MITSUMI

Stepping Motors
M55SP-2K
Stepping Motors

OUTLINE
We are developing a model with Ø55 external
diameter and 4 layer structure featuring in high
output (high torque) and efficiency.This motor is
suitable for the field requires power output, such
as printer (LBP), copier and so on.

FEATURES
1. Mitsumi's unique torque characteristics are realized.
2. Superior running quietness and stability.
3. Step angle : 7.5˚.
4. Excellent responsiveness acquired.

USES
Printers, multifunction machines, copy machines, FAX, and such.
 MITSUMI
Stepping Motors

SPECIFICATIONS
Items M55SP-2K
Rated Voltage DC 24V
Working Voltage DC 21.6~26.4V
Rated Current/Phase 0.8A(PEAK) 1.2A(PEAK)
No. of Phase 2 Phase 2 Phase
Coil DC Resistance 5Ω/phase±10% 5Ω/phase±10%
Step Angle 7.5˚/step 7.5˚/step
Excitation Method 2-2 Phase excitation (Bipolar chopping driving)
Insulation Class Class E insulation Class E insulation
Holding Torque 156mN·m 200mN·m
Pull-out Torque 101mN·m/800pps 154mN·m/800pps
Pull-in Torque 167mN·m/200pps 168mN·m/200pps
Max. Pull-out Pulse Rate 3000pps 1750pps
Max. Pull-in Pulse Rate 350pps 390pps

CHARACTERISTICS

M55SP-2K(5Ω, 24V 0.8A/Phase DC) M55SP-2K(5Ω, 24V 1.2A/Phase DC)

Pu
ll-o
Torque(mN·m)

Torque(mN·m)

140

ut
Pull-in
Pu

120 120

To
ll-
ou

rqu
100
Torqu
tT

e
or
Pull-in

80 80
qu
e

60
Torqu

40 40
20
e

0 0
0 500 1000 1500 2000 0 200 400 600 800 1000 1200 1400 1600
Pulse Rate(pps) Pulse Rate(pps)

DIMENSIONS
29.7 0.8
±0.2
65 1.5 1.2
ø52
ø55
ø13 -0.1
0

ø4 -0.01
0

2-R5

2-ø4.4

Unit : mm, General tolerance : ±0.5