Sensor Magnet Application

Sensor Magnet Application

Sensor magnets are used in Hall effect sensor ,speed sensor, reed switch, location sensor etc, We have experience to help you choose the suitable sensor magnet for sensor application.

Magnetic Sensors and Reed Switches

Such sensor magnets are widely used invehicle and industrial, include automotive motors, ABS systems, engine ignition systems, brushless motor sensor, industrial automation, robots,office automation, household appliances and a variety of security systems.

Typical applications include:
Throttle position sensors
Rotational devices
Motor speed control sensors
Sensors for mobile device applications
Switches
Gear shift sensor
Brake system sensor
Speed sensor
Cam shaft sensor
Fuel injection sensor
Stearing column sensor

Precision Magnetic Sensor Permanent Magnet N35 D6 x 2mm

Sensor Neodymium Magnet Disk N35 D6 x 2.5

Radially Neodymium Iron Boron Ring Magnets

Uni Pole Radial Oriented Ring Magnet

Sensor Magnets

Sensor Magnets, Sintered & Bonded and Injection Neodymium Permanent Magnets for Sensors, Multi-pole oriented anisotropic bonded NdFeB magnet, Injection Molding Ferrite Magnets for Sensor China Supplier

MPCO Magnetics has been supplying permanent magnets for sensors for over 20 years. We specialise in high volume automotive and consumer product applications where zero defect quality and product consistency is critical.

Sensor magnets, that is used in the sensor system, mainly play the role of induction effect. Magnetic sensor is a device that can convert various magnetic fields and their varying amounts into electrical signal outputs.The magnetic field produced by the permanent magnets provided manually can be used as a carrier for many kinds of information.

sensor magnets for Electronic magnetic sensors

Therefore, the task of detecting, collecting, storing, converting, reproducing and monitoring various kinds of information carried in various magnetic fields and magnetic fields naturally falls on the magnetic field sensor. With the development of science and technology, the modern magnetic sensor has been developed to the solid, it is the use of magnetic field to make the electrical properties of the material changes in a variety of physical effects made, so that the magnetic field strength into electrical signals.

We are mainly products the magnets and magnetic related sensor driven by magnets, such as Hall magnetic sensors, Magnetic induction sensor.

Usually, Clients choose the magnet in high temperature of 150-250 degrees such as NdFeB, SmCo, AlNiCo etc materials with the Disc, Rod, Ring magnets, most of magnets are in multi-pole magnetization, diametrical magnetization, or axial magnetization. The magnets used in magnetic sensor should be with uniform density,with consistent magnetic field. In general, NdFeB is the preferred material due to its own characteristics, for examples with strong magnet strength, good temperature coefficient.But in case of low requirements that is not necessary for NdFeB magnets, Ferrite magnet is good choice because of cheap costs.

Neodymium Multi-poled Radial Ring

Sintered Neodymium Multipole Ring Magnet

Multi-pole Radial Magnetic Ring for Sensor

Multipole Neodymium Ring Magnets for Rotor

Radially Neodymium Magnet Assembly

Radially Neodymium Magnet Assembly Tech Specification:
Grade Neodymium N42
Inside Diameter 25mm
Outside Diameter 15mm on Stainless-steel
Thickness 50mm
Plating/Coating Nickel Coating on Magnets, surrounded by Stainless-steel outer ring
Max Working Temp 80°C

Direction of Magnetism 1, South on outside, North on inside ; 2, North on outside, South on inside

Radially magnetised magnets are rare due to a complex manufacturing process. Radially magnetised magnets are mostly used in motors and generators, as well as in free energy experimentation and rare earth permanent frictionless bearings.

This cylindrical Neodymium magnet has been radially magnetised with the south polarity on the inside and north on the outside. The outer diameter is 25mm and inner diameter is 15mm with a stainless-steel ring on the outside. radial neodymium magnetic segment assembly

Radial Ring Magnets are manufactured with the north and south pole on the outside diameter (OD) and inside diameter (ID). These can be used as motor magnets, sensor magnets, and any applications were multiple or single poles are required on the OD or ID of the magnet.

Ferrite Insert Molded Magnets

Plastic Isotropic NdFeB Bonded Magnets

Isotropic NdFeB Injection Magnets

MIM Speed Sensor Magnet

Radially magnetised magnets

Radially magnetised magnets are rare due to a complex manufacturing process. Radially magnetised magnets are mostly used in motors and generators, as well as in free energy experimentation and rare earth permanent frictionless bearings.
This cylindrical Neodymium magnet has been radially magnetised with the north polarity on the inside and south on the outside. The outer diameter is 40mm and inner diameter is 30mm with a stainless-steel ring on the outside.

Radial Ring Magnets are manufactured with the north and south pole on the outside diameter (OD) and inside diameter (ID). These can be used as motor magnets, sensor magnets, and any applications were multiple or single poles are required on the OD or ID of the magnet.

Application of Cylinder Rotor NdFeB Magnetic Assembly

Linear Halbach arrays:
Such as the brushless AC motor, voice coils, magnetic drug targeting to high-tech applications such as wiggler magnets which are used in Particle acceleratorsand Free-electron lasers. neodymium halbach array magnetic assemblies

Halbach cylinder:
Such as brushless AC motors, magnetic couplings and high field cylinders. Both brushless motors and coupling devices use multipole field arrangements.

Radial Multiple Poles Ring Magnet

Sintered NdFeB Multi-pole Radial Ring Magnets

Customized Powerful Ferrite Rotor Magnet

40mm OD x 30mm ID x 50mm thick Radially magnetised magnets

40mm OD x 30mm ID x 50mm thick Radially magnetised magnets for motors and generators

Cylinder Rotor NdFeB Magnetic Assembly Tech Specification:
Grade Neodymium N45
Inside Diameter 40mm
Outside Diameter 30mm on Stainless-steel
Thickness 50mm
Plating/Coating Nickel Coating on Magnets, surrounded by Stainless-steel outer ring
Max Working Temp 80°C

Direction of Magnetism 1, South on outside, North on inside ; 2, North on outside, South on inside
High performance
High precision
High corrosion resistance

Radially magnetised magnets are rare due to a complex manufacturing process. Radially magnetised magnets are mostly used in motors and generators, as well as in free energy experimentation and rare earth permanent frictionless bearings.
This cylindrical Neodymium magnet has been radially magnetised with the north polarity on the inside and south on the outside. The outer diameter is 40mm and inner diameter is 30mm with a stainless-steel ring on the outside.

Sintered Neodymium Multipole Ring Magnet

Multi-pole Radial Magnetic Ring for Sensor

Multipole Neodymium Ring Magnets for Rotor

Strong Neodymium Halbach Array Magnet

N45SH Strong Neodymium Halbach Array Magnet Feauture:
Material Neodymium Magnet
Technical Specifications
Mold No.: MPHARM-01
Size: OD 60mm X ID 20mm X T 100mm
(segment magnet length 100mm)
Pole number: 4 poles (8 magnets)
Max. work Temp.: 200 ℃
Magnet material: NdFeB N45SH
Housing material: Brass alloy
Coating NI-CU-NI
Magnetism direction K4
Lead Time About 30 days
Sample Avaliable
Certification ISO9001
Tolerance +/- 0.05mm

A Halbach Array is a special configuration of magnets to maximise the magnetic field on one side whilst reducing it on the other.
In the ring form presented here, the magnetic lines are focussed inside the ring.
Halbach arrays are the cutting edge of new design in relation to generators, motors, magnetic bearings and many more applications.
These magnets are supplied in sets of 12 magnets and are NOT assembled in the ring arrangement for you.

Precision Magnetic Sensor Permanent Magnet N35 D6 x 2mm

Sensor Neodymium Magnet Disk N35 D6 x 2.5

Radially Neodymium Iron Boron Ring Magnets

Uni Pole Radial Oriented Ring Magnet

N42H Strong NdFeB Halbach Array Magnet

N42H Strong NdFeB Halbach Array Magnet Feauture:
Material Neodymium Magnet
Technical Specifications
Mold No.: MPHARM-02
Size: 110mm O.D. (100mm OD magnets) x 43mm I.D. x 75mm length
(segment magnet length 75mm)
Pole number: 4 poles (8 magnets)
Max. work Temp.: 150 ℃
Magnet material: NdFeB N42H
Housing material: Brass alloy
Coating NI-CU-NI
Magnetism direction K2 assembled
Lead Time About 30 days
Sample Avaliable
Certification ISO9001

Tolerance +/- 0.05mm

The circular Halbach array is a magnetised cylinder composed of neodymium magnets producing an intense magnetic field confined within the cylinder. NdFeB Halbach Array

A Halbach Array is a special configuration of magnets to maximise the magnetic field on one side whilst reducing it on the other.
In the ring form presented here, the magnetic lines are focussed inside the ring.

Neodymium Sensor Magnet System N35SH D6 x2.5mm

Super NdFeB Seneor Magnet Disk N35SH D8 x2.5mm

Disc Magnetic Proximity Sensor Magnet N35SH D4 x2mm

Magnetic Hall Effect Sensor Magnet N35 D6 x3mm

multipole magnetic ring for sensor

This specification defines the dimensional and magnetic properties of a multipole magnetic ring for use with the linear position magnetic encoder for off-axis rotary applications. Magnetic Multipole Ring Plastic Ferrite for Sensor

Left Images shows the proper placement of a multipole ring over the Linear Incremental (off-axis) Position Sensor. The centerline of the magnetic ring (median Hall sensor scan path) is located over the Hall array.
The magnetic ring is designed such that the pole length lp matches the required length at the scan path (typically the center) of the ring. The IC is oriented in perpendicular with respect to the rotation center.

Marking

The magnet ring has two marks at the backside:
One mark shows the number of poles (72) the other mark shows a single digit letter (A…F), which is of no relevance.

Mounting the Magnet Ring

The magnet ring may be mounted directly on magnetic or non-magnetic surfaces. When magnetic surfaces are used, the ring may be mounted on top of the surface, but not immersed in a cavity, as this may weaken the magnetic field of the magnet. When mounting the magnet on a non-magnetic surface, either method is acceptable.

Depending on the carrier material, there are several adhesives available to glue the ring to the surface. For general ruggedness and vibration demands, the use of two-component-adhesive (binder + hardener) has proven to be successful in most cases.

A sensor magnet in housing is a permanent magnet that is epoxy encapsulated in a plastic or metal housing that is either cylindrical panel mount or adjustable screw mount, rectangular screw mount, or other custom mounted housing. Our sensor magnet products are used to actuate various magnetic reed sensors, hall effect sensor, and magnetic reed switches. The magnet is typically mounted to the moving part while the sensor or switch is mounted to a fixed surface.

Reed Switch Sensor Position Magnet N35SH D4 x8mm

Reed Switch Sensor Magnet Neodymium Rod N42H D2 x8mm

NdFeB Sensor Rod Magnet N35SH D2 x8mm

Magnetic Position Sensor Magnet Round N35SH D4 x2.5mm

Magnetic Multipole Ring Ferrite Sensor 72 poles

Magnetic Multipole Ring Ferrite Sensor 72 poles, Plastic Bonded Strontium Ferrite Multipole Ring Magnet, Multipoled Ring Bonded Ferrite Magnets for linear magnetic position sensor, Circular multi-pole magnetic rings China Factory

Magnetic Multipole Ring Ferrite Sensor 72 poles Overview
Multipole Ring Magnet Part No.: MPSMR24-72
Magnetisation Grade: BMNP-1612
Material: Plastic bonded Strontium Ferrite SrFe.
Magnet Shape: Ring
Magnet Size: inner diameter = 24mm, outer diameter = 32mm, thickness = 1.5mm
Pole Length: 1.2 mm
Poles No.: 72 Poles

Plastic Bonded Strontium Ferrite Multipole Ring Magnet 72poles – Linear Position
The linear magnetic position sensor product family measures the linear movement of a multi-pole magnetic strip. Circular multi-pole magnetic rings can also be used in rotary incremental rotation off-axis applications. This high precision product family allows the user to detect linear movement with a resolution as fine as 0.5μm. All products are aimed at applications which require extreme precision, accuracy, dynamic range and ultra-low power consumption.

Sensor Switch Magnet AlNiCo5

Cylinder ALNICO Sensor Magnet

Hall Effect Switch Magnet Sensor N35SH D8 x 8mm

Reed Switch Magnet Cylinder Sensor N35SH D6 x 8mm

Halbach Array 12 magnets

A Halbach Array is a special configuration of magnets to maximise the magnetic field on one side whilst reducing it on the other.
In the ring form presented here, the magnetic lines are focussed inside the ring.
Halbach arrays are the cutting edge of new design in relation to generators, motors, magnetic bearings and many more applications.
These magnets are supplied in sets of 12 magnets and are NOT assembled in the ring arrangement for you.

You will need to assemble the magnets in the desired locations as described by the diagram below.
I recommend you will have a sufficient workshop and engineering knowledge to setup the ring arrangement.

The Cylinder Halbach Magnet are very powerful and you cant simply place them together with your hands, you WILL NEED specific tools to hold in place and secure these magnets.

Halbach Magnet’s main function is holding, fixturing, linear coupling application, so it is mainly used for motor, generator, magnetic resonance, magnetic levitation high-speed rail,pre-polarization, chemical single crystal growth. For example, the traditional permanent magnet motor often use distributed winding to weaken the influence of harmonic magneto motive force. In the Halbach motor because of its high magnetic field sine distribution, harmonic magnetic field less affected, it can be used centralized winding. With Halbach motor magnet arrangement, can reduce the torque ripple of the motor, so the bearing requirements for the motor greatly reduced.

Sensor AlNiCo Rod Magnet

Cylinder AlNiCo Permanent Magnetoresistive Sensor Magnet

Reed Sensors Magnets AlNiCo Rod

Rod Sensor AlNiCo Magnet