General Specification:
The 57BYA Series Brushless DC Motors are designed for high torque applications. They feature a Delta winding type and a Hall effect angle of 120 degrees electrical angle. The motors have a radial play of 0.025mm with a force of 460g and an end play of 0.025mm with a force of 400g. The maximum radial force is 75N at 20mm from the flange, and the maximum axial force is 15N. The insulation class is B, with a dielectric strength of 500VDC for one minute and an insulation resistance of at least 100MΩ at 500VDC.

Performance Data:
The motors have 4 poles and 3 phases, with a rated voltage of 24 VDC. The rated speed varies between 2000 and 6000 RPM depending on the model. Continuous stall torque ranges from 0.096 to 0.72 N.m, while rated torque ranges from 0.08 to 0.6 N.m. Rated power output ranges from 33.5 to 251 W. Peak torque ranges from 0.24 to 1.8 N.m, and peak current ranges from 5.58 to 41.6 A. The torque constant varies between 0.026 and 0.081 Nm/A, and the back EMF ranges from 3 to 8.57 V/KRPM. Rotor inertia varies from 31 to 242 g.cm², and body length ranges from 44 to 114 mm. The motors operate within a voltage range of 12 to 80 VDC and a speed range of 2000 to 6000 RPM. The weight of the motors ranges from 0.25 to 1.25 kg.

Model Variants:
The document lists several model variants, including 57BYA044, 57BYA054, 57BYA074, 57BYA094, and 57BYA114, each with different specifications for rated speed, torque, power, and other parameters.