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Hard Chrome Plated Motor Shaft

Precision Shaft for Electric Motors & AutomationProduct
The hard chrome plated motor shaft is a high-strength shaft product that has been precisely machined and coated with a layer of hard chromium. This surface treatment significantly enhances the shaft’s wear resistance, surface hardness, and corrosion protection. It is widely used in motors operating under high speed, heavy load, and long service life conditions, especially in environments that demand high surface quality and dimensional precision.

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Description

Hard Chrome Plated Motor Shaft

Key Features

High Surface Hardness: After hard chrome plating, the surface hardness reaches HRC 60~70, offering excellent wear resistance.

Excellent Corrosion Resistance: The chrome layer provides strong protection against rust and oxidation, ideal for harsh environments.

Smooth Surface Finish: Mirror-polished surface achieves Ra0.2–0.4μm, minimizing friction.

High Dimensional Accuracy: Tight tolerances maintained before and after plating, typically ±0.005mm or better.

Strong Adhesion: Advanced plating techniques ensure strong bonding between chrome layer and base metal.

Customizable Design: Available in various diameters, lengths, keyways, threads, and end machining per customer drawings.

Manufacturing Process

Material Selection: High-quality alloy steel, carbon steel (e.g., 45#), or stainless steel (e.g., SUS304/SUS420).

Rough Machining: Turning, milling, and drilling to form the base shape.

Heat Treatment (Optional): Quenching or tempering to increase core strength and toughness.

Precision Grinding: Using centerless or cylindrical grinding for superior dimensional accuracy.

Hard Chrome Plating: Electroplating a chrome layer (10–50μm thickness) for surface hardness and corrosion resistance.

Polishing: Final mirror polishing to enhance smoothness and uniformity.

Inspection & Testing: Full quality control covering dimensions, plating thickness, hardness, adhesion, and visual appearance.

Typical Applications

Electric Motors (AC/DC): Used as rotor shafts or output shafts, ensuring stable performance and long service life.

Automation Equipment: Applied in conveying systems, coiling mechanisms, and servo-driven assemblies.

Hydraulic & Pneumatic Systems: Suitable for actuator connections requiring high durability.

Printing & Packaging Machines: Ensures smooth high-speed operation with minimal friction.

Textile Machinery: Performs reliably in humid or corrosive environments.

Agricultural & Construction Equipment: Withstands mud, dust, and outdoor exposure.

Power Tools: Used in electric drills, saws, and compact motors.

Standard Specifications (Customizable)

Parameter	Value
Diameter Range	Ø4mm – Ø100mm
Length Range	50mm – 3000mm
Chrome Layer Thickness	10μm – 50μm
Surface Hardness	HRC 60 – 70
Surface Roughness	Ra 0.2 – 0.4μm
Diameter Tolerance	±0.005mm – ±0.01mm
Base Materials	45# steel, SUS304, SUS420, 40Cr, etc.