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LS57E12-D2B40 Closed-loop stepper motors

LEESN new generation of 57mm*57mm(NEMA23) two-phase 1.8° closed-loop stepper motor, mounting hole distance 47.14mm, built-in 1000-wire encoder, with miniaturization design, low heating, high stability, high consistency, greater torque, higher performance, recommended for the driver DE57.


① Spindle mode:
Provide single flat, double flat, keyway, hobbing and other shaft delivery modes;


② Lead mode:
According to different application requirements, provide customized winding and routing methods;

③ Accessories selection:
Provide a variety of accessories for the stepper motor, such as planetary reducer, power off brake, etc.


Closed-loop stepper motor is a kind of stepper motor system, which is different from the traditional open-loop stepper motor system. It has a feedback control mechanism, which can monitor and correct the position error of the motor in real time to improve the performance and accuracy.

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Specification parameters
  • Phase number
    two-phase
  • Step Angle
    1.8 °
  • Step Angle error
    Below ±0.09°
  • Fuselage length
    77mm
  • Axis length
    21mm
  • Shaft diameter
    8mm
  • Rated current
    4.0 A
  • Holding torque
    1.2 N.M
  • Phase resistance
    0.65 Ω
  • Phase inductance
    2.65 mH
  • Moment of inertia
    ≈220g.c㎡
  • weight
    ≈850g
  • Service temperature range
    0 ℃ + 50 ℃
  • Service humidity range
    20%RH - 90%RH

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