A: As a direct OEM manufacturer, Dongte produces hard chrome-plated piston rods that act as the core power component of hydraulic cylinders. Available in diameters from 20mm to 300mm and premium materials like CK45 and 42CrMo4, our rods feature precise ISO f7/f8 tolerances, a minimum 20um chrome layer, and excellent 120-hour NSS corrosion resistance. We supply induction-hardened and quenched options for your global bulk procurement needs.
The piston rod is the core component of a hydraulic cylinder.
Mounted inside the hydraulic cylinder and connected to the piston.Responsible for converting hydraulic power into thrust/pull force
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Piston Rods / Hard Chrome Plated Rods |
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Diameter: 20 - 300 mm |
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Material: JIS S45C, SAE1045, DIN CK45, EN C45E, ASTM 1045, 42CrMo4, AIS1414020MnV6, AISI431 |
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Tolerance: ISO f7, f8 |
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Chrome Layer Thickness: min. 20 um |
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Surface Roughness: max. 0.2 um |
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Surface Hardness: min. HV 850 |
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Straightness: max. 0.2/1000 mm |
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Roundness: Half of the diameter tolerance |
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Material |
C% |
Mn% |
Si% |
S% |
P% |
V% |
Ni(%) |
Cr% |
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CK45 |
0.42-0.50 |
0.50-0.80 |
≤ 0.40 |
≤ 0.035 |
≤ 0.035 |
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42CrMo4 |
0.38-0.45 |
0.60-0.90 |
0.15-0.40 |
≤ 0.03 |
≤ 0.03 |
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0.90-1.20 |
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20MnV6 |
0.16-0.22 |
1.30-1.70 |
0.10-0.50 |
≤ 0.035 |
≤ 0.035 |
0.10-0.20 |
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431 |
0.12-0.22 |
≤ 1.5 |
≤ 1 |
≤ 0.03 |
≤ 0.04 |
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1.5-2.5 |
15-17 |
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Delivery Condition |
Hard Chrome Plated, Induction Hardened, Quenched & TemperedInduction Hardened with Q+T |
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Corrosion Resistance |
Min. 120 hours NSS Rating 9 (ISO 9227) |
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Surface Hardness of Induction Hardened |
55-60 HRC |
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Depth of Induction Hardened |
1.2 – 2.5 mm |
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Package |
Carboard Tubes; Recyclable Plastic Sleeves; Wooden cases |
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