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Frameless Motor
Our frameless motors are built on ultra-high torque density. Beyond this, they excel in dynamic response, precision, thermal management, efficiency, noise, and weight.
Features
Our frameless motors are exceptional in the following advantages:
- High Torque Density
- Low Torque Ripple
- High Dynamic Response
- High Precision: Compatible with 32-bit encoders, as a frameless servo motor. Of course, Hall sensors are also optional.
- Enhanced Thermal Management: low heat generation and better heat dissipation
- Compact & Light: Larger hollow bore and lighter weight.
- Efficient: Higher efficiency brings better heat dissipation, lower energy consumption.
- Adaptable to Harsh Environments: Insulation class H. Can operate stably within a motor temperature range of -40°C to 155°C, and in ambient temperatures from -40°C to 80°C.
Select frameless motors that suit your equipment:
Performance data
Our motors are compatible with the following voltages: 12V, 24V, 36V, 48V. If you have specific requirements or need additional data, please feel free to contact us.
| Model | FM 2506 | FM 2510 | FM 3808 | FM 3816 | FM 5010 | FM 5016 | FM 7013 | FM 7021 | FM 8507 | FM 8516 | FM 8525 | FM 8527 | FM 11527 | BOT FM 11513 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Power (W) | 70 | 52 | 95 | 205 | 195 | 183 | 235 | 260 | 405 | 420 | 415 | 425 | 750 | 272 |
| Rated Voltage (V) | 24 | 24 | 24 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 |
| Rated Torque (Nm) | 0.032 | 0.048 | 0.10 | 0.23 | 0.30 | 0.50 | 0.67 | 1.25 | 0.44 | 1.44 | 2.33 | 2.67 | 5.50 | 2.60 |
| Peak Torque (Nm) | 0.100 | 0.200 | 0.40 | 0.76 | 1.00 | 1.40 | 2.18 | 4.00 | 1.20 | 4.55 | 7.40 | 8.45 | 12.50 | 21.66 |
| Rated Speed (rpm) | 20,650 | 10,300 | 9,000 | 8,500 | 6,200 | 3,500 | 3,400 | 2,000 | 9,000 | 2,800 | 1,700 | 1,500 | 1,300 | 1,000 |
| Motor Constant (Nm/√W) | 0.014 | 0.020 | 0.036 | 0.060 | 0.084 | 0.098 | 0.152 | 0.233 | 0.110 | 0.280 | 0.443 | 0.480 | 0.760 | 0.555 |
| Rotor Inertia (kgcm2) | 0.0017 | 0.0026 | 0.0110 | 0.023 | 0.062 | 0.100 | 0.231 | 0.370 | 0.328 | 0.724 | 1.16 | 1.25 | 4.32 | 1.96 |
| Torque Ripple @ Rated Current | 2.45% | 2.93% | 4.62% | 4.26% | 3.17% | 3.35% | 2.43% | 2.24% | 4.76% | 3.26% | 3.14% | 2.83% | 2.88% | 3.30% |
| Torque Ripple @ Peak Current | 1.74% | 2.01% | 1.78% | 1.78% | 2.16% | 2.58% | 2.40% | 2.21% | 3.06% | 2.59% | 2.64% | 2.64% | 2.24% | 2.41% |
| Max Efficiency (%) | 88 | 85 | 88 | 88 | 89 | 88 | 90 | 90 | 92 | 91 | 91 | 91 | 93 | 93 |
| Detailed Specs | Learn More> | Learn More> | Learn More> | Learn More> | Learn More> | Learn More> | Learn More> | Learn More> | Learn More> | Learn More> | Learn More> | Learn More> | Learn More> | Learn More> |
Size
| Model | FM 2506 | FM 2510 | FM 3808 | FM 3816 | FM 5010 | FM 5016 | FM 7013 | FM 7021 | FM 8507 | FM 8516 | FM 8525 | FM 8527 | FM 11527 | BOT FM 11513 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Outer Diameter D / (mm) | 25.0 | 25.0 | 38.0 | 38.0 | 50.0 | 50.0 | 70.0 | 70.0 | 85.0 | 85.0 | 85.0 | 85.0 | 115.0 | 115.0 |
| Inner Diameter d / (mm) | 11.6 | 11.6 | 18.0 | 18.0 | 30.0 | 30.0 | 42.0 | 42.0 | 52.0 | 52.0 | 52.0 | 52.0 | 74.0 | 89.5 |
| Stator Length L / (mm) | 11.3 | 15.2 | 12.5 | 19.0 | 13.0 | 20.0 | 17.5 | 28.0 | 13.0 | 26.0 | 38.0 | 41.6 | 40.0 | 25.0 |
| Weight / (g) | 16 | 24 | 55 | 82 | 83 | 135 | 200 | 320 | 192 | 370 | 545 | 670 | 1,050 | 430 |
Design for rapid dynamic response and precise control
We have previously designed motors for aircraft starter-generator and electric vehicles, with advanced design and craftsmanship. We are now applying these technologies to our frameless motors, ensuring they deliver industry-leading performance.
- Unique Flat Wire Winding:
- High fill factor, low copper loss, better cooling, minimal air gaps, and increased stability.
- Ensures consistent winding for smooth operation and precise control.
- Tiny and Thin Stator Laminations:
- Reduces eddy current and hysteresis losses for better efficiency.
- Boosts dynamic performance and precise high-frequency control.
- Generates less heat, reducing vibration and noise.
- Increases strength and stability.
- Halbach Electromagnetic Design:
- Provides stronger torque, lighter weight, and smoother operation.
- Low Cogging Design:
- Reduces cogging torque for smoother output.
- Decreases vibration and noise.