42 mm Brushless DC Motor Compact High-Speed BLDC Motor
42 mm brushless DC motors designed for high-speed rotary motion applications requiring Hall sensor feedback, smooth speed control, and efficient torque output in robotics, laboratory automation, medical devices, AGV/AMR systems, and industrial automation.
The 42 mm round-body BLDC motor family includes 42ZWC75L models with rated torque up to 0.2 N·m, rated power up to 209.4 W, and optional planetary gearbox and encoder configurations for precision motion applications.
Motor Characteristics
Swipe left or right to view the full table.
| Specification | Unit | 42ZWC75L-1 | 42ZWC75L-2 |
|---|---|---|---|
| Body Length (LT) | mm | 73±0.5 | 73±0.5 |
| Pole Pairs | - | 2 | 2 |
| Terminal Resistance, Phase-Phase | Ω | 0.24 | 0.19 |
| Terminal Inductance, Phase-Phase | mH | 0.15 | 0.12 |
| Winding Connection Method | - | Star shape | Star shape |
| Insulation Class | - | B | B |
| Duty Type | - | S2 | S2 |
| Feedback Method | - | Hall sensors | Hall sensors |
| Commutation Angle | - | 120° | 120° |
| Insulation Strength | - | 500VAC/1KHz/1mA/1s | 500VAC/1KHz/1mA/1s |
| Insulation Resistance | - | 100 MOhm 20C | 100 MOhm 20C |
| Weight | g | 425.8 | 425.8 |
| Rated Voltage | V | 48 | 24 |
| Rated Power | W | 209.4 | 83 |
| Rated Torque | N·m | 0.2 | 0.08 |
| Rated Speed | RPM | 10000 | 10000 |
| Rated Current | A | 5.5 | 4.3 |
| No Load Speed | RPM | 12000 | 12000 |
| No Load Current | A | 0.86 | 0.7 |
| Motor Efficiency | % | 80 | 80 |
| Noise | dB | <50 | <50 |
| Enclosure-Ambient Thermal Resistance | K/W | 0.085 | 0.25 |
| Ambient Temperature | ℃ | 25 | 25 |
| Maximum Winding Temperature | ℃ | 75 | 75 |
| Torque Constant | N·m/A | 0.036 | 0.019 |
| Back-EMF Constant / Effective Value | V/Krpm | 3.77 | 1.99 |
| Peak Torque | N·m | 0.6 | 0.24 |
| Peak Current | A | 16.5 | 12.9 |
| Rotor Inertia | Kg·cm² | 0.084 | 0.084 |
Dimensional Drawing
Torque Performance Curves
Lead Wire Configuration
Swipe left or right to view the full table.
| Lead-Out Type | Lead-Out Color | Function |
|---|---|---|
| UL3265 AWG26 | Yellow | Hall U (Hu) |
| UL3265 AWG26 | Green | Hall V (Hv) |
| UL3265 AWG26 | Blue | Hall W (Hw) |
| UL3265 AWG26 | Red | Hall Power Supply Positive (Vcc) |
| UL3265 AWG26 | Black | Hall Power Supply Negative (GND) |
| UL3265 AWG22 | Yellow | U Phase |
| UL3265 AWG22 | Green | V Phase |
| UL3265 AWG22 | Blue | W Phase |
Customization Options
Gearbox Integration
Precision planetary gearbox and silent gearbox options can help increase output torque or reduce speed.
Encoder Feedback
Add incremental encoder feedback for improved speed control, positioning feedback, and closed-loop performance.
Shaft Modifications
Customize shaft length, flats, diameter, or mounting features to support compact mechanical integration.
Lead Wire & Connector Options
Modify wire length, routing, connectors, or cable assemblies to simplify installation and reduce assembly time.
Precision Planetary Gearbox
Swipe left or right to view the full table.
| Stage | - | Stage 1 | Stage 2 | Stage 3 | Stage 4 |
|---|---|---|---|---|---|
| Gear ratio | X : 1 | 3.9, 5.3 | 16, 21, 28 | 62, 83, 111, 150 | 243, 326, 439, 590, 794 |
| Max. backlash | ° | 0.3 | 0.4 | 0.5 | 0.6 |
| Max. continuous output power | W | 480 | 200 | 85 | 20 |
| Max. peak output power | W | 600 | 250 | 106 | 25 |
| Max. continuous input speed | rpm | 6000 | 6000 | 6000 | 6000 |
| Max. peak input speed | rpm | 7500 | 7500 | 7500 | 7500 |
| Max. continuous torque | N.m | 3.0 | 7.5 | 15 | 15 |
| Max. peak torque | N.m | 4.5 | 11.3 | 22.5 | 22.5 |
| Max. efficiency | % | 90 | 81 | 72 | 64 |
| Weight | g | 252 | 405 | 476 | 544 |
| Gearbox length L | mm | 36.1 | 54.9 | 63.6 | 72.4 |
Downloads
Download product drawings and CAD files for the round-body 42 mm BLDC motor models.
Part Number Builder
42 mm motor diameter
Round-body BLDC motor series
Body length designation
Round-body motor configuration designation
Version identifier
Hall sensor feedback is standard
Rated voltage options by model
Winding, shaft, cable, connector, gearbox, and encoder options may be customized.
Need Help Selecting the Right 42 mm BLDC Motor?
Whether you need a standard motor, integrated gearbox, encoder feedback, or a custom winding, our engineering team can help you select the right solution for your application.