Magnetic encoding is a technology used to measure position, speed, and direction in various mechanical systems. Magnetic encoders utilize magnets and sensors to track motion and provide precise feedback. These encoders are widely used in robotics, automation, and industrial machinery. At GME Magnet, a trusted magnetic encoding manufacturer, we offer high-quality, durable encoders designed to meet your specific needs. Whether in harsh environments or precision applications, our encoders deliver exceptional performance and reliability, ensuring your system operates smoothly and efficiently.

Magnetic Encoders
●Model: MU128-15-29-1.1
●Number of Pole Pairs: 32 pole pairs for main track, 31 pole pairs for vernier track
●Diameter: 29mm
●For: 15mm shaft (transition fit)
●Carrier Material:SUS430

Encoder Magnets
●Model: MU128-38-56-1.1
●Number of Pole Pairs: 64 pole pairs for main track, 63 pole pairs for vernier track
●Diameter: 56mm
●For:38mm shaft (transition fit)
●Carrier Material:SUS430

Magnetic Encoder Ring
●Model: MU150-18-34-1.1
●Number of Pole Pairs: 32 pole pairs for main track, 31 pole pairs for vernier track
●Diameter: 34mm
●For: 18mm shaft (transition fit)
●Carrier material: SUS430

Magnetic Ring Encoder
●Model: MU150-47.4-64-1.1
●Number of Pole Pairs: 64 pole pairs for main track, 63 pole pairs for vernier track
●Diameter: 64mm
●For: 47.4mm shaft (transition fit)
●Carrier Material: SUS430

Magnetic Encoder Disc
●Model: MU200-25-44.5-1.4
●Number of Pole Pairs: 32 pole pairs for main track, 31 pole pairs for vernier track
●Diameter: 44.5mm
●For: 25mm shaft (transition fit)
●Carrier Material: SUS430

Magnetic Encoders
●Model: MU128-15-29-1.1
●Number of Pole Pairs: 32 pole pairs for main track, 31 pole pairs for vernier track
●Diameter: 29mm
●For: 15mm shaft (transition fit)
●Carrier Material:SUS430

Encoder Magnets
●Model: MU128-38-56-1.1
●Number of Pole Pairs: 64 pole pairs for main track, 63 pole pairs for vernier track
●Diameter: 56mm
●For:38mm shaft (transition fit)
●Carrier Material:SUS430

Magnetic Encoder Ring
●Model: MU150-18-34-1.1
●Number of Pole Pairs: 32 pole pairs for main track, 31 pole pairs for vernier track
●Diameter: 34mm
●For: 18mm shaft (transition fit)
●Carrier material: SUS430

Magnetic Ring Encoder
●Model: MU150-47.4-64-1.1
●Number of Pole Pairs: 64 pole pairs for main track, 63 pole pairs for vernier track
●Diameter: 64mm
●For: 47.4mm shaft (transition fit)
●Carrier Material: SUS430

Magnetic Encoder Disc
●Model: MU200-25-44.5-1.4
●Number of Pole Pairs: 32 pole pairs for main track, 31 pole pairs for vernier track
●Diameter: 44.5mm
●For: 25mm shaft (transition fit)
●Carrier Material: SUS430
●Light and thin: saving equipment space, compared with other companies, about 1/10 of the weight can be achieved
●Excellent environmental adaptability: adapts to harsh environments such as dust, vibration, high temperature, oil mist, etc
●Hollow large-diameter: suitable for large-diameter hollow shafts, which can be wired inside the hollow shafts of robot joints
●Optional measurement output mode: when used with iC-MU series products, incremental or absolute measurement output modes can be selected
●High resolution: used with iC-MU series products, in the case of 64 pole pairs, the angle can be measured up to 20bit (1,048,576 equal parts/revolution)
| products |
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| Model number | MU150-47.4-64-1.1 | ||||
| Code | Parameter | Remarks | Dimension | Tolerance | Unit |
| Product Physical Dimensions | |||||
| A1 |
Radial Position of Chip Center |
Distance from Axis |
28.76 |
mm |
|
| A2 |
Sensing Air Gap |
The gap between the magnet surface and the chip surface |
0.4 |
mm |
|
| A3 |
Total Height |
Product |
1.1 |
±0.1 |
mm |
| B1 |
Vernier Track Diameter |
Refers to the sensing diameter of the vernier track |
53.92 |
mm |
|
| B2 |
Main Track Diameter |
Refers to the sensing diameter of the main track |
61.11 |
mm |
|
| B3 |
Magnet Outer Diameter |
64 |
±0.2 |
mm |
|
| B4 |
Magnet Inner Diameter |
49.9 |
±0.2 |
mm |
|
| B5 |
Hole Diameter |
Carrier |
67.4 |
±0.05 |
mm |
| B6 |
Diameter |
Carrier |
64 |
mm |
|
| M1 |
Vernier Track Pole Width |
At the sensing diameter position of the vernier track |
1.34 |
mm |
|
| M2 |
Main Track Pole Width |
At the sensing diameter position of the main track |
1.5 |
mm |
|
| Magnetic Material Properties | |||||
| Hc |
Coercivity |
Temperature 20℃ |
170 | kA/m | |
| Br |
Surface Magnetic Field |
Temperature 20℃ |
25 | mT | |
| T |
Operating Temperature |
-35°C—120°C | °C | ||
| AMP |
Magnetic Field Amplitude |
Air Gap 0.4mm | 3 | mT | |
Test Data

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| Model number | MU150-18-34-1.1 | ||||
| Code | Parameter | Remarks | Dimension | Tolerance | Unit |
| Product Physical Dimensions | |||||
| A1 |
Radial Position of Chip Center |
Distance from Axis |
13.48 |
mm |
|
| A2 |
Sensing Air Gap |
The gap between the magnet surface and the chip surface |
0.4 |
mm |
|
| A3 |
Total Height |
Product |
1.1 |
±0.1 |
mm |
| B1 |
Vernier Track Diameter |
Refers to the sensing diameter of the vernier track |
23.36 |
mm |
|
| B2 |
Main Track Diameter |
Refers to the sensing diameter of the main track |
30.56 |
mm |
|
| B3 |
Magnet Outer Diameter |
34 |
±0.2 |
mm |
|
| B4 |
Magnet Inner Diameter |
20.4 |
±0.2 |
mm |
|
| B5 |
Hole Diameter |
Carrier |
18 |
mm |
|
| B6 |
Diameter |
Carrier |
34 |
mm |
|
| M1 |
Vernier Track Pole Width |
At the sensing diameter position of the vernier track |
1.18 |
mm |
|
| M2 |
Main Track Pole Width |
At the sensing diameter position of the main track |
1.5 |
mm |
|
| Magnetic Material Properties | |||||
| Hc |
Coercivity |
Temperature 20℃ |
kA/m | ||
| Br |
Surface Magnetic Field |
Temperature 20℃ |
mT | ||
| T |
Operating Temperature |
°C | |||
| AMP |
Magnetic Field Amplitude |
Air Gap 0.4mm | mT | ||

*For more basic parameters and models of magnetic encoder disks, please contact us.

Magnetic encoders use magnetic fields to track position and motion. As the encoder's disk rotates, it interacts with a magnetic sensor. This sensor detects changes in the magnetic field and generates an electrical signal representing the motion.
The controller then processes these signals, converting them into readable data on position, velocity, and direction. Magnetic encoders provide accurate and reliable feedback in both rotary and linear systems.

The magnetic and physical characteristics of encoders can be customized to your specific needs. Whether you require a unique magnetization pattern or need to adjust the physical properties of materials, these encoders can be tailored to achieve optimal performance in a variety of applications. With options such as sophisticated magnetization patterns and encoder-specific modes, you can ensure that your system operates efficiently even in harsh environments. Customization ensures precise control, reliable performance, and enhanced durability for your applications.


Automation and Robotics
Magnetic encoders play a vital role in robotics, providing precise position tracking and motion control. They ensure accurate movements in robotic arms, automated assembly lines, and other systems that require high precision.
Industrial Machinery
In industrial machinery, encoder magnets are used in CNC machines, conveyor belts, and other heavy-duty equipment. They help monitor rotational speed and position, improving efficiency and minimizing errors in manufacturing processes.
Consumer Electronics
Encoder rotary magnetic are also found in consumer electronics, such as printers and digital cameras, where they help in the precise positioning of moving parts, ensuring smooth performance and functionality.
Automotive
In the automotive industry, rotary encoder magnets are used for position tracking in systems like electric vehicle (EV) motors, steering, and suspension systems, contributing to more efficient and reliable vehicle performance.
1. Ensure the rotational runout after installation is less than the recommended value.
2. Press gently during installation; adhesive may be used if necessary.
3. Ensure the gap between the double-row magnetic rings and the MU series product, as well as the installation position deviation, is less than the recommended values.
4. Do not use in environments where foreign matter (e.g., iron powder) may adhere.
5. When using this product in equipment that generates a magnetic field, please confirm with a sample whether any impact is present.
6. Do not use, store, or transport this product outside the specified temperature range.
7. Please confirm the angular error after installation on the actual equipment.
8. Ensure the magnetic strip (rubber magnet) is not damaged.
9. Do not subject this product to strong impacts.
10. Do not continue to use this product if it is dropped.
11. Do not immerse this product in liquids (water, oil, etc.).
12. Do not remove and reuse this product after it has been loaded.

Raw Material Processing
We begin by carefully selecting and processing high-quality raw materials to ensure the best performance of your encoders.

Hydraulic Forming
Using advanced hydraulic forming techniques, we shape components with precision to meet your specifications.

Trimming
We trim parts to exact measurements, ensuring smooth edges and optimal fit for each encoder.

Magnetic Testing
Each encoder undergoes thorough magnetic testing to verify its performance and reliability.

Product Packaging
After quality checks, we package your encoders securely to prevent damage during transit.

Warehousing and Shipping
Your products are stored in our well-organized warehouse and shipped promptly to meet your delivery needs.
Choose our magnetic encoder ring for unmatched precision, durability, and reliability. With customizable magnetic and physical properties, our encoders are designed to meet the unique demands of your application. Whether you need high accuracy in robotics, CNC machines, or automation systems, our encoders provide consistent performance in harsh environments. Plus, with various magnetization patterns available, you can optimize your system for better efficiency and longevity. Trust our magnet for encoder solutions to deliver superior quality and reliability for your projects.

Q: Can encoder magnets be customized?
A: Yes, encoder magnets can be customized to meet specific requirements. Whether it's adjusting magnetization patterns, physical size, or material properties, customization ensures optimal performance in your application.
Q: Are encoder magnets durable in harsh environments?
A: Yes, encoder magnets are highly durable and resistant to dust, dirt, and vibrations, making them ideal for use in harsh environments where reliability is critical, such as manufacturing plants or outdoor equipment.
Q: How do encoder magnets improve system accuracy?
A: By using precise magnetization patterns and high-quality materials, encoder magnets ensure accurate feedback on position, speed, and direction. This enhances the overall system's accuracy, ensuring smooth and efficient operation.
Q: What is the benefit of multi-polar magnetization in encoder magnets?
A: Multi-polar magnetization creates multiple poles on the magnet, allowing for higher resolution and more precise position detection. This is especially beneficial in systems requiring fine adjustments or high-precision control.
Q: Do encoder magnets require maintenance?
A: Encoder magnets require minimal maintenance, especially in non-contact designs. Their durability and resistance to environmental factors mean they are less prone to wear, reducing the need for frequent maintenance and extending their lifespan.