Magnets - Multi Purpose

Part Number	Description / PDF	Quantity
8194 Radial Magnets, Inc.	MAGNET 0.375"DIA X 0.125"H CYL	2640
ALNICO500 19X3.2X3.2MM Standex Electronics	MAGNET 0.126" SQ X 0.748"H RECT	534
51.6-ND-43-27-M5 J.W. Winco	STEEL DISC RETAINING MAGNET	30
G08-H-0118-50-012 Phoenix America	TARGET WHEEL	150
G58-H-1375-25-032 Phoenix America	TARGET WHEEL	0
50.1-HF-25 J.W. Winco	STEEL DISC RETAINING MAGNET	30
51.2-ND-43-SW J.W. Winco	STEEL DISC RETAINING MAGNET	30
CL20S1 Carlo Gavazzi	MAGNET CYLINDRICAL	0
CL3 Carlo Gavazzi	MAGNET RECTANGULAR	0
CL11 Carlo Gavazzi	MAGNET CYLINDRICAL	0
101MG2L1 Honeywell Sensing and Productivity Solutions	MAGNET 0.125" SQ X 0.375"H RECT	0
CL23 Carlo Gavazzi	MAGNET CYLINDRICAL	0
ALC1726 Alliance	NEODYMIUM N42H DISC MAGNET	19984
CL20S3 Carlo Gavazzi	MAGNET FOR FSM.S.2/S2/AT CYL	0
CL4 Carlo Gavazzi	MAGNET RECTANGULAR	0
CL10 Carlo Gavazzi	MAGNET CYLINDRICAL	0
ALC1751 Alliance	FERRITE C5 SENSOR MAGNET	100000
M1219-5 Comus International	NEODYMIUM IRON BORON NICKEL PLAT	700
CL31 Carlo Gavazzi	MAGNET CYLINDRICAL	0
ASR00024-5 TinyCircuits	MAGNET 0.197"DIA X 0.118"H CYL	0

Magnets - Multi Purpose

1. Overview

Magnets - Multi Purpose refer to a category of magnetic components designed for versatile applications beyond basic attraction/repulsion functions. These magnets integrate advanced materials and engineering to deliver precise magnetic fields, durability, and adaptability in modern technological systems. They play a critical role in automation, electronics, energy systems, and medical devices by enabling motion control, sensing, energy conversion, and data storage.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Permanent Magnets	Retain magnetism without external power; high energy density	Electric motors, generators, MRI machines
Electromagnets	Magnetic field generated by electric current; adjustable strength	Relays, magnetic separators, particle accelerators
Rare Earth Magnets	Exceptional strength-to-size ratio; temperature-resistant	Wind turbines, hard drives, sensors
Flexible Magnets	Elastomer-based materials with customizable shapes	Sealing systems, automotive sensors, consumer electronics

3. Structure and Composition

Typical configurations include:

Material Core: Rare earth alloys (NdFeB, SmCo), ferrites, or electromagnet coils
Coatings: Nickel-copper-nickel plating, epoxy resin, or polymer encapsulation for corrosion resistance
Mechanical Housing: Aluminum or steel casings for structural integrity
Mounting Features: Integrated threads, adhesive backing, or customized geometries

4. Key Technical Specifications

Parameter	Description	Importance
Magnetic Flux Density	Measured in Tesla (T); determines field strength	Impacts actuation force and sensor sensitivity
Coercivity	Resistance to demagnetization (kA/m)	Dictates operational stability in varying conditions
Max Operating Temperature	Thermal limit before performance degradation	Critical for high-temperature environments
Dimensional Tolerance	Precision in manufacturing ( 0.05mm typical)	Affects integration with mechanical systems

5. Application Fields

Industrial Automation: Proximity sensors, conveyor belt separators
Consumer Electronics: Smartphone speakers, wireless charging systems
Medical Devices: MRI scanners, implantable drug delivery systems
Renewable Energy: Direct-drive wind turbine generators
Transportation: EV traction motors, maglev train systems

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Arnold Magnetic Technologies	VACODYM Series	High-energy rare earth magnets for aerospace applications
Eclipse Magnetics	Precision Electromagnet Line	Customizable field control for industrial sorting systems
Hitachi Metals	Neomax NdFeB Magnets	45 MGOe energy product with thermal stability up to 200 C

7. Selection Guidelines

Determine required magnetic field strength and spatial constraints
Evaluate environmental conditions (temperature, humidity, vibration)
Assess cost-performance balance: Rare earth magnets offer superior performance but higher cost
Verify compliance with RoHS/REACH standards for material safety

8. Industry Trends

Key developments include:

Advancements in nanocomposite magnetic materials
Miniaturization for IoT sensor integration
Recycling technologies for rare earth elements
Smart magnets with embedded sensors and wireless communication

Case Study: Tesla's Model 3 permanent magnet motor achieved 97% efficiency using NdFeB magnets with proprietary corrosion-resistant coatings, demonstrating the critical role of advanced magnetic materials in EV technology.