Chrome Plated Steel Bars for Hydraulic Cylinders
High-Performance Piston Rod Solution | 5 Key Advantages | Industry-Proven Reliability
The preferred piston rod material for hydraulic systems, combining exceptional durability with cost efficiency. Engineered for demanding applications across multiple industries.
1
Exceptional Hardness & Wear Resistance
- 50-80μm hard chrome coating with HV 800-1200 hardness (3-5× regular steel)
- Wear ≤0.005mm after 500,000 cycles vs ≥0.03mm for uncoated 45# steel
- Withstands 20MPa+ working pressures in construction machinery
2
Low Friction & Precision Performance
- Surface roughness Ra≤0.4μm with PTFE/PU seals
- Friction coefficient 0.02-0.05 reduces system energy loss by 15%
- Enables ±0.1mm control accuracy in servo hydraulic systems
3
Superior Corrosion Resistance
- Porosity ≤1/cm² (80μm plating) with Cr₂O₃ passivation film
- Corrosion rate <0.001mm/a in ISO VG 46 oil (vs 0.005mm/a for nitriding steel)
- Resists rust in hydraulic oil with ≤0.1% water content
4
Cost-Effective Manufacturing
- 30-50% lower cost vs carbide/ceramic alternatives
- Example: φ50mm×1000mm rod: ¥200 (chrome) vs ¥500+ (ceramic)
- Adjustable thickness + re-chroming capability extends service life
5
Extreme Condition Adaptability
High Temperature
>95% hardness retention at 150°C (die-casting/metallurgy)
Marine Use
10+ year lifespan in 3.5% salt spray
Dusty Environments
Rz 6-10μm surface stores oil to reduce abrasive wear
Industry Applications
Construction
Excavators, Cranes
Industrial
Injection Molding, Extruders
Automotive
Lift Cylinders, Dump Trucks
The optimal piston rod solution for high-load, long-life hydraulic systems
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Learn more at: www.chennamachinery.com
