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High Starting Torque (25% UP from the Previous Model)
PM-type Stepping Motor
M55SP-2HPK
Announced on February 1, 2006
M55SP-2HPK
§ Overview
MITSUMI has developed this high-starting torque stepping motor to address the high-torque and high-speed needs in the printer market.

§ Features
1.
High starting torque (25% up from the previous model, depending on the frequency speed *1).
2.
Shortens the start-up time (25% less from the previous model, depending on the operating conditions).
3.
Widened maximum self-startup frequency (40% up from the previous model, depending on the operating conditions).
4.
High output: approximately 16W (at 24V and 1.2A/P), and high efficiency: approximately 50% (at 24V and 1.2A/P).
(*1) the previous model = M55SP-2 model

§ Main specifications
Rated voltage
DC 24V
Rated current/phase
1.2A/phase
Number of phases
4 phases
Wound resistance
4.6Ω
Step angle
7.5º step
Excitation method
2-2 phase excitation
Pull-out torque
145mN·m at 800pps
Pull-in torque
150mN·m at 200pps
Maximum answer frequency
1,400pps
Maximum starting frequency
500pps