Custom Etched Encoder Discs for Servo Motors, Robotics, Medical Devices & Automotive Sensors

Product Overview

Encoder discs (code wheels) are precision optical or magnetic components used to convert mechanical motion into electrical signals. Xinhsen’s etched encoder discs offer high uniformity, fine pitch accuracy, and burr‑free edges, ensuring reliable signal output for motion control systems.

What is Etching?

Etching (photochemical machining) is a subtractive manufacturing process that uses chemical solutions to selectively remove material from a metal sheet. Key benefits include:

• No burrs or mechanical stress

• No tool wear

• Low‑cost design changes

• High precision for complex, fine patterns

Product Features

• High precision – Positioning accuracy up to ±0.01mm, uniformity ±0.03mm

• Fine pitch capability – Minimum line width 0.015mm, minimum hole diameter 0.03mm

• Burr‑free & stress‑free – No deformation or edge roughness

• Wide thickness range – 0.05mm to 0.4mm

• Material flexibility – Stainless steel, beryllium copper, brass, nickel‑silver, etc.

• Custom patterns – Slots, windows, incremental or absolute code tracks

Product Specifications

Applications

• Optical encoders – Rotary and linear encoders for motion feedback

• Medical devices – Precision positioning systems

• Automotive – Steering angle sensors, throttle position sensors

• Industrial automation – Servo motors, CNC machinery, robots

• Aerospace & transportation – High‑reliability motion control

• Consumer electronics – Printers, scanners, camera focus mechanisms

Our Advantages

• High speed & flexibility – Rapid prototyping and mass production support

• Excellent quality – ±0.03mm uniformity ensures stable signal waveforms

• Wide material & thickness range – One‑stop solution for different encoder designs

• Competitive pricing – No tooling costs for complex patterns

• Proven reputation – Trusted by customers in optics, automotive, and medical sectors

FAQ

• Q1: What is the minimum slot width for an encoder disc?
  A: 0.015mm for thin materials (e.g., 0.05mm stainless steel). For thicker materials, please consult our engineers.
• Q2: Can you make incremental and absolute encoder patterns?
  A: Yes. We can produce both types with high positional accuracy.
• Q3: Is etching better than stamping or laser cutting for encoder discs?
  A: Etching gives burr‑free, stress‑free edges with no heat‑affected zone, ideal for fine‑pitch encoder discs where signal precision is critical.
• Q4: Do you offer design assistance?
  A: Yes. We help optimize your pattern for manufacturability and performance.
• Q5: What is your typical lead time for prototypes?
  A: 5–7 working days, depending on complexity and material.
• Q6: Do you accept small quantity orders?
  A: Yes. No minimum order quantity (MOQ) for prototype or small batch runs.

Welcome to contact us at any time!