Brushless motor 57ZWS50X-1

DCBLDC24 V

Product overview
The 57mm brushless DC motor series delivers rated power up to 103.7 W (triple-stack variant) and a maximum rated torque of 0.33 N·m. Standard configuration features star winding, 5 pole pairs (10 poles) and Hall-sensor feedback. Optional accessories: gearbox and incremental encoder.

Motor characteristics
Motor part numbers: 57ZWS50X-1 | 57ZWS63X-1 | 57ZWS75X-1
Body length (LT) (mm): 50±1 | 63±1 | 75±1
Rated voltage: 24 V (all variants)
Rated power (W): 37.4 | 69.1 | 103.7
Rated torque (N·m): 0.119 | 0.22 | 0.33
Rated speed (RPM): 3000 (all variants)
Rated current (A): 2.2 | 4.1 | 6
No-load speed / current: 4000 RPM / 0.25 A | 4000 RPM / 0.5 A | 4000 RPM / 0.75 A
Efficiency (%): 78 | 80 | 82
Peak torque / peak current: 0.357 N·m / 6.6 A | 0.66 N·m / 12.3 A | 0.99 N·m / 18 A
Torque constant: ~0.054–0.055 N·m/A
Back-EMF constant (V/Krpm): 5.66 (effective value)
Rotor inertia (Kg·cm²): 0.19 | 0.38 | 0.56
Weight (kg): 0.42 | 0.65 | 0.87
Winding connection: Star
Pole pairs: 5
Feedback: Hall sensors (commutation angle 120°)
Insulation class: B; insulation resistance: 100 MΩ (20°C); withstand voltage: 500VAC/1KHz/1mA/1s
Noise (measured at 1 m, ambient 20 dB): <50 dB

Dimensional drawing
Dimensional drawings provided for LT variants (refer to Motor characteristics table). Drawings include mounting details and lead-out layouts.

Lead-out / Wiring
Hall signals (UL3265 AWG26): Yellow = Hall U (Hu); Green = Hall V (Hv); Blue = Hall W (Hw); Red = Hall Vcc; Black = Hall GND.
Power phases (UL3265 AWG18): Yellow = U phase; Green = V phase; Blue = W phase.

Torque performance curves
Torque vs speed curves are available separately for each variant: 57ZWS50X-1, 57ZWS63X-1 and 57ZWS75X-1. Curves support selection for target torque and speed requirements.

Technical specifications

• Series: 57ZWS series (variants: 57ZWS50X-1, 57ZWS63X-1, 57ZWS75X-1).
• Rated voltage: 24 V.
• Rated power: 37.4 W (57ZWS50X-1) / 69.1 W (57ZWS63X-1) / 103.7 W (57ZWS75X-1).
• Rated torque: 0.119 N·m / 0.22 N·m / 0.33 N·m.
• Rated speed: 3000 RPM; No-load speed: 4000 RPM.
• Winding: Star; Pole pairs: 5; Commutation angle: 120°; Feedback: Hall sensors.
• Insulation: Class B; withstand voltage: 500VAC/1KHz/1mA/1s; insulation resistance: 100 MΩ (20°C).
• Options: gearbox and incremental encoder available.