Can I contact factories directly on CNFX?

CNFX is an open directory. Each factory profile provides direct contact information.

Scale/Disk Component – Machinery and Equipment Manufacturing

Q: What is the difference between incremental and absolute encoder disks?

Incremental disks have uniform periodic patterns that generate pulses for relative position measurement. Absolute disks have unique coded patterns (Gray code, binary) that provide unique position values for each angular position without requiring a reference point.

Q: How does disk material affect encoder performance?

Glass disks offer superior thermal stability and precision for high-accuracy applications. Polymer disks provide better shock resistance and cost-effectiveness. Material choice affects thermal expansion, durability, and optical/magnetic properties.

Component Specifications

Definition

A precision-engineered rotating disk component within encoder systems that contains precisely patterned markings (optical lines, magnetic poles, or capacitive patterns) which interact with sensors to generate electrical signals corresponding to angular position, rotational speed, or linear displacement. The disk's pattern resolution directly determines the encoder's measurement accuracy and resolution.

Working Principle

The disk rotates with the measured shaft, and its patterned surface interacts with stationary sensors (optical, magnetic, or capacitive). As patterns pass the sensor, they create periodic signal variations that are converted to digital pulses. The pulse count determines position, while pulse frequency determines speed. Optical disks use light transmission/reflection through precise gratings; magnetic disks use alternating pole patterns; capacitive disks use varying dielectric patterns.

Materials

Optical disks: glass (borosilicate) or polymer (polycarbonate, acrylic) with chromium or photoresist patterning. Magnetic disks: ferromagnetic alloys (nickel-iron) with magnetized patterns. High-end: ceramic composites for thermal stability. Coatings: anti-reflective (optical), protective (parylene).

Technical Parameters

Accuracy ±1 arc-second to ±5 arc-minutes
Diameter 10-300 mm
Thickness 0.5-5 mm
Line Count 100-50,000 lines/revolution
Maximum RPM 5000-20000 RPM
Pattern Type Incremental/Absolute (Gray code, binary)
Operating Temperature -40°C to +120°C

Standards

ISO 16063, DIN 43855, IEC 60068

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Scale/Disk.

Parent Products

This component is used in the following industrial products

Encoder System

A precision measurement device that converts angular or linear position into digital signals for position feedback in CMM arms.

View Product Details

Engineering Analysis

Risks & Mitigation

Pattern contamination/damage
Thermal expansion mismatch
Mounting misalignment
Material degradation under UV/chemical exposure
Electrostatic discharge damage (optical disks)

FMEA Triads

Trigger: Contamination on optical patterns
Failure: Signal dropout or erroneous readings
Mitigation: Sealed encoder housings, regular cleaning protocols, contamination-resistant coatings

Trigger: Thermal expansion mismatch between disk and shaft
Failure: Pattern distortion and accuracy loss
Mitigation: Material matching, temperature compensation algorithms, low-CTE materials

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Pattern position tolerance: ±0.5 μm to ±5 μm, Flatness: <5 μm, Runout: <10 μm

Test Method

Laser interferometry for pattern accuracy, coordinate measuring machines (CMM) for dimensional verification, optical inspection for pattern defects, thermal cycling tests

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

Related Components

pH Sensor Assembly

Precision pH sensor assembly for automated monitoring and dosing systems in industrial applications

Load Cell Assembly

Precision load cell assembly for automated powder dispensing systems

Dust Collection Port

A dust collection port is a critical component in automated powder dispensing systems that captures airborne particulates at the source to maintain clean air quality and prevent cross-contamination.

Sensor Element

Core sensing component in industrial smart sensor modules that converts physical parameters into electrical signals for process monitoring and control.

Frequently Asked Questions

What is the difference between incremental and absolute encoder disks?

Incremental disks have uniform periodic patterns that generate pulses for relative position measurement. Absolute disks have unique coded patterns (Gray code, binary) that provide unique position values for each angular position without requiring a reference point.

How does disk material affect encoder performance?

Glass disks offer superior thermal stability and precision for high-accuracy applications. Polymer disks provide better shock resistance and cost-effectiveness. Material choice affects thermal expansion, durability, and optical/magnetic properties.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

Scale/Disk