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Hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and does linear reciprocating motion (or swing motion).The hydraulic cylinder is basically composed of cylinder and cylinder head, piston and piston rod, sealing device, buffer device and exhaust device.
First, large-diameter cylinders have larger inner diameters and strokes, allowing them to withstand larger pressures and loads. It is usually made of high-strength materials such as cast iron, steel, etc. to ensure the stability and durability of its structure. This characteristic enables large-diameter cylinders to withstand high-intensity working environments, such as heavy machinery and equipment, pressure machinery, lifting equipment, etc.Secondly, large-diameter cylinders have excellent sealing performance. It uses high-quality seals, such as sealing rings, gaskets, etc., to ensure that the liquid inside the cylinder will not leak. This characteristic makes large-diameter cylinders suitable for applications with high sealing requirements, such as hydraulic systems, hydraulic machinery, etc.In addition, large-diameter cylinders also have high precision and stability. It is precision machined and assembled to ensure accuracy and stability during its working process. This characteristic enables large-diameter cylinders to maintain good working results under high-speed, high-load and high-frequency working conditions, such as stamping machinery, injection molding machinery, etc.| Speci -cation | Grade | Chemical Composition [%] | ||||||||||||||
| C | Mn | P | S | Si | Cr | Mo | Cu | Ni | V | |||||||
| Min | Max. | Min | Max. | Max. | Max. | Min. | Max | Min. | Max | Min. | Max | Max | Max | Max | ||
| ASTM A192 | 0.06 | 0.18 | 0.27 | 0.63 | 0.035 | 0.035 | - | 0.25 | - | - | - | - | - | - | - | |
| ASTM A210 | A-1 | - | 0.27 | - | 0.93 | 0.035 | 0.035 | 0.1 | - | - | - | - | - | - | - | - |
| C | - | 0.35 | 0.29 | 1.06 | 0.035 | 0.035 | 0.1 | - | - | - | - | - | - | - | - | |
| ASTM A213 | T-11 | 0.05 | 0.15 | 0.3 | 0.6 | 0.025 | 0.025 | 0.5 | 1 | 1 | 1.5 | 0.44 | 0.65 | - | - | - |
| T-12 | 0.05 | 0.15 | 0.3 | 0.61 | 0.025 | 0.025 | - | 0.5 | 0.8 | 1.25 | 0.44 | 0.65 | - | - | - | |
| T-22 | 0.05 | 0.15 | 0.3 | 0.6 | 0.025 | 0.025 | - | 0.5 | 1.9 | 2.6 | 0.87 | 1.13 | - | - | - | |
| ASTM A335 | P-11 | 0.05 | 0.15 | 0.3 | 0.6 | 0.025 | 0.025 | 0.5 | 1 | 1 | 1.5 | 0.44 | 0.65 | - | - | - |
| P-12 | 0.05 | 0.15 | 0.3 | 0.61 | 0.025 | 0.025 | - | 0.5 | 0.8 | 1.25 | 0.44 | 0.65 | - | - | - | |
| P-22 | 0.05 | 0.15 | 0.3 | 0.6 | 0.025 | 0.025 | - | 0.5 | 1.9 | 2.6 | 0.87 | 1.13 | - | - | - | |
| BS 3059 Pt I | 320 | - | 0.16 | 0.3 | 0.7 | 0.04 | 0.04 | 0.1 | 0.35 | - | - | - | - | - | - | - |
| BS 3059 Pt II | 622-490 | 0.08 | 0.15 | 0.4 | 0.7 | 0.03 | 0.03 | - | 0.5 | 2 | 2.5 | 0.9 | 1.2 | - | - | - |
| DIN 1629 | St- 37.0 | - | 0.17 | - | - | 0.04 | 0.04 | - | - | - | - | - | - | - | - | - |
| St - 52 | - | 0.22 | - | - | 0.04 | 0.035 | - | - | - | - | - | - | - | - | - | |
| DIN 17175 | St - 35.8 | - | 0.17 | 0.4 | 0.8 | 0.04 | 0.04 | 0.1 | 0.35 | - | - | - | - | - | - | - |
| St - 45.8 | - | 0.21 | 0.4 | 1.2 | 0.04 | 0.04 | 0.1 | 0.35 | - | - | - | - | - | - | - | |
| Speci -cation | Grade | Mechanical Properties | |||||
| Yield Strength | Tensile Strength | % Elongation (G.L. 50 mm WT 8 mm) e (min.) | |||||
| Min. | Min. | ||||||
| PSI | MPa | PSI | MPa | ||||
| ASTM A179 | - | 26,000 | 180 | 47,000 | 325 | 35 | |
| ASTM A192 | 26,000 | 180 | 47,000 | 325 | 35 | ||
| ASTM A210 | A-1 | 37,000 | 255 | 60,000 | 415 | 30 | |
| C | 40,000 | 275 | 70,000 | 485 | 30 | ||
| ASTM A213 | T-11 | 30,000 | 205 | 60,000 | 415 | 30 | |
| T-12 | 32,000 | 220 | 60,000 | 415 | 30 | ||
| T-22 | 30,000 | 205 | 60,000 | 415 | 30 | ||
| ASTM A335 | P-11 | 30,000 | 205 | 60,000 | 415 | 30 | |
| P-12 | 32,000 | 220 | 60,000 | 415 | 30 | ||
| P-22 | 30,000 | 205 | 60,000 | 415 | 30 | ||
| BS 3059 Pt I | 320 | 28,000 | 195 | 46,000 | 320 | 69,500 | |
| BS 3059 Pt II | 622-490 | 40,000 | 275 | 71,000 | 490 | 93,000 | |
| DIN 1629 | St- 37.0 | WT 16mm = 235 WT>16mm = 225 | 350 | - | |||
| St - 52 | WT 16mm = 355 WT>16mm = 345 | - | Long 21 Trans 19 | ||||
| DIN 17175 | St - 35.8 | WT 16mm = 235 WT>16mm = 225 | 360 | 480 | |||
| St - 45.8 | WT 16mm = 255 WT>16mm = 245 | 410 | 530 | ||||
Our product range | Large diameter hydraulic cylinder | |
Hydraulic pump parts | Cylinder block | Press pin |
Piston motor | Piston shoe | Snap ring |
Piston pump | Retainer plate | Coil spring |
Gear pump | Ball guide | Disk spring |
Charge pump | Valve plate | Barrel washer |
Pilot pump | Shoe plate | Oil seal |
Vane pump | Bearing plate | Frication plate |
Repair OEM parts | Swash plate | Steel plate |
Motor spare parts | Drive shaft | Metal |
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