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This piston rod is engineered with a robust hard chrome coating to perform under extreme working conditions found in heavy machinery like excavators, loaders, and bulldozers.
The product is made from black steel bar, machined to high accuracy through peeling and grinding, then coated with a uniform hard chrome layer and polished to Ra0.20μm. The f7 tolerance and 0.2/1000mm straightness allow perfect alignment in hydraulic cylinders, preventing seal wear and oil leakage.
Designed for high load and impact resistance, this piston rod ensures smooth operation even in harsh, abrasive environments. Whether used in construction, mining, or material handling equipment, it delivers consistent performance, exceptional durability, and minimal downtime.
It also supports OEM/ODM customization to meet specialized application requirements.
Features:
1. High precision.
2. Made by best raw material.
3. Quality stable and uniformity.
4. Better packing protection.
5. Perfect after-sales service
Hard Chrome Plated Piston Rod:
Steel Grade | CK45, SAE1045, 4140, 4340, JIS45C, 40Cr, 20MnV6, 42CrMo4, SUS304/316 Duplex 2205, etc. |
Diameter | Φ 6-500mm |
Tolerance | ISO f7 |
Length | 4m, 5.8m, 6m, 7.5m, 12m, 14m can be choose |
Roughness | max. Ra0.20µm (statistic average: 0.05 - 0.15µm) |
Straightness | <= 0.2/1000 |
Roundness | Half of the tolerance ISO f7 |
Hardness based on Delivery condition | Normal chrome rod (HRC 15-22) Q+T chrome rod (HRC 28-35) Induction Hardened chrome rod (HRC 55+/-2) Q+T and Induction hardened chrome rod (HRC 55+/-2) |
Chrome Thickness | 20-80µm |
Chrome Hardness | min. 900 HV (0.1) |
Declaration of conformity | According to EN 10083-2 Test in natural salt spray according to ASTM B 17 (96/120/150/200H). |
Packing | Oil soaked, carton pipe sheathed, cotton rope twined, bubble film packaged. |
