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AW57BLF Series — 57mm BLDC Motor with Precision Planetary Gearbox
The AW57BLF series pairs Apexwell's 57mm-diameter brushless DC motor with an HPR60-L1/L2 precision planetary gearbox, scaling rated output power from 62W to 250W across four body lengths, at either 24V or 48V nominal voltage. This series shares its precision gearbox platform with the AW60BLF — the same 15 reduction ratios from 3:1 to 100:1 and the same up-to-32 N·m rated output torque — so it delivers the same gearbox output from a lower-current motor stack.
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 |
Motor Model Comparison
| Model | Nominal Voltage | Rated Torque | Rated Current | Output Power | Peak Torque | Peak Current | Body Length | Mass |
|---|---|---|---|---|---|---|---|---|
| AW57BLF60-230 | 24 VDC | 0.20 N·m | 3.9 A | 62 W | 0.6 N·m | 11.7 A | 61 mm | 0.60 kg |
| AW57BLF80-230 | 24 VDC | 0.40 N·m | 7.5 A | 125 W | 1.2 N·m | 22.5 A | 80 mm | 0.92 kg |
| AW57BLF101-230 | 24 VDC | 0.60 N·m | 11.5 A | 188 W | 1.8 N·m | 34.5 A | 101 mm | 1.23 kg |
| AW57BLF122-430 | 48 VDC | 0.80 N·m | 6.6 A | 250 W | 2.4 N·m | 19.8 A | 122 mm | 1.60 kg |
Rated speed is 3,000 RPM ±10% across all models. Torque constant ranges from 0.047 to 0.107 N·m/A; back-EMF constant ranges from 4.08 to 9.04 Vrms/kRPM. Rotor inertia scales from 184 to 602 g·cm² with body length.
Precision Planetary Gearbox — General Parameters
| Parameter | Value |
|---|---|
| Gear Material | Metal |
| Radial Load (at 10mm) | ≤400 N |
| Shaft Axial Load | ≤230 N |
| Backlash | ≤15 arcmin (1-stage) / ≤20 arcmin (2-stage) |
| Noise | ≤55 dB |
| Protection Level | IP54 |
| Life Span | 20,000 hours |
| Working Temperature | -20°C to +150°C |
HPR60-L1/L2 Precision Planetary Gearbox Specifications
| Parameter | 1-Stage | 2-Stage |
|---|---|---|
| Reduction Ratio | 3, 4, 5, 7, 10 | 16, 20, 25, 28, 30, 35, 40, 50, 70, 100 |
| Gearbox Length (L1) | 57 mm | 73 mm |
| Rated Output Torque | 10–28 N·m | 10–32 N·m |
| Transmission Efficiency | 96% | 94% |
| Weight | 700 g | 900 g |
Momentary torque moment is rated at two times the rated output torque across both stages. 15 reduction ratios are available in total (3 to 100:1) — identical to the AW60BLF gearbox, since both series share the same HPR60-L1/L2 platform.
Wiring
Each AW57BLF 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 backlash as tight as ≤15 arcmin, an IP54 protection rating, and gearbox torque up to 32 N·m, the AW57BLF precision series fits industrial robotic joints, precision CNC and index tables, semiconductor and electronics production equipment, and other positioning tasks where standard-tolerance gearing isn't accurate enough.
Why Choose the AW57BLF Precision Gearmotor
Backlash of ≤15–20 arcmin makes this series suitable for applications where positioning repeatability matters more than cost, even at industrial torque levels. Because the gearbox platform is shared with the AW60BLF, a design can move between the two motor frames without changing gearbox dimensions or ratio options. The IP54 rating and -20°C to +150°C working range extend where the gearbox can be used compared with an open, standard-tolerance planetary unit, and a 20,000-hour rated life supports continuous-duty applications. 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.
