-metre supermarket showcases more than 20,000 hardware products from world-renowned brands as well as high-quality local manufacturers.
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![Ultra-thin Cylinders]()
Ultra-thin CylindersStructural design Thin and compact: The most significant feature of the ultra-thin cylinder is its extremely low thickness, the compact design and optimized structure make its thickness greatly reduced, and the total length is only...view more -
![Standard Cylinders]()
Standard CylindersStructural composition Cylinder barrel: It is the main part of the cylinder, usually cylindrical, and the size of the inner diameter determines the output force of the cylinder. The piston slides on its smooth inner surface, and the...view more -
![L-shaped Throttle Valve]()
L-shaped Throttle ValveThe structure and working principle of the L-type throttle valve L-type throttle valve is usually with L-shaped flow channel design, composed of water inlet pipe, throttle valve body and L-shaped outlet pipe, the overall structure is...view more
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Professional Team
We terms of service, we have a team of professionally trained staff who not only have deep knowledge of hardware products, but also can provide accurate product recommendations and technical support according to the specific needs of customers.
Diversified Demand
We From basic screws, nuts, tools and measuring tools, to high-end industrial equipment and electrical components, we have everything to meet the diverse needs of different customers at different project stages.
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We provide convenient online and offline shopping channels, the online platform is easy to operate, customers can browse and place orders anytime and anywhere.
Production Market
Yijia hardware has a wide range of mechanical and electrical sales, with footprints in Europe, America, Asia, Africa, Latin America and other countries.
Quick couplers (also called quick hitches) are used with construction machines to allow the rapid change of working tools or buckets and attachments on the machine. They remove the need to use hammers to manually drive out and insert the mounting pins for attachments.
Spill prevention:
These fittings improve performance and reduce media spillage, including hydraulic fluid or air. As a result, spills are reduced, making the environment cleaner and protecting workers.
Significantly reduced inclusion:
Inclusion happens when air or contaminants enter the system. This is because contaminants can enter a system when a coupling is disconnected. But a quick connect fitting allows next-to-no inclusion each time it is disconnected and reconnected.
Increased efficiency:
Quick connect couplings are easy to connect, which means significantly less time spent changing pieces of equipment and more time getting the work done. Less downtime means jobs are done faster, which results in time to take on even more work.
Reliability in harsh environments:
Quick disconnects provide secure connections even if left connected for long periods of time. Their quality construction and rugged materials make them durable enough to withstand harsh working conditions and repeated connections and disconnections without failure.
Elimination of accidental disconnections:
With important connections in key or even dangerous areas, an accidental disconnection can be disastrous. Some quick connect fittings are designed to avoid these unintentional disconnections so that the equipment can operate safely and efficiently.
Types of Quick Couplings
Flat connector
Flat joints almost eliminate spillage by limiting leaking to one drop or less when separated. Additionally, it is simple to keep the flat mating surface clean to avoid contaminating the hydraulic fluid during reconnection. Each mating side of the flat non-leakage joint features a poppet shut-off valve. Most only allow for the development of an oil film on the coupling mating surface during disengagement and keep air out during connection. Additionally, they are made to limit flow as little as possible, reducing pressure loss while the device is in use.
Bayonet couplings
Bayonet couplings, particularly plastic couplings for light pneumatic equipment, are frequently employed in a variety of applications and rely on well-known twist-lock systems. When the plug is inserted into the socket, the lugs on its outer diameter engage with the grooves in the socket sleeve to provide a connection between the two connecting parts. To secure the lugs, swiftly turn. To separate the two pieces, turn the plug counterclockwise.
The lock ring coupling
The split ring used by the lock ring coupling is situated in the socket’s groove and groove. When the plug is pushed into position, the ring at the opening is separated by the plug’s bevel until the ring clamps onto the plug behind the fixed shoulder. The ring expands when the outer sleeve is rotated, freeing it from the fixed shoulder and allowing the two parts to be pulled apart. With this design, a compact space can accommodate the highest flow rate for typical workshop air applications. Instead of split rings, jaws are used in this design’s variant to lock the components together.
Material of Quick Couplings
Carbon steel
An alloy made with carbon and iron with a higher carbon content than stainless steel. Steel with an increased carbon content becomes stronger and has a lower melting point for more malleability and improved heat distribution. Carbon steel couplings are often the material of choice for many manufacturing applications due to their strength and durability.
Stainless steel
And iron alloy that is resistant to corrosion and rusting that contains at least 11% chromium but may contain other elements such as carbon, metals, and nonmetals to obtain specific properties. Chromium provides corrosion resistance in stainless steel that protects materials in the presence of oxygen. Stainless steel couplers are often used in harsh environments and applications subjected to corrosive fluids. There are different grades of stainless steel, such as 316, 360, and 630, with varying properties.
Brass Quick Couplers
Brass quick couplings are robust and resist high temperatures, suitable for many applications with refrigerants, mold and die, and industrial applications.
Quench Polish Quench (QPQ)
A specialized nitrocarburizing case hardening surface treatment that enhances corrosion resistance.
Structure
We offer the following Product introduce:
Thin and compact: The most significant feature of the ultra-thin cylinder is its extremely low thickness, the compact design and optimized structure make its thickness greatly reduced, and the total length is only 1/2-1/3 of the general cylinder, which can adapt to the limited installation space.
Main components: Including cylinder barrel, end cover, piston, piston rod, seal, etc. The inner diameter of the cylinder barrel determines the output force, and the inner surface roughness is up to Ra0.8μm, and materials such as steel pipes, high-strength aluminum alloys, brass or stainless steel are often used. There is an intake and exhaust channel and a buffer mechanism on the end cover, and the end cover on the side of the rod is provided with a sealing ring, a dustproof ring and a guide sleeve; The piston is equipped with a sealing ring and a wear-resistant ring, and the material is mostly aluminum alloy, cast iron or brass; The piston rod is generally made of high carbon steel with hard chrome plating, or stainless steel.
Cylinder barrel: It is the main part of the cylinder, usually cylindrical, and the size of the inner diameter determines the output force of the cylinder. The piston slides on its smooth inner surface, and the roughness of the inner surface is generally required to reach Ra0.8μm to ensure the stability of the piston movement.
End caps: Installed at both ends of the cylinder barrel, they are provided with intake and exhaust ports, and some end caps are also provided with buffer mechanisms to slow down the impact of the piston at the end of the stroke. Seals, wipers and guide sleeves are also usually provided on the rod side end caps to prevent air leakage, dust and improve the guiding accuracy of the cylinder.
Piston: It is a key part of the cylinder to withstand pressure, and the piston sealing ring prevents the left and right chambers from blowing each other. The wear ring on the piston can improve the guiding property of the cylinder, reduce the wear of the piston sealing ring, and reduce the frictional resistance, and its material is often polyurethane, polytetrafluoroethylene, etc.
Seal: It is used to prevent the leakage of compressed air in the cylinder and ensure the working efficiency and performance of the cylinder. Common sealing materials are rubber, polyurethane, etc., and the seals are installed in the fitting parts of the piston, piston rod and cylinder barrel and end cover.
Packaging & Shipping
FAQ
As one of the leading quick couplings suppliers in China, we warmly welcome you to wholesale quick couplings made in China here from our factory. All customized tools are with high quality and competitive price. Contact us for free sample.
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