Previous
Next
AW42BLF Series — 42mm BLDC Motor with Planetary Gearbox
The AW42BLF series pairs Apexwell's 42mm-diameter, 24V brushless DC motor with an M42GXR planetary gearbox, scaling rated output power from 26W to 104W across four body lengths. With four gear-train stages, 14 total reduction ratios from 3.7:1 to 720:1, and up to 14.71 N·m of maximum permissible output torque, this series is the smallest frame in Apexwell's BLDC planetary-gearmotor platform.
Shared Motor Specifications (all models)
| Parameter | Value |
|---|---|
| Winding Configuration | Star (Y) |
| Hall Sensor Position | 120° |
| Insulation Class | Class B |
| Ambient Temperature | -20°C to +50°C |
| Insulation Resistance | ≥100 MΩ (500 VDC) |
| Dielectric Strength | 700 VAC, 1 minute |
| Number of Poles | 8 |
| Number of Phases | 3 |
| Nominal Voltage | 24 VDC |
| Rated Speed | 4,000 RPM ±10% |
Motor Model Comparison
| Model | Rated Torque | Rated Current | Output Power | Peak Torque | Peak Current | Body Length | Mass |
|---|---|---|---|---|---|---|---|
| AW42BLF40-240 | 0.0625 N·m | 1.9 A | 26 W | 0.18 N·m | 5.7 A | 40 mm | 0.27 kg |
| AW42BLF60-240 | 0.13 N·m | 3.1 A | 54 W | 0.39 N·m | 9.3 A | 60 mm | 0.50 kg |
| AW42BLF80-240 | 0.188 N·m | 4.5 A | 78 W | 0.55 N·m | 13.5 A | 80 mm | 0.65 kg |
| AW42BLF100-240 | 0.25 N·m | 6.2 A | 104 W | 0.75 N·m | 18.6 A | 100 mm | 0.85 kg |
Torque constant ranges from 0.033 to 0.042 N·m/A; back-EMF constant ranges from 3.22 to 3.92 Vrms/kRPM. Rotor inertia scales from 66 to 217 g·cm² with body length.
Planetary Gearbox — General Parameters
| Parameter | Value |
|---|---|
| Gear Material | Metal (powder metal), optional |
| Radial Load (at 10mm) | ≤15.0 kgf |
| Shaft Axial Load | ≤8.0 kgf |
| Radial Play of Shaft | ≤0.05 mm |
| Thrust Play of Shaft | ≤0.3 mm |
| Backlash (1-stage, no load) | ≤3° |
| Max Shaft Press-Fit Force | ≤250 N |
M42GXR Planetary Gearbox Specifications
| Parameter | 1-Stage | 2-Stage | 3-Stage | 4-Stage |
|---|---|---|---|---|
| Reduction Ratio | 3.7, 5.2 | 14, 19, 27 | 51, 71, 100, 139 | 189, 264, 369, 516, 720 |
| Gearbox Length (L1) | 41.3 mm | 51.6 mm | 64.4 mm | 74.7 mm |
| Rated Output Torque | 0.49 N·m | 1.96 N·m | 3.92 N·m | 4.90 N·m |
| Max Torque Moment | 1.47 N·m | 5.88 N·m | 11.77 N·m | 14.71 N·m |
| Transmission Efficiency | 80% | 70% | 60% | 50% |
| Weight | 220 g | 300 g | 360 g | 420 g |
Fourteen reduction ratios are available in total (3.7 to 720:1) across four gear-train stages, letting a single motor selection be tuned across a wide speed/torque window without changing the mounting footprint.
Wiring
Each AW42BLF motor exits with a 3-wire star-connected power cable for the U/V/W windings and a separate Hall sensor cable (+5VDC, GND, HU, HV, HW) at a 120° Hall electrical angle for standard 6-step commutation.
Typical Applications
With output power from 26W to 104W and reduction ratios up to 720:1, the AW42BLF series fits small conveyor rollers, pump and valve actuation, light robotics joints, and general automation equipment where a compact 42mm gearmotor footprint is preferred over a larger frame.
Why Choose the AW42BLF Gearmotor
Fourteen reduction ratios across four gear-train stages let one motor selection be tuned across a wide speed/torque window without redesigning the mechanical interface. Because the gearbox is factory-fitted and tested as a complete unit, output shaft alignment and gear mesh are verified before the motor ships. Custom shaft configurations and encoder feedback are available on request.
We can customize the electrical parameters of the motor and geometric dimensions such as the motor output shaft size according to customer requirements. Accessories including pulleys, eccentric gearboxes, planetary gearboxes and encoders can also be added. For more products and detailed specifications, please download the product catalog from the Download Center.
