Data Sheet

The rear shaft of this motor can be equipped with the HKT22 Optical Encoder for applications where
you need to keep track of the exact position, velocity, or acceleration of the motor.
Motor Properties
• Motor Type: Bipolar Stepper
• Step Angle: 0.023°
• Step Accuracy: ± 5 %
• Holding Torque: 240 kg·cm
• Rated Torque: 240 kg·cm
• Maximum Speed (w/Motor Controller): 25 RPM
• Acceleration at Max Speed (w/ Motor Controller): 1E+06 1/16 steps/sec²
Electrical Properties
• Recommended Voltage: 12 V DC
• Rated Current: 2.8 A
• Coil Resistance: 900 mΩ
• Phase Inductance: 2.5 mH
Physical Properties
• Shaft Diameter: 12 mm
• Rear Shaft Diameter: 3.9 mm
• Mounting Plate Size: NEMA - 23
• Weight: 1.5 kg
• Number of Leads: 4
• Wire Length: 300 mm
Gearbox Properties
• Gearbox Type: Planetary
• Gear Ratio: 76 49⁄64 : 1
• Backlash Error: 1 1⁄2°
• Maximum Strength of Gears: 240 kg·cm
• Shaft Maximum Axial Load: 100 N
• Shaft Maximum Radial Load: 250 N