Parameter Comparison of Four Encoder Motors
1. Basic Parameter Comparison
| Motor Model |
Rated Voltage |
Motor Type |
Reduction Ratio |
| JGA27-310R20 |
7.4V |
Permanent magnet brushed |
Fixed 1:20 |
| 520 Series: JGB37-520R20-12, R30-12, R60-12, R90-12 |
12V |
Permanent magnet brushed |
Multiple options: 1:20, 1:30, 1:60, or 1:90 |
| 528-8V High-Torque Encoder Motor |
8V with a motor power supply range of 7 to 13V and a maximum of 18V |
Permanent magnet brushed |
Fixed 131:1 |
| TT Geared Motor with Metal Shaft and Hall Encoder |
3V to 12V with a recommended range of 6V to 9V |
DC geared motor with Hall encoder |
Fixed 1:84 |
2. Performance Parameter Comparison
2.1 Speed
| Motor Model |
Rated Speed After Reduction in rpm |
Features |
| JGA27-310R20 |
450±10 |
Highest speed, making it suitable for low-load applications requiring high velocity. |
| 520 series |
85-390, decreasing as the reduction ratio increases |
A larger reduction ratio results in a lower speed, such as 390rpm for 1:20 and 85rpm for 1:90. |
| 528-8V |
90±10% |
Lowest speed, making it suitable for low-speed and high-torque requirements. |
| TT geared motor |
110 at no-load |
Low stall current, providing efficient power consumption control. |
2.2 Torque
1 N·m is approximately equal to 10.2 kg·cm.
| Motor Model |
Rated Torque |
Stall Torque |
Features |
| JGA27-310R20 |
0.4kg·cm |
≥1.0kg·cm |
Lowest torque, making it ideal for low-load applications. |
| 520 series |
1-2.6kg·cm |
3.7-15kg·cm |
A larger reduction ratio yields higher torque, and the 1:90 version delivers the maximum stall torque in the series at 15kg·cm. |
| 528-8V |
0.484N·m, which is approximately 4.94kg·cm |
3N·m, which is approximately 30.6kg·cm |
Stall torque is significantly higher than that of other models, making it suitable for heavy-load applications. |
| TT geared motor |
2.3N·m, which is approximately 23.46kg·cm |
|
High torque, balancing load capacity and operational flexibility. |
2.3 Current and Power
| Motor Model |
Rated Current |
Stall Current |
Rated Power |
Features |
| JGA27-310R20 |
≤0.65A |
≤1.4A |
4.8W |
Lowest current and power, resulting in low energy consumption. |
| 520 series |
0.36-0.53A |
3.2-3.9A |
7-9W |
Moderate power, and the 1:20 model has the maximum stall current of 3.9A. |
| 528-8V |
0.3A |
5.7A |
2.4W |
Highest stall current at 5.7A, but the rated power remains low. |
| TT geared motor |
100mA at no-load |
1.2A |
|
Low stall current, ensuring good energy efficiency. |
3. Encoder Feature Comparison
| Motor Type |
Encoder Type |
Signal Output Phases |
Pulse Count or Line Count |
Supply Voltage |
Special Functions |
| JGA27-310R20 |
AB-phase incremental Hall encoder |
Phase A and Phase B square waves |
13 lines on the magnetic ring |
3.3-5V |
Equipped with integrated pull-up circuitry and wave shaping, allowing direct reading by microcontrollers. |
| 520 series |
AB dual-phase Hall encoder |
Phase A and Phase B square waves |
11 lines on the magnetic ring |
3.3-5V |
Equipped with integrated pull-up circuitry and wave shaping, allowing direct reading by microcontrollers. |
| 528-8V |
Hall encoder |
Phase C1 and Phase C2 square waves |
11 by 131 lines, measured at the gearbox output shaft |
3.3-5V |
Equipped with integrated pull-up circuitry and wave shaping, allowing direct reading by microcontrollers. |
| TT geared motor |
Hall sensor with a magnetic ring |
Phase H1 and Phase H2 square waves |
6 pulses per resolution of the magnetic ring, and for a full wheel resolution, 504 pulses for single-phase or 2016 pulses for quadrature decoding |
3.3-5V |
Supports quadrature counting to improve measurement accuracy. |
4. Structural and Port Comparison
| Motor Type |
Shaft Specification |
Port Type |
Pin Definitions |
| JGA27-310R20 |
3mm D-shaped eccentric shaft |
6-pin PH2.0 |
Motor power+ / encoder+ / Phase A / Phase B / encoder- / motor power- |
| 520 series |
6mm diameter D-shaped eccentric shaft |
6-pin PH2.0 |
Motor power+ / encoder+ / Phase A / Phase B / encoder- / motor power- |
| 528-8V |
6mm diameter D-shaped eccentric shaft |
6-pin PH2.0 |
Motor power+ / encoder+ / Phase A / Phase B / encoder- / motor power- |
| TT geared motor output shaft |
|
6-pin PH1.25 |
Encoder- / H1 square wave / H2 square wave / encoder+ / motor power+ / motor power- |
5. Application Scenario Differences
| Motor Model |
Core Advantages |
Typical Application Scenarios |
| JGA27-310R20 |
Compact size, high precision, high speed, and low load capacity |
Small precision devices and lightweight DIY projects, such as small robotic arm joints or miniature conveyor belts. |
| 520 series |
Multiple selectable reduction ratios, moderate torque, and compatibility with 12V systems |
Smart robotic cars, including Mecanum wheel robots and navigation positioning cars, require precise speed and direction control. |
| 528-8V |
High torque of 3N·m, low speed, and wide voltage adaptability |
Heavy-load equipment, such as small logistics robots or high-load transmission mechanisms. |
| TT geared motor |
Moderate torque, quadrature decoding support for high-precision measurement, and lightweight design |
DIY robotic cars with higher speed requirements and small to medium automation setups, such as desktop sorting systems. |
6. Summary
The four motor models exhibit distinct differences in performance, structure, and applications. Choosing the right motor involves balancing the application’s load, speed, power, and precision requirements.
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The JGA27-310R20 focuses on miniature high precision and high speed, making it suitable for low-load precision scenarios.
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The 520 Series stands out for its flexibility with multiple reduction ratios, meeting the needs of most smart robotic cars.
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The 528-8V leverages its high torque advantage to focus on heavy-load and low-speed applications.
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The TT geared motor balances precision via quadrature decoding and a lightweight design, making it ideal for small to medium DIY projects.