INDUSTRY COMPONENT

Code Disc/Scale

Precision optical or magnetic disc/scale for angular/linear position encoding in industrial automation systems.

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Component Specifications

Definition
A high-precision rotating disc or linear scale with precisely patterned tracks (optical, magnetic, or capacitive) that works with a sensor to convert mechanical position into digital signals for closed-loop control in motion systems.
Working Principle
Operates on photoelectric, magnetic, or capacitive encoding principles where patterned tracks on the disc/scale modulate light, magnetic fields, or capacitance as it moves relative to a sensor, generating phase-shifted signals that are interpolated to determine position with micron-level accuracy.
Materials
Optical glass (borosilicate) with chrome plating for reflective scales, stainless steel (AISI 304/316) for magnetic scales, aluminum alloy for structural components, photoresist coatings for patterning.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Accuracy±1 arc-second (rotary) / ±3 μm/m (linear)
Max Speed10,000 RPM (rotary) / 10 m/s (linear)
ResolutionUp to 0.001 arc-seconds (rotary) / 1 nanometer (linear)
Signal OutputIncremental (A/B/Z) / Absolute (SSI, BiSS, EnDat)
Diameter/Length20 mm to 500 mm (rotary) / 100 mm to 3 m (linear)
Protection RatingIP64 to IP68
Operating Temperature-20°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 32711, IEC 60068

Parent Products

This component is used in the following industrial products

Position Encoders

Precision measurement devices that convert linear or rotary motion into digital signals for position feedback in multi-axis positioning systems.

View Product Details

Position Feedback Encoders

Precision sensors that provide real-time position feedback for motion control systems.

View Product Details

Position Encoder

A sensor device that converts mechanical position into electrical signals for precise measurement and control.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Contamination leading to signal loss
  • Mechanical wear of bearings/supports
  • Electromagnetic interference in magnetic types
  • Thermal drift affecting accuracy
FMEA Triads
Trigger: Accumulation of dust/oil on optical surface
Failure: Signal degradation or complete loss
Mitigation: Install protective seals, use compressed air cleaning systems, implement regular maintenance schedules
Trigger: Bearing wear in rotary encoders
Failure: Eccentric rotation causing position errors
Mitigation: Use precision bearings with lubrication, monitor vibration levels, implement predictive maintenance

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.5 μm for linear scales, ±2 arc-seconds for rotary discs
Test Method
Laser interferometry for linear accuracy, autocollimator for angular accuracy, environmental testing 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 Code Disc/Scale

Manufacturer profiles associated with Code Disc/Scale.

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

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Frequently Asked Questions

What is the difference between incremental and absolute code discs?

Incremental discs generate pulses for relative position tracking, requiring a reference point, while absolute discs provide unique position values immediately upon power-up without homing.

How do environmental factors affect code disc performance?

Contamination (dust, oil) can obstruct optical paths, temperature variations cause thermal expansion affecting accuracy, and vibrations may introduce signal noise, requiring proper sealing and mounting.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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