Scale/tape: Length Up to 30 m, Accuracy ±1 to ±10 μm/m

Component Specifications

Definition

A calibrated linear scale or tape used in position feedback systems to provide accurate displacement measurements by detecting relative movement between a reading head and the scale, typically employing optical, magnetic, or inductive sensing technologies to convert mechanical position into electrical signals for closed-loop control.

Working Principle

Operates by detecting incremental or absolute position changes through patterned markings (e.g., gratings, magnetic poles) on the scale/tape. A sensor reads these patterns as the scale moves relative to it, generating electrical pulses or digital signals proportional to displacement, enabling precise position feedback to controllers.

Materials

Stainless steel, aluminum alloy, glass (for optical scales), or polymer substrates with protective coatings; markings may be chrome-plated, etched, or magnetically encoded.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	Up to 30 m
Accuracy	±1 to ±10 μm/m
Resolution	0.1 μm to 1 mm
Output Signal	Incremental (A/B/Z) or absolute (SSI, BiSS)
Protection Rating	IP67
Operating Temperature	-10°C to 70°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 230-6, DIN 862

Parent Products

This component is used in the following industrial products

Position feedback system

A system that provides real-time positional data of the Y-axis carriage to the control unit for precise motion control.

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Engineering Analysis

Risks & Mitigation

Contamination affecting accuracy
Mechanical wear or damage
Signal interference in electromagnetic environments

FMEA Triads

Trigger: Contamination (dust, oil) on scale surface
Failure: Signal dropout or inaccurate readings
Mitigation: Implement protective seals, regular maintenance, and use air purge systems

Trigger: Mechanical misalignment or vibration
Failure: Premature wear or measurement errors
Mitigation: Ensure proper installation with alignment tools, use vibration-damping mounts

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±5 μm per meter for standard industrial applications

Test Method

Laser interferometry or calibrated reference standards per ISO 230-6

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

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Manufacturers of Scale/tape

Manufacturer profiles associated with Scale/tape.

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Frequently Asked Questions

What is the difference between incremental and absolute scales?

Incremental scales provide relative position data requiring a reference point, while absolute scales give unique position values without homing, ensuring no data loss after power cycles.

How do I maintain a scale/tape in harsh environments?

Use sealed designs with IP67 rating, regular cleaning with non-abrasive solvents, and avoid mechanical impacts or contamination from chips/coolants to ensure longevity.

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.

Scale/tape