Stainless Steel Optical Encoder Disc Precision etching encoder Code Wheel

Stainless Steel Encoder Disc Optical Precision Grating Code Wheel

Product Details

Encoder Disc is the core precision component of rotary encoders. With precision optical/magnetic patterns engraved on its surface, it rotates synchronously with the shaft. By detecting pattern changes via sensors, it converts angular displacement into electrical signals, achieving high-precision measurement of position, speed and direction. It is widely used in automated motion control systems.

Main Types

Optical Encoder Disc (Mainstream)- Transmission type: Glass/PC substrate with alternating transparent and opaque areas, generating pulses through light penetration.
- Reflection type: Metal/coated substrate with high-reflection and light-absorption areas, detecting changes in reflected light.
- Magnetic Encoder Disc: Steel base with magnetic coating, magnetized with regular N-S poles. Works with Hall sensors, featuring strong vibration resistance and oil tolerance.

Borosilicate Glass: Excellent thermal stability, highest precision, ideal for high-end equipment.
- Metal (Stainless Steel/Aluminum): High strength, shock-resistant, suitable for heavy-duty industrial applications.
- Polymer (PC/PET): Lightweight and cost-effective, commonly used in consumer electronics and small motors.
- Ceramic/Composite: Ultra-low thermal expansion, for ultra-high precision and extreme temperature environments.

- Resolution: 100–65536 PPR (Pulses Per Revolution), standard 1000–2000 PPR
- Diameter: 10–300mm, customizable
- Accuracy: ±1′ – ±30″ (arcminutes/arcseconds)
- Rotation Speed: Up to 5,000–12,000 RPM
- Operating Temperature:- Glass/Metal: -40°C to +120°C
- Polymer: -20°C to +80°C
- Pattern Precision: Line width ±0.003mm, concentricity ≤0.005mm

Core Features

1. High Precision: Photolithography/laser etching ensures accurate patterns and minimal repeat positioning error.
2. High Reliability: Anti-aging, temperature-stable glass/metal materials, long service life with low maintenance.
3. Stable Signal: High SNR for optical type; strong anti-interference for magnetic type, suitable for harsh environments.
4. High Customization: Resolution, diameter, pattern (incremental/absolute) can be customized.
5. Good Compatibility: Supports TTL/differential signals, compatible with mainstream encoders and control systems.

Customization Service

- Materials: Glass, stainless steel, aluminum, PET, PC
- Resolution: 100–65536 PPR customizable
- Size: Diameter 10–300mm, custom bore size
- Patterns: Incremental, absolute, hybrid (incremental + zero index)
- Coatings: High-reflection, high-transmission, light-blocking coatings for different wavelengths

Packaging Specification

-Single Product Package:

Custom EPE foam inner box + anti-static bag, compact and portable, suitable for single piece shipment and storage.

- Bulk Package: Multiple single packaged products placed in a unified large high-strength corrugated carton, with partitions between each product to avoid mutual extrusion; the number of products per carton can be customized according to customer requirements.

- Carton Size: Customized according to the diameter and quantity of encoder discs (conventional sizes: 15cm×15cm×5cm, 20cm×20cm×6cm, 30cm×30cm×8cm), with optimized space utilization to reduce transportation costs.

About us 

For over 13 years Xinhaisen has pioneered developments in photochemical etching, achieving standards admired by the industry and appreciated by a global customer base from a wide range of high-tech engineering markets.

Since found in 2012, in affiliating with our customers we have pioneered many new production techniques and methodologies in order to better serve their needs. It is these techniques that have advanced our capabilities further, enabling us to take what was once considered art and turn it into a science.

Now, we became China's leading photochemical etching specialist, with also the capacity of offering stamping and laser-cutting service. Our products include etching bipolar plates for fuel cell, speaker grills, micro meshes&filters, tea&coffee infusers, shims&gaskets, Optical encoderdisk&strip, EMI/RFI shielding, Leadframes, connectors&contacts, printingstencils&foils and metal crafts.

Quality and service is our mission, Xinhaisen is committed to pursuing the highest standards of environmental performance. Responsibility for sustainability resides with all employees. The company has achieved ISO 14001 and IS0 9001 and IATF 16949 and is committed to maintaining that standard. With a fast response, high quality, best service and fair price, we have gained high reputation from our customers all over the world.