Steel rod

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Product Overview
The CK45 Chrome Plated Rod Induction And Hardened (HRC 50–62) is a precision hydraulic cylinder rod engineered for heavy‑duty mobile and industrial equipment. Manufactured from CK45 medium carbon steel, it features induction hardening and a hard chromium surface to deliver superior wear resistance, high load capacity and long operational life in demanding environments.

Key Features / Advantages

• Surface Hardness HRC 50–62: Induction hardening produces a hardened surface layer for improved wear and fatigue resistance.
• Hard Chromium Plating: Provides corrosion protection, low friction and resistance to pitting.
• High Fatigue Strength: Hardened surface withstands heavy loads and cyclic stresses typical of hydraulic systems.
• Precision Dimensions: Centerless grinding and plating ensure tight tolerances for reliable sealing and piston guidance.
• Extended Service Life: Reduced surface wear lowers downtime and maintenance costs.
• Multi‑industry Use: Suitable for construction, mining, oil & gas, agriculture, material handling and marine applications.

Production Process

• Material Selection: CK45 steel inspected for chemical composition and quality.
• Rough Machining: Turning and peeling to required blank dimensions.
• Heat Treatment: Normalizing and tempering for internal toughness.
• Induction Hardening: High‑frequency induction heating and quenching create a hardened surface layer (HRC 50–62).
• Precision Grinding: Centerless grinding to final diameters and tolerances.
• Chrome Plating: Uniform hard chromium deposition to improve corrosion and wear resistance.
• Polishing: Mirror finish with typical roughness ≤ Ra 0.2 μm.
• Quality Inspection: Dimensional, hardness and surface checks before packing.

Applications

• Hydraulic cylinders for excavators, loaders, bulldozers and cranes.
• Pneumatic cylinders and industrial automation equipment.
• Construction and mining machinery (arms, stabilizers, hydraulic supports).
• Agricultural equipment: tractors, harvesters and hydraulic implements.
• Marine & offshore: shipboard cranes, drilling rigs and subsea systems.
• Material handling: forklifts, lifts and hydraulic presses.

Factory Stock & Availability
Standard diameters and lengths are kept in stock for immediate shipment. Custom diameters, lengths (up to 15 m) and specific tolerances are available with short lead times via high‑capacity production lines and streamlined logistics.

Quality Inspection & Certificates

• Chemical analysis (spectrometer) to confirm CK45 composition.
• Hardness testing (Rockwell) to verify surface HRC 50–62.
• Salt spray testing for chrome plating corrosion resistance.
• Non‑destructive ultrasonic testing for internal defects.
• Straightness control ≤ 0.2 mm / 1000 mm.
• Surface inspection for cracks, pitting or plating defects.
• Certificates: ISO 9001:2015, EN 10204 mill certificates (3.1/3.2), test reports for hardness and mechanical properties; third‑party inspection available.

Technical Specifications

• Model: Induction And Hardened
• Brand: EASTAI
• Material: CK45 (medium carbon steel)
• Surface Treatment: Hard chromium plating + induction hardening
• Surface Hardness: HRC 50–62
• Maximum Length: 15 m
• ID Tolerance: f7 / f8 / g6, etc.
• Straightness: ≤ 0.2 mm per 1000 mm
• Surface Roughness: ≤ 0.2 μm (Ra)
• Packing: Anti‑rust oil on rod surface; each rod packed in paper roll and wooden case; customizable on request
• Primary Application: Hydraulic cylinders for mobile equipment, industrial machinery and heavy‑duty systems