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In Hall-effect magnetic encoders, the dimensions, material and number of magnetic poles of the magnetic ring directly affect the encoder’s detection accuracy and stability. To assist customers with product selection, we have compiled the dimensions of magnetic rings for three commonly used materials and eight models of 2.5 mm-thick Hall-effect magnetic encoders.
Firstly, sintered ferrite magnetic rings are suitable for standard Hall-effect encoders, position detection, motor speed measurement and other applications, offering good value for money.
Recommended dimensions: D13 × d9 × 2.5 mm (axially magnetised), D16 × d12 × 2.5 mm (axially magnetised), D21.6 × d14.8 × 2.5 mm (axially magnetised)
Bonded neodymium-iron-boron magnetic rings offer superior magnetic performance to sintered ferrite and are suitable for high-resolution angular detection, servo motors, robotic joints, motor feedback systems and other applications requiring high encoding accuracy.
Recommended dimensions: D52 × d47 × 2.5 mm
2.5mm thick multipole magnetic ring for use on magnetic encoders
In addition, injection-moulded ferrite can be moulded into complex shapes; due to its inherent toughness, it is less prone to breakage when mounted on a shaft, ensuring more stable operation.
Recommended dimensions: D9.5 × d3.2 × 2.5 mm (radial 4-pole), D16 × d3.1 × 2.5 mm (single-sided 6-pole), D18 × d2.25 × 2.5 mm (single-sided 32-pole), D18 × d1.97 × 2.5 mm (single-sided 24-pole)
In addition to the specifications listed above, we can also customise Hall effect encoder magnetic rings to meet customer requirements. If you are looking for 2.5 mm thick magnetic rings suitable for Hall effect encoders, please do not hesitate to contact us.
2.5 mm thick multi-pole magnetic rings;
24 pole hair blow dryer nozzle molding ring magnet 57x47x2.5MM
Encoder single-sided multipole ferrite ring magnet 34mm x 2.5mm
This is a very small rectangular ferrite block magnet, measuring 2.45 mm in length and 1 mm in both width and height. It is magnetised along its length and is barely noticeable when held in the hand....
7.4x6x5mm Ferrite Small Block Magnet Introduction，Material: Hard Ferrite (Ceramic)，Shape: Block / Rectangle / Bar，Coating: No Coating，Grade (Chinese Stardard): Y30，Operating temperature: -40°C to 250°C，Delivery time: 7-15 days，Magnetization direction: thickness....
U-shaped neodymium magnets are a type of high-performance permanent magnet material with a structure resembling the letter ‘U’. Manufactured from sintered neodymium-iron-boron, they are characterised by high magnetic energy product....
This is a radial 4-pole ring (Hollow cylinder) magnet, the material is bonded NdFeB, with high magnetic performance, the size is 16mm outer diameter, inner hole 5mm, height 20mm, surface gray epoxy treatment, suitable for water pump motor...
This product is a 4-pole ring magnet, injection-molded ferrite material, the sample size is 22mm outer diameter, 7mm inner diameter, 4mm thickness, 2 N poles and 2 S poles, mainly used for push rod motors, magnetic induction devices, encoders, etc.,...
This is a radial 2 pole circular magnet designed specifically for magnetic encoder chips. It is made of sintered neodymium-iron-boron with N35 grade performance and is suitable for standard environments....
This product is a multi pole magnetic ring with an inner diameter of 1.5mm. The material is injection molded ferrite. It adopts axial multi pole magnetization and is mainly used for DC motors. If you have a sample of similar injection molded magnetic products, please contact us for quotation....
This is a very small size rectangular block magnet with galvanized surface, 3mm length, 1.5mm width and height, with very fine tolerance, magnetized by lengthwise direction, mainly used in precision electronics, instrumentation, please contact us if you need to buy....