Document
Stepping Motors
28 mm sq.
1.8°/step RoHS
Bipolar winding, Lead wire type
Unipolar winding, Lead wire type p. 39
Bipolar winding, Lead wire type
Model no.
Single shaft SH2281-5671 SH2281-5771 SH2285-5671 SH2285-5771
Dual shaft SH2281-5631 SH2281-5731 SH2285-5631 SH2285-5731
Holding torque at 2-phase energization N·m min. 0.07 0.07 0.145 0.145
Rated current A/phase 0.5 1 0.5 1
Wiring resistance Ω/phase
10.5 2.6
15 3.75
Winding inductance mH/phase
7.2 1.85 13.5 3.4
Rotor inertia
×10-4kg·m2 0.01 0.01 0.022 0.022
Customizing Hollow Shaft modification Decelerator Encoder
Varies depending on the model number and quantity. Contact us for details.
Mass
kg 0.11 0.11 0.2 0.2
Motor length (L) mm 32 32 51.5 51.5
■ Characteristics diagram
SH2281-5671 SH2281-5631
Constant current circuit Source voltage: 24 VDC Operating current: 0.5 A/phase, 2-phase energization (full-step) Pull-out torque: JL=0.01×10-4kg·m2 (pulley balancer method) fs: Maximum self-start frequency when not l.