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  • High torque
  • Low vibration
  • Silent operation
  • High position accuracy
The best magnetic balance is employed in our round type stepping motor. Motor performance is greatly improved using the latest technology of three dimensional magnetic field analysis and robust design.
Unit of Measure


N/A KA50 Series 2 Phase Hybrid Motors (1.8 Degree/Step) - NEMA 17

Motor Frame Size

N/A Dia: 50 mmDia: 1.97 in

Product Type

N/A Hybrid Motor


N/A 2 Phase Round KA

Motor Frame Size


Step Angle

N/A 1.8 deg./step

Voltage per Phase

N/A 2.08 V

Current per Phase

N/A 2.0 A

Resistance per Phase

N/A 1.04 Ω

Inductance per Phase

N/A 0.9 mH

Holding Torque

N/A 31 oz·in216 mN·m

Detent Torque

N/A 1.7 oz·in12 mN·m

Rotor Inertia

N/A 50 B·cm²0.3 oz·in²

Winding Method

N/A Unipolar


N/A 230 g0.5 lb

KA50HM2-501 ST CURVE.jpg


Connection Diagrams

Explanation of Dynamic Torque Curves

KA Series Motors with D-Cut Single Shaft Motors (Max. 1.8 Degree/Step) (KA50HM2-552)

KA50 Series 2 Phase Hybrid Motors (1.8 Degree/Step) - Nema 17 (KA50KM2)

Lead Wire Assembly