Magnets - Multi Purpose

Part Number	Description / PDF	Quantity
9029 Radial Magnets, Inc.	MAGNET 0.315"DIA X 0.098"H CYL	740
55.2-ND-5-3 J.W. Winco	STEEL DISC RAW MAGNET	30
G16-A-0315-75-036 Phoenix America	TARGET WHEEL	200
COM-08890 SparkFun	MAGNET DISK - 0.709"	0
NDFEB 10X5X1.9MM Standex Electronics	MAGNET 0.394" L X 0.2" W RECT	0
G32-A-1750-75-080 Phoenix America	TARGET WHEEL	0
SMCO5 3X4MM Standex Electronics	MAGNET 0.118"DIA X 0.157"H CYL	3799
101MG7-BP Honeywell Sensing and Productivity Solutions	MAGNET 0.248"DIA X 0.248"H CYL	0
51.3-ND-22-SW J.W. Winco	STEEL DISC RETAINING MAGNET	932
60-AN-25 J.W. Winco	STEEL BUTTON-TYPE MAGNET	30
50.4-HF-25 J.W. Winco	STEEL DISC RETAINING MAGNET	105
55.1-ND-12-3.5-3 J.W. Winco	DISC-SHAPED RAW MAGNET	191
52.4-AN-13-M4-E J.W. Winco	STEEL CYLINDER RETAINING MAGNET	30
G58-H-1125-25-050 Phoenix America	TARGET WHEEL	36
CS-0298-3 Alliance	NEODYMIUM N44H BLOCK MAGNET	5000
53.1-ND-30-GR J.W. Winco	PLASTIC DISC RETAINING MAGNET	30
G10-A-0188-75-024 Phoenix America	TARGET WHEEL	150
8118 Radial Magnets, Inc.	MAGNET 0.25" SQ X 0.750"H RECT	360
G16-A-0315-75-040 Phoenix America	TARGET WHEEL	200
8220 Radial Magnets, Inc.	MAGNET 1.260"DIA X 0.310"H ROUND	74

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.