Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document. (2019 - 9261a) © 2020 IMI International s.r.o. en 1.6.600.014 10/20
Motor Specifications
All curve charts on the following pages use a Chopper Drive with a 40 V DC power supply (8:1 voltage ratio).
The maximum speed shown for each motor is the highest no-load start speed.
Specification Unit NEMA 11 NEMA 14 NEMA 17 NEMA 23
Step Angle
Degree 1.8° 1.8° 1.8° 1.8°
Winding Voltage
VDC 5 5 5 5
Current/Phase
A rms 0.75 0.91 1.3 2.5
Resistance/Phase
ohms (Ω) 6.7 5.5 3.8 2
Inductance/Phase
mH 5.8 7.63 8.21 7.6
Power Input
Watts 7.5 9.1 13.2 25
Rotor Inertia
gcm2 13.5 30 78 332
Insulation Class
Class Class B Class B Class B Class B
Weight
oz 5.8 8.5 12.5 32
Insulation Resistance
M (Ω) 20 20 20 20
