INDUSTRY COMPONENT

Scale/Rotor

Precision rotor component in feedback devices for measuring rotational parameters like speed, position, or torque in industrial machinery.

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Component Specifications

Definition
A scale/rotor is a calibrated rotating element within feedback devices such as encoders, resolvers, or tachometers. It converts mechanical rotation into measurable electrical signals through principles like optical interruption, magnetic induction, or capacitive coupling. This component provides critical real-time data for closed-loop control systems in industrial automation.
Working Principle
Operates by interrupting light beams (optical encoders), varying magnetic fields (magnetic encoders), or changing capacitance. As the rotor rotates, it generates patterned signals detected by sensors, which are processed to determine precise rotational speed, angular position, or direction.
Materials
Typically aluminum alloy (e.g., 6061-T6) for lightweight rigidity, stainless steel (e.g., 304/316) for corrosion resistance, or engineered plastics (PEEK, Delrin) for low inertia. May include magnetic coatings (ferrite, neodymium) or optical patterns (chrome on glass).
Technical Parameters
  • Weight 5-500 g
  • Max RPM 10,000-50,000
  • Accuracy ±0.01° to ±0.5°
  • Diameter 10-200 mm
  • Mounting Shaft, flange, or through-hole
  • Resolution 100-10,000 pulses/revolution
  • Operating Temperature -40°C to 120°C
Standards
ISO 16063, DIN 19245, IEC 60034

Industry Taxonomies & Aliases

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

feedback rotor encoder rotor tachometer rotor industrial scale component rotational feedback device precision rotor machinery control part Scale/Rotor Scale/Rotor in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Feedback device

A sensor component that provides real-time position, velocity, or torque data to the motor controller.

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Engineering Analysis

Risks & Mitigation
  • Misalignment causing signal errors
  • Material fatigue under high RPM
  • Contamination affecting optical/magnetic signals
  • Thermal expansion altering calibration
FMEA Triads
Trigger: Improper mounting or shaft misalignment
Failure: Inaccurate positional feedback leading to control errors
Mitigation: Use precision alignment tools during installation and regular calibration checks
Trigger: Material degradation from excessive heat or vibration
Failure: Rotor deformation or pattern damage causing signal loss
Mitigation: Select appropriate temperature-rated materials and implement vibration damping
Trigger: Contaminant buildup (dust, oil) on optical/magnetic surfaces
Failure: Signal attenuation or complete failure
Mitigation: Install protective seals and implement regular cleaning maintenance

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Radial runout < 0.02 mm, axial play < 0.01 mm, balance grade G2.5 per ISO 1940
Test Method
Laser interferometry for positional accuracy, dynamic balancing tests, environmental stress screening (temperature, vibration)

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.

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Frequently Asked Questions

What is the difference between a scale and a rotor in feedback devices?

In this context, 'scale' refers to the calibrated markings or patterns on the rotor, while 'rotor' is the physical rotating component. They are often integrated as one part.

How do I select the right scale/rotor for my application?

Consider required accuracy, resolution, rotational speed, environmental conditions (temperature, contaminants), mounting compatibility, and material durability.

Can scale/rotors be replaced independently?

Yes, but replacement requires precise alignment and calibration. Use manufacturer-recommended parts to maintain system accuracy.

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.

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