Oriental Motor

ORIENTAL MOTOR U.S.A. Corp.
570 Alaska Avenue
Torrance, CA 90503
1-800-GO-VEXTA (468-3982)

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The high-torque PKP series stepper motor offers balanced performance enhanced by high torque, low vibration and low noise.

  • 1.97 in. (50 mm) Frame Size
  • 2-phase, Bipolar
  • Current per Phase = 2.8 A
  • Single or Double Shaft
  • Encoder models available
  • Max. Holding Torque = 89 ~ 280 oz-in (0.63 ~ 1.99 N·m)
Stepper Motor
Unit of Measure
Items Stepper Motor
PKP254D28AA2
1.97 in. (50mm) 2-Phase Bipolar Stepper Motor
Web Price $69.00
Stepper Motor
PKP254D28BA2
1.97 in. (50mm) 2-Phase Bipolar Stepper Motor
Web Price $72.00
Stepper Motor
PKP256D28AA2
1.97 in. (50mm) 2-Phase Bipolar Stepper Motor
Web Price $77.00
Stepper Motor
PKP256D28BA2
1.97 in. (50mm) 2-Phase Bipolar Stepper Motor
Web Price $83.00
Stepper Motor
PKP258D28AA2
1.97 in. (50mm) 2-Phase Bipolar Stepper Motor
Web Price $95.00
Return Policy - This product cannot be cancelled or returned once the order has been processed.
Basic Step Angle - 1.8º
Frame Size - 1.97 in
Motor Length - 1.54 in. - 1.54 in. - 2.03 in. - 2.03 in. - 3.19 in.
Holding Torque - 89 oz-in - 89 oz-in - 153 oz-in - 153 oz-in - 280 oz-in
Current per Phase (A/phase) - 2.8
Voltage (VDC) - 1.5 - 1.5 - 2 - 2 - 3.1
Resistance (Ω/phase) - 0.55 - 0.55 - 0.7 - 0.7 - 1.1
Inductance (mH/phase) - 1.1 - 1.1 - 1.6 - 1.6 - 2.8
Shaft/Gear Type - Round Shaft with Flat (No Gearhead)
Gear Ratio (X:1) -
Output Shaft Diameter - 1/4 in.
Backlash -
Shaft - Single - Double - Single - Double - Single
Encoder - Not Equipped
Encoder Output -
Output Type -
Electromagnetic Brake - Not Equipped
Motor Connection Type - Flat Connector
Connection Type - Bipolar
Lead Wires - 4
Rotor Inertia - 0.66 oz-in² - 0.66 oz-in² - 1.2 oz-in² - 1.2 oz-in² - 2.5 oz-in²
Radial Load - 0 in. from Shaft End = 12.1 lb0.2 in. from Shaft End = 15 lb0.39 in. from Shaft End = 20 lb0.59 in. from Shaft End = 29.2 lb
Axial Load - 4.5 lb
Brake Type -
Brake Power Supply -
Excitation Current -
Static Friction Torque -