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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
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