ORLIN stepper motorStepper motors (sometimes called step motors or stepping motors) provide low cost motion control without the need for feedback devices such as encoders. However, if greater accuracy or step-loss detection is required, it is possible to use encoders with stepper motors and ORLIN also has a range of preconfigured closed loop stepper motors available.

Typical number of steps per revolution is 200, but this may be increased by microstepping for greater positioning resolution and operating smoothness. With the appropriate drive, microstepping can increase the resolution up to 51200 steps/rev.

ORLIN Technologies offers a range of stepper motors in various sizes. We also offer matching drives and programmable controllers for all models and integrated drives for most. An integrated motor is one where the drive is built into the unit which reduces wiring, takes up less space and eases installation.

Open loop stepper motors

Stepper motor Holding torque, kgf*cm (N*m) Max. current per phase, Amp Dimensions, mm Resistance per phase, Ohm Inductance per phase, mH Rotor inertia, g*cm2
SM2832 0.4 (0.04) 0.95 28x28x32 2.8 1 9
SM4247 4.4 (0.43) 1.68 42x42x48 1.65 2.8 68
SM5776 18.9 (1.85) 2.8 56x56x76 1.13 3.6 480
SM8680 46 (4.51) 4.2 86x86x80 0.75 3.4 1400
SM86118 87 (8.53) 6.0 86x86x118 0.6 6.5 2700
SM110201 280 (27.45) 8.0 110x110x201 0.67 12 16200

More details

SM2832 – NEMA11

Specifications

  • Maximum holding torque: 0.43kgf*cm (0.042 N*m)
  • Maximum current per phase: 0.95A
  • Phase resistance: 2.8 Ohm
  • Phase inductance: 0.8 mH
  • Rotor inertia: 0.9 g*cm2
  • Weight: 0.11 kg

View the manufacturer’s page for the SM2832 stepper motor. (New tab)

Dimensions

NEMA 11 stepper motor dimensions

Wiring

Wiring for unipolar stepper motors

SM4247 – NEMA17

Specifications

  • Maximum holding torque: 4.4 kgf*cm (0.43 N*m)
  • Maximum current per phase: 1.68 A
  • Phase resistance: 1.65 Ohm
  • Phase inductance: 2.8 mH
  • Rotor inertia: 68 g*cm2
  • Weigh: 0.35 kg

View the manufacturer’s page for the SM4247 stepper motor. (New tab)

Dimensions

Dimensions of the SM4247 NEMA 17 stepper motor

Wiring

Wiring for unipolar stepper motors

SM5776 – NEMA23

Specifications

  • Maximum holding torque: 18.9 kgf*cm (1.85 N*m)
  • Maximum current per phase: 2.8A
  • Phase resistance: 1.13 Ohm
  • Phase inductance: 3.6 mH
  • Rotor inertia: 480 g*cm2
  • Weight: 1 kg

View the manufacturer’s page for the SM5776 stepper motor. (New tab)

Dimensions

Dimensions of the SM5776 NEMA 23 stepper motor

Wiring

Wiring for unipolar stepper motors

SM8680 – NEMA34

Specifications

  • Maximum holding torque: 45 kgf*cm (4.4 N*m) – bipolar wiring.
  • Maximum current per phase: 4.2A
  • Phase resistance: 0.8 Ohm
  • Phase inductance: 3.5 mH
  • Rotor inertia: 1400 g*cm2
  • Weigh: 2.3 kg

View the manufacturer’s page for the SM8680 stepper motor. (New tab)

Dimensions

Dimensions of SM8680 NEMA 34 stepper motor

Wiring

Serial wiring connection

Serial wiring connection SM8680 stepper motor

Parallel wiring connection

Parallel wiring connection SM8680 stepper motor

SM86118 – NEMA34 (long)

Specifications

  • Maximum holding torque: 85 kgf*cm (8.3 N*m) – bipolar wire connecting.
  • Maximum current per phase: 6.0A
  • Phase resistance: 0.5 Ohm
  • Phase inductance: 6.0 mH
  • Rotor inertia: 2700 g*cm2
  • Weigh: 3.8 kg

View the manufacturer’s page for the SM86118 stepper motor. (New tab)

Dimensions

Dimensions of SM86118 NEMA 34 stepper motor

Wiring

Wiring of SM86118 stepper motor

SM110201 – NEMA42

Specifications

  • Maximum holding torque: 300 kgf*cm (29 N*m)
  • Maximum current per phase: 8.0A
  • Phase resistance: 0.67 Ohm
  • Phase inductance: 11 mH
  • Rotor inertia: 16200 g*cm2
  • Weigh: 11.7 kg

View the manufacturer’s page for the SM110201 stepper motor. (New tab)

Dimensions

Dimensions of SM110201 NEMA 42 stepper motor

Wiring

Wiring of SM86118 stepper motor