Pattern Track: Diameter 20mm to 200mm

Q: What is the difference between incremental and absolute pattern tracks?

Incremental tracks have evenly spaced segments for relative position measurement, while absolute tracks have unique patterns (e.g., Gray code) for exact position without reference.

Q: How does environmental contamination affect pattern track performance?

Dust or moisture on optical tracks can scatter light, causing signal errors; magnetic tracks are more resistant but require protection from ferrous debris.

Component Specifications

Definition

A Pattern Track is a precisely manufactured optical or magnetic pattern on a code disc used in rotary encoders to convert angular position into digital signals. It consists of alternating transparent/opaque segments or magnetic poles arranged in concentric circles, enabling absolute or incremental position measurement through photoelectric or magnetic sensing.

Working Principle

The pattern track works by interrupting or modulating light (in optical encoders) or magnetic fields (in magnetic encoders) as the disc rotates. A light source and photodetector pair or magnetic sensor detects the pattern transitions, generating electrical pulses that correspond to angular displacement. The track's resolution depends on the number of segments per revolution.

Materials

Optical: Glass or polycarbonate substrate with chromium or photoresist coating. Magnetic: Ferromagnetic alloys (e.g., steel) with magnetized regions. High-grade materials ensure thermal stability and durability.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Accuracy	±1 arc-minute to ±10 arc-seconds
Diameter	20mm to 200mm
Resolution	100 to 10,000 pulses per revolution
Track Type	Incremental, absolute, or hybrid
Linearity Error	<0.1% of full scale
Operating Temperature	-10°C to 85°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 16063, DIN 43700

Parent Products

This component is used in the following industrial products

Code Disc

A rotating disc with optical or magnetic patterns used to convert angular position into digital signals.

View Product Details

Engineering Analysis

Risks & Mitigation

Signal degradation due to contamination
Mechanical wear causing pattern damage
Thermal expansion affecting accuracy
Misalignment during installation

FMEA Triads

Trigger: Contamination (dust, oil) on optical track surface
Failure: Reduced signal amplitude or false pulses
Mitigation: Use sealed encoder housings, regular cleaning, or switch to magnetic encoders in dirty environments

Trigger: Mechanical stress from shaft misalignment
Failure: Track deformation or disc wobble, leading to inconsistent readings
Mitigation: Precision mounting, flexible couplings, and alignment verification during installation

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Pattern edge placement tolerance ±2μm, track concentricity within 5μm

Test Method

Optical comparator inspection, signal integrity testing with encoder test rigs, environmental cycling per IEC 60068

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Pattern Track

Manufacturer profiles associated with Pattern Track.

Sourcing Pattern Track from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

Related Components

Marking Ink

Specialized ink for permanent identification on surface mount resistors during manufacturing.

Dielectric Layer

Insulating layer in surface mount capacitors that stores electrical energy through polarization.

Optical Window

Transparent optical component for light transmission in polycarbonate lens housings

PCB Substrate

PCB substrate is the foundational insulating layer that provides mechanical support and electrical connectivity for electronic components in high-speed memory modules.

Frequently Asked Questions

What is the difference between incremental and absolute pattern tracks?