Position Magnet: Temperature Range -40°C to +150°C

Component Specifications

Definition

A position magnet is a precisely engineered permanent magnet component that generates a stable magnetic field used as a reference signal in position feedback sensors. It works in conjunction with Hall-effect sensors, magnetoresistive sensors, or inductive sensors to detect and measure the exact position of moving parts in industrial equipment. The magnet's magnetic field characteristics (strength, orientation, and gradient) are calibrated to provide accurate position data for closed-loop control systems in automation and motion control applications.

Working Principle

The position magnet creates a consistent magnetic field that interacts with position sensors (typically Hall-effect or magnetoresistive sensors). As the magnet moves relative to the sensor, changes in the magnetic field are detected and converted into electrical signals proportional to position. This enables precise measurement of linear displacement or angular rotation without physical contact, providing reliable position feedback for servo systems, actuators, and motion control applications.

Materials

Neodymium Iron Boron (NdFeB) N42SH grade with nickel-copper-nickel triple layer coating, Samarium Cobalt (SmCo) for high-temperature applications, or Alnico for specific industrial environments. Material selection depends on required magnetic strength, temperature stability, corrosion resistance, and cost considerations.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Coating	Nickel-Cu-Ni triple layer (10-15 μm)
Tolerance	±0.1 mm dimensional, ±5% magnetic field
Resistance	IP67 environmental protection
Operating Life	>10,000 hours continuous operation
Magnetic Strength	300-500 mT residual induction
Temperature Range	-40°C to +150°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 9001:2015, DIN 17410, IEC 60404-8-1

Parent Products

This component is used in the following industrial products

Position Feedback Sensor

A sensor that detects and reports the real-time position of a valve actuator's moving components.

View Product Details

Engineering Analysis

Risks & Mitigation

Magnetic field interference from nearby equipment
Demagnetization at high temperatures
Corrosion in harsh environments
Mechanical damage during installation
Incompatibility with sensor type

FMEA Triads

Trigger: Exposure to temperatures beyond specification limits
Failure: Partial or complete demagnetization
Mitigation: Use temperature-stable materials (SmCo for high temp), implement thermal monitoring, ensure proper heat dissipation

Trigger: Corrosive environment without proper coating
Failure: Surface degradation and magnetic performance loss
Mitigation: Apply appropriate protective coatings (nickel, epoxy), select corrosion-resistant materials, implement environmental sealing

Trigger: Mechanical impact during installation or operation
Failure: Physical damage or cracking
Mitigation: Use protective housings, follow proper handling procedures, implement shock absorption mounts

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Position accuracy: ±0.05 mm, Magnetic field consistency: ±3% across operating range

Test Method

Gaussmeter measurement for magnetic strength, coordinate measuring machine (CMM) for dimensional verification, thermal cycling tests, salt spray testing for corrosion resistance

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 Position Magnet

Manufacturer profiles associated with Position Magnet.

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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

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Frequently Asked Questions

What is the difference between position magnets and regular magnets?

Position magnets are precision-engineered with specific magnetic field characteristics (strength, orientation, gradient) and tight dimensional tolerances for accurate position sensing, while regular magnets are designed for general-purpose magnetic attraction without precision requirements.

How do I select the right position magnet for my application?

Consider magnetic strength requirements, temperature range, environmental conditions (moisture, chemicals), dimensional constraints, sensor compatibility, and required position accuracy. Consult manufacturer specifications and application engineers for optimal selection.

Can position magnets be customized for specific applications?

Yes, manufacturers offer customization of magnetic material, strength, dimensions, coating, and magnetization patterns to match specific sensor requirements and application environments.

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.

Position Magnet