Copper Etching Custom Service Etched Encoder Disc for Optical Sensor

Copper Etching Custom Service Etched Encoder Disc for Optical Sensor

What is a Copper Etched Encoder Disk?

Except Copper, What Materials We Use

We manufacture metallic encoder disks using high-quality materials to ensure stability, durability, and excellent corrosion resistance:

Specifications of Copper Etched Encoder Disk

How Copper Etched Encoder Disc Works

1. The disk is mounted on a rotating shaft

2. As it spins, light (optical encoder) or magnetic/electrical sensors detect the etched patterns

3. The encoder converts these signals into data such as:

• Rotation angle
• Speed (RPM)
• Direction of movement

Common Applications of Copper Etched Encoder Disc

• Industrial rotary encoders

• Servo motors & stepper motors

• Robotics and automation systems

• CNC machinery

• Medical and precision instruments

• Aerospace & defense positioning systems

Why Copper?

Copper is often chosen because it offers:

• Excellent electrical conductivity

• Good dimensional stability in thin gauges

• Easy, precise etching for fine features

• Cost-effective production for complex geometries

It’s especially suitable for photo-etched encoder disks with very fine line widths.

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Why photochemical etching?

Photochemical etching allows:

• Burr-free and stress-free edges

• Extremely fine features (down to tens of microns)

• No tool wear (unlike stamping or laser cutting)

• High repeatability for mass production

This is critical for encoder accuracy.

Customization & OEM Service

We support custom metallic encoder disks based on your CAD drawings or design files (DWG, DXF, AI, PDF).
Our engineering team will assist in optimizing your design for etching efficiency and precision.

Send us your drawings or specifications today for a detailed quotation and free DFM evaluation.