SAE1045 ST52 Hollow Piston Rod for Hydraulic Cylinders
Release time:
2026-08-19
1. Product Overview
Our SAE1045 & ST52 hollow piston rod is a lightweight, high-rigidity hydraulic component specially engineered for standard and telescopic hydraulic cylinder systems. Different from traditional solid piston rods, this hollow structure features uniform wall thickness, excellent torsional resistance and optimized material utilization. Manufactured from premium SAE1045 carbon steel and ST52 low-alloy steel, the rod undergoes precision seamless tube processing, surface grinding and hard chrome plating. It balances lightweight design and structural stability, effectively reducing cylinder overall weight while maintaining high load-bearing capacity. Widely adopted in construction machinery, industrial hydraulic equipment, telescopic cylinders and general hydraulic transmission systems, it is an ideal cost-effective upgrade for standard hydraulic piston rods.
2. Material & Structural Advantages
Available in two mainstream grades, SAE1045 and ST52, this hollow piston rod covers diverse industrial working conditions. SAE1045 steel delivers high surface hardness and stable wear resistance after heat treatment, suitable for medium-load and high-frequency reciprocating scenarios. ST52 low-alloy steel features outstanding toughness, excellent ductility and stable mechanical properties, performing excellently under impact load and variable pressure working environments. The professional hollow annular structure provides stronger torsion resistance than solid rods with the same cross-sectional area, while greatly reducing self-weight and material consumption. It effectively lowers hydraulic cylinder operating inertia, improves system response efficiency and avoids bending deformation during long-term operation.
3. Surface Treatment & Performance Features
All hollow piston rods adopt ultra-precision outer circle grinding and uniform hard chrome plating treatment. The polished outer surface achieves ultra-low roughness, minimizing friction coefficient during reciprocating movement and reducing wear on oil seals, guide sleeves and matching hydraulic accessories. The dense and adhesive chrome layer provides reliable anti-rust, anti-oxidation and anti-corrosion performance, resisting dust, moisture and mild industrial corrosion. Compared with ordinary untreated hollow rods, our products feature longer service life, lower maintenance frequency and more stable sealing performance, ensuring continuous and efficient operation of hydraulic cylinder assemblies.
4. Core Technical Parameters
Inspection Item | Technical Specifications |
|---|---|
Optional Material | SAE1045 / ST52 Low Alloy Steel |
Surface Treatment | Hard Chrome Plated + Precision Ground |
Chrome Layer Thickness | 20μm |
Surface Roughness | Ra ≤ 0.2μm |
Dimensional Tolerance | ISO f7 / f8 / Custom Precision |
Chrome Hardness | HV 800 – 1000 |
Straightness | ≤ 0.05mm/m |
Custom Range | Diameter, Length, Wall Thickness, End Processing |
5. Customization & Quality Assurance
We support full personalized OEM & ODM customization services for hollow piston rods. Customers can customize outer diameter, inner hole size, wall thickness, overall length, thread processing, chamfer and special end structures according to drawings or samples. We accommodate small-batch prototype orders and large-scale bulk supporting orders for equipment manufacturers. Each product undergoes strict multi-channel inspection, including dimensional tolerance detection, straightness testing, surface defect screening and chrome layer thickness verification. Standardized quality control ensures consistent batch stability and zero defective delivery.
6. Application Scenarios
This SAE1045 & ST52 hollow piston rod is widely applicable to various hydraulic system equipment. It is the core accessory for telescopic hydraulic cylinders, engineering machinery cylinders and industrial hydraulic press cylinders. It also perfectly matches agricultural machinery, environmental protection equipment, logistics lifting equipment and general industrial hydraulic transmission systems. The lightweight and high-rigidity design makes it especially suitable for equipment requiring flexible response and stable long-term operation.
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