Induction Hardened Chrome Plated Round Bars for Hydraulic Cylinders — Solving OEM Pain Points

Hydraulic and pneumatic cylinders rely heavily on hard chrome plated rods or induction hardened chrome plated round bars. But in demanding applications such as construction, mining, or agriculture, OEMs face serious challenges that reduce system performance and increase costs.

Pain Points in Piston Rod Applications

1. Premature rod bending under heavy load
Standard hard chrome plated rods often lack the core hardness and fatigue resistance to withstand shock loads, causing bending or deformation.

2. Surface damage and wear
Inadequate hardening depth or thin chrome plating leads to surface scratches, galling, and wear, reducing service life and damaging seals.

3. Corrosion in harsh environments
Exposure to rain, fertilizers, or salt spray causes pitting and rust, shortening the rod’s lifespan.

4. Short rod life in high-cycle applications
Without proper induction hardening, piston rods fatigue quickly under continuous motion, leading to early replacement and downtime.

Golden Asia’s Induction Hardened Chrome Plated Round Bars

Dual Strength:

• Surface hardness: HRC 55° ± 2°
• Hardened depth : 0.5mm – 1.5mm
• Delivers both surface wear resistance and core toughness to withstand heavy shock loads.

Superior Chrome Plating

• Hard chrome thickness: 20–30 μm (customizable)
• Surface roughness: Ra ≤ 0.2 μm for smoother seal contact
• Protects against wear and extends seal life.

Corrosion Protection Options

• Standard rods tested up to NSS 96–120 hours
• Advanced coating options available for NSS 500–1000 hours (marine and agricultural use)

Geometric Precision

• Straightness: 0.2/1000 mm
• Roundness: tolerance × 1/2

Material Range

• Standard: JIS S45C, S55C, 20MnV6, 38MnVS6
• High-strength alloy: 42CrMo4 / SAE 4140 for fatigue resistance
• Custom grades available on request

Why OEMs Choose Golden Asia

• Reduced downtime thanks to rods built for heavy-duty cycles
• Lower replacement costs with extended fatigue and corrosion resistance
• Global compatibility (DIN, ASTM, JIS standards available)
• Customization: diameters up to 800 mm