CK45 ISO F7 Hard Chrome Bar For Hydraulic Cylinder
Release time:
2026-08-19
1. Product Overview
CK45 ISO F7 hard chrome bar is a high-precision, wear-resistant solid piston rod specially manufactured for standard hydraulic cylinder systems. Adopting premium CK45 medium carbon steel as raw material, the bar undergoes precision cylindrical grinding and uniform hard chrome plating, strictly compliant with ISO F7 tolerance standard. It features high surface hardness, low friction coefficient and excellent structural stability, effectively solving common problems such as seal wear, surface rusting and dimensional deviation during high-frequency reciprocating operation. As a mainstream cost-effective hydraulic component, it is widely used in industrial hydraulic cylinders, construction machinery and general hydraulic equipment.
2. Material & Performance Advantages
CK45 steel is a widely recognized high-quality structural steel for hydraulic parts, with balanced hardness and toughness after heat treatment. It avoids bending deformation and fatigue damage under long-term medium-load operation. Combined with strict ISO F7 precision tolerance control, the rod achieves perfect matching with cylinder seals and guide sleeves, ensuring tight sealing and stable hydraulic transmission. The integrated hard chrome coating greatly enhances surface wear resistance and corrosion resistance, adapting to conventional industrial environments with dust, humidity and slight oxidation.
3. Core Technical Parameters
Item | Specification |
|---|---|
Material | CK45 Carbon Steel |
Tolerance Standard | ISO F7 Precision |
Surface Treatment | Hard Chrome Plated & Precision Ground |
Surface Roughness | Ra ≤ 0.2μm |
Chrome Hardness | HV 800–1000 |
Straightness | ≤ 0.05mm/m |
4. Customization & Quality Control
We support customizable length, diameter and end face processing to meet diverse hydraulic cylinder assembly needs. All CK45 hard chrome bars are fully inspected before delivery, including dimensional tolerance detection, surface roughness test and hardness inspection. Strict ISO standard production ensures consistent product accuracy and stability, supporting OEM bulk orders and customized processing.
5. Application
This ISO F7 CK45 hard chrome bar is ideal for standard hydraulic cylinders, lifting machinery, automated equipment and general industrial hydraulic systems. It delivers stable reciprocating performance, reduces equipment maintenance costs and extends the service life of hydraulic cylinder assemblies.
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