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AW57BLY Series — 57mm BLDC Motor with Planetary Gearbox
The AW57BLY series pairs Apexwell's 57mm-diameter, 24V, 4-pole brushless DC motor with the same M56GXR planetary gearbox used on the AW57BLF series, scaling rated output power from 17W to 140W across five body lengths. With 14 total reduction ratios from 3.6:1 to 326:1 and up to 60 N·m of maximum permissible output torque, this series is the lower-power tier of Apexwell's 57mm BLDC planetary-gearmotor platform, sized for lighter loads than the 8-pole AW57BLF.
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 | 4 |
| Number of Phases | 3 |
| Nominal Voltage | 24 VDC |
| Rated Speed | 3,000 RPM ±10% |
Motor Model Comparison
| Model | Rated Torque | Rated Current | Output Power | Peak Torque | Peak Current | Body Length | Mass |
|---|---|---|---|---|---|---|---|
| AW57BLY45-230 | 0.055 N·m | 1.2 A | 17 W | 0.165 N·m | 3.6 A | 45 mm | 0.40 kg |
| AW57BLY55-230 | 0.11 N·m | 2.2 A | 35 W | 0.33 N·m | 6.6 A | 55 mm | 0.50 kg |
| AW57BLY75-230 | 0.22 N·m | 4.1 A | 70 W | 0.66 N·m | 12.3 A | 75 mm | 0.72 kg |
| AW57BLY95-230 | 0.33 N·m | 5.9 A | 105 W | 0.99 N·m | 17.7 A | 95 mm | 1.00 kg |
| AW57BLY115-230 | 0.45 N·m | 7.7 A | 140 W | 1.35 N·m | 23.1 A | 115 mm | 1.24 kg |
Torque constant ranges from 0.039 to 0.061 N·m/A; back-EMF constant ranges from 3.91 to 4.68 Vrms/kRPM. Rotor inertia scales from 68 to 268 g·cm² with body length.
Planetary Gearbox — General Parameters
| Parameter | Value |
|---|---|
| Gear Material | Metal (powder metal), optional |
| Radial Load (at 10mm) | ≤20.0 kgf |
| Shaft Axial Load | ≤12.0 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 | ≤320 N |
M56GXR Planetary Gearbox Specifications
| Parameter | 1-Stage | 2-Stage | 3-Stage | 4-Stage |
|---|---|---|---|---|
| Reduction Ratio | 3.6, 4.3 | 13, 15, 18 | 47, 55, 65, 77 | 168, 198, 234, 276, 326 |
| Gearbox Length (L1) | 40.5 mm | 51.8 mm | 63.1 mm | 74.4 mm |
| Rated Output Torque | 2.0 N·m | 8.0 N·m | 16.0 N·m | 20.0 N·m |
| Max Torque Moment | 6.0 N·m | 25.0 N·m | 50.0 N·m | 60.0 N·m |
| Transmission Efficiency | 80% | 70% | 60% | 50% |
| Weight | 500 g | 600 g | 700 g | 850 g |
Fourteen reduction ratios are available in total (3.6 to 326:1) — identical to the AW57BLF gearbox, since both series share the same M56GXR platform.
Wiring
Each AW57BLY 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 17W to 140W and reduction ratios up to 326:1, the AW57BLY series fits light conveyor rollers, small pump and valve actuation, light robotics joints, and general automation equipment where the AW57BLF's power range is more than the application needs.
Why Choose the AW57BLY 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 platform is shared with the AW57BLF, a design can move between the two motor variants without changing gearbox dimensions or ratio options. For applications needing more power at a similar body length, see the AW57BLF series, which shares this same gearbox platform with an 8-pole motor. 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.
