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motor magnetic ring
Motor encoder magnet
motor magnetic ring
Motor encoder magnet

Motor Sensing Magnetic Ring, O.D.21mm, 8 Options

$0.78 – $2.16

  • Global Door-to-Door Delivery;
  • Pre-Delivery Testing Ensures Accuracy;
  • Minimum Order Quantity: 10pcs;
  • Best cost performance value on Market;
  • Comes with essential tools;
  • Customizable metal carrier (various diameters);
  • Volume discounts available;
  • Orders above $200 receive a free magnetic field viewing film.
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SKU: SOD21MM Categories: , Tags: , ,

DC Motor Tachometer Ring, DC Motor Speed Sensor Ring, DC Geared Motor Magnetic Ring, DC Reduction Motor Magnetic Ring, Motor Speed Sensing Ring, Motor Tachometer Ring, Motor Induction Ring, Motor Sensing Magnetic Ring

Global door-to-door delivery

Pre-delivery testing ensures accuracy

Best cost- performance value on market

Delegate the task of finding the perfect encoder magnet and sensor to us so that you can focus on your core business.

Description:

Our 21mm outer diameter magnetic rings, crafted from premium injection molded ferrite and neodymium iron boron materials, offer reliable and customizable solutions for a wide range of motor applications, including DC motor speed sensing, DC gear motor, and general motor speed sensing and induction. With over 500 different sizes available, we can provide a wide range of options to meet your unique needs. Our products deliver superior magnetic performance, dimensional accuracy, and excellent temperature stability, making them ideal for applications requiring high precision and reliability.

Specification:

Magnetic Encoder Discs CAD

Magnetization method

Axial, Rotary
Radial, Rotary
Inter, Radial, Rotary
O.D
 (mm)		 I.D
 (mm)		 Thick
 (mm)		 Pole Qty Material Surface
 magnetic field		 Magnetization 
 method
21 12 5 4P Injection molded neodymium magnets 90-10mT Radial, Rotary
21 18.5 6 36P Injection molded ferrite magnets 95-110mT Radial, Rotary
21.1 7 6 4P Injection molded ferrite magnets 80-87mT Radial, Rotary
21.1 8 6 4P Injection molded ferrite magnets 80-87mT Radial, Rotary
21.4 3.15 6 2P Ferrite magnets 155-165mT Radial, Rotary
21.4 4.96 6 2P Ferrite magnets 155-165mT Radial, Rotary
21.8 8 6.7 16P Injection molded ferrite magnets 80-87mT Radial, Rotary
21.8 18.5 4 24P Injection molded ferrite magnets 80-87mT Radial, Rotary

Millimeters to inches conversion table
The fraction inches are rounded to 1/64 resolution.

Millimeters(mm) Inches(")
(decimal)		 Inches(")
(fraction)
0.01mm 0.0004″ 0″
0.1 mm 0.0039 ″ 0 ″
1 mm 0.0394 ″ 3/64 ″
2 mm 0.0787 ″ 5/64 ″
3 mm 0.1181 ″ 1/8 ″
4 mm 0.1575 ″ 5/32 ″
5 mm 0.1969 ″ 13/64 ″
6 mm 0.2362 ″ 15/64 ″
7 mm 0.2756 ″ 9/32 ″
8 mm 0.3150 ″ 5/16 ″
9 mm 0.3543 ″ 23/64 ″
10 mm 0.3937 ″ 25/64 ″
20 mm 0.7874 ″ 25/32 ″
30 mm 1.1811 ″ 1 3/16 ″
40 mm 1.5748 ″ 1 37/64 ″
50 mm 1.9685 ″ 1 31/32 ″
60 mm 2.3622 ″ 2 23/64 ″
70 mm 2.7559 ″ 2 3/4 ″
80 mm 3.1496 ″ 3 5/32 ″
90 mm 3.5433 ″ 3 35/64 ″
100 mm 3.9370 ″ 3 15/16 ″

Note:If you require sensor recommendations, please contact our sales representatives and we will provide you with suggestions for pairing them.

FAQs:

What is a magnetic encoder? Why does it need sensor magnets?

An encoder is an electromechanical device that converts information from one format or code into [...]

Which encoder has better anti-interference ability?

Among various principles, magnetic encoders have the strongest ability to resist environmental interference and can [...]

Can ring magnetic encoder systems be used in vacuum environments?

Ring magnetic encoder systems can be used in vacuum environments where outgassing does not occur. [...]

Will NdFeB magnetic encoder rings work better?

Small size,light weight, strong magnetism, medium price NdFeB magnet can reach about 3500 Gauss under [...]

What magnetic fields will damage the magnetic scale?

Magnetic flux densities higher than 50 mT—— Permanent damage Magnetic flux densities higher than 10 [...]

What is the difference between single-track sensor magnetic ring and dual-track absolute magnetic disc?

Single-track sensor magnetic ring,Dual-track absolute magnetic disc,Radially Multipole Sintered Ferrite Magnets for Hall Induction Magnetic [...]

What is the difference between a ferrite encoder disk and a rubber magnetic encoder disk?

Vulcanized Rubber Magnetic Target, Rubber Magnetic Target, Rubber Encoder Ring, Rubber Encoder Magnet Ring, Double-Track [...]

What are the advantages and disadvantages of ferrite encoder magnetic rings?

Ferrite Magnets Strengths Easy to magnetize Resistant to corrosion and don’t require extra coatings Resistant to [...]

What material should be chosen for the encoder magnetic ring used by the robot?

Injection-molded rubber magnets are preferred because the added rubber has toughness and is more resistant [...]

1 review for Motor Sensing Magnetic Ring, O.D.21mm, 8 Options

  1. jcrews3 –

    Customer service was fantastic, delivery was super quick and product was perfect. Very happy customer and will definitely order again through ccmagnetics.

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