Hydraulic cylinders of NMBY series have a high working pressure of 16Mpa and comply with CETOP RP58H and ISO6020/1 standards. It is ideal for use in moisture, dirty and extreme working environments.
Our medium pressure cylinders possess compact structure, light quality, reliable and high efficient performance, easy installing method, convenient to maintain, excellent buffering and flexible connecting methods.
We design and produce medium pressure hydraulic cylinder in accordance with working conditions, strokes, buffering devices and deflation valves.
Rated pressure: 160bar (No fatigue under rated pressure)
Hydraulic oil: Mineral hydraulic oil (Or others)
Standard sealing temperature range: -20℃~+80℃
Connecting: Cylinder head and covers connected with flanges by bolts
Inner diameter of cylinder: 40mm-320mm
Diameter of piston rod: 22mm-220mm
Buffering device: Either end
Deflation valve: Either end
Notes: If you have any questions, please do not hesitate to contact us. Our skilled technicians will give your solutions in as short amounts of time as possible.
1. Dust ring
2. Guide sleeve
4. Cylinder head
5. Retaining ring
7. Mounting flange
8. Wearing ring
9. Glyd ring
11. Cylinder tube
12. Piston rod
13. Cylinder cap
Because each of our tubes must undergo strict examination and inspection, cylinder tube manufactured by Hoyo is well known for its high degree of smoothness and low friction coefficient, providing a good protection of inside sealed parts.
Piston rod is manufactured with high tensile carbon alloy steel, and features a precisely machined cylindrical. The piston rod surface quality is maximized by the hard chrome-plating and polishing to a 0.2 μm finish. Under the rated pressure, the piston and piston rod assembly features high tensile strength on the smallest surface.
Cylinder head & cylinder cap fixing plate
First, cylinder head & cylinder cap is connected to a thick steel flange with screws. Then, the flange is fixed on the both ends of the cylinder tube by screw thread.
Thick walled cylinder is ground and polished to a very high surface finish, so that the friction coefficient is small, which maximizes the seal life.
Cylinder head & cylinder cap end
Cylinder head and cylinder cap is manufactured with high quality steel. The cylinder head is installed in the cylinder, providing added strength to the cylinder. The joint of the cylinder head, cylinder cap and cylinder tube is designed with an O-ring supported by an anti-extrusion ring, giving excellent sealing effect.
Designed with cushioning, the noise and shock loading can be greatly reduced, resulting in a faster cycle times and higher working efficiency. The cylinder speed can also gradually decrease due to the cushions at the cylinder head and cylinder cap. The cylinder head end cushion features a self-centering design. What's more, the polished cap end spear is an integral part of the piston rod.
Piston rod guide sleeve
Piston rod seal includes a heavy load polymer support ring resisting side loading is installed in the steel guide sleeve assembly. The large support ring area can be separated from the rod seal, so that the supporting stress achieves to the minimum, therefore maximizing the support ring life. The support ring and rod seal is easy to replace after removing the guide sleeve.
Piston rod seal
Piston rod seal is provided with a cartridge type guide sleeve, giving a reliable sealing effect. The rod seal prevents the contaminants from entering the cylinder. With the cartridge design, easy and quick maintenance is realized.
Different piston seals are available to meet different working conditions, including standard seal, V-shaped sealing, low - friction seal, zero leakage sealing, and heavy load sealing piston. Special seals can be customized upon request.
Cylinder tube end seal
In order to ensure zero leakage of the cylinder, seal and guide sleeve on the cylinder tube end and cylinder head seal adopt radial sealing and are designed with a retaining ring, ensuring high sealing effect.
Hoyo is more than a hydraulic cylinder supplier, we are your highly customized and cost-effective motion solutions partner. With a dedicated team of quality, manufacturing, and engineering professionals in the field of hydraulic system, we are ready to support you in exceeding your requirement and expectations from hydraulic cylinder design to manufacturing. As a hydraulic motor, the cylinders are widely used in the construction equipment, manufacturing machinery, and mining equipment, etc. If you are looking for a custom cylinder manufacturer, Hoyo is your right choice in terms of reliability, on-time delivery, and customer satisfaction!