This is the two-phase closed-loop stepper motor brake series with 1000-line encoders, with frame sizes covering 42/57/60/86mm and a step angle of 1.8°, built-in 1000-line encoders and integrated brake function. The static torque ranges from 0.5-12N·m, rated current 1.5-6.0A, compatible with 2HSS57-N-42-SC, 2HSS57-N-SC, 2HSS86H-N-SC series drives. Different frame models correspond to different body lengths and shaft diameter specifications, supporting customization of non-standard shaft diameters, suitable for two-phase closed-loop stepper motion control scenarios requiring power-off self-locking.