Autonics Ai-M Series, User Manual, Page: 25 / 96

2 Specification
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2.3.7 Common Specifications
Standard step angle 1.8° / 0.9° (Full / Half step)
Motor phase 2 phase
Run method Bipolar
Insulation class B type (130°C)
Insulation resistance Over 100 M Ω (at 500 VDC ᜡ megger) between motor coil-case
Dielectric strength 500 VAC ᜡ 50/60 Hz for 1 min between motor coil-case
Vibration
1.5 mm amplitude at frequency of 10 to 55Hz (for 1 min) in
each X, Y, Z direction for 2 hours
Shock Approx. max. 50G
Environ
ment Ambient temperature 0 to 50°C, storage: -20 to 70°C
Ambient humidity
20 to 85%RH, storage: 15 to 90%RH
Approval ᜢ
Protection structure IP30 (IEC34-5 standard)
Stop angle error
※ 1
±0.09°
Shaft vibration
※ 2
0.03mm T.I.R.
Radial
movement
※ 3
Frame size
20 / 28 / 35 mm Max. 0.025mm (load 450g)
Frame size
42 / 56 / 60 mm Max. 0.025mm (load 25N)
Axial
movement
※ 4
Frame size
20 / 28 / 35 mm Max. 0.005mm (load 920g)
Frame size
42 / 56 / 60mm Max. 0.01mm (load 50N)
Concentricity for shaft of setup in-low 0.05 mm T.I.R.
Perpendicularity of set-up plate shaft 0.075 mm T.I.R.
※ 1: Specifications are for full-step angle, without load. (Values may vary by load size)
※ 2: T.I.R. (Total Indicator Reading): Indicate total dial gauge quantity in case of one complete
rotating monitored reference around a base point.
※ 3: Amount of radial shaft displacement when adding a radial load
(450g ‒ frame size 20 / 28 / 35mm, 25N ‒ frame size 42 / 56 / 60mm) to the tip of the motor shaft.
※ 4: Amount of axial shaft displacement when adding a axial load
(920g ‒ frame size 20 / 28 / 35mm, 50N ‒ frame size 42 / 56 / 60mm to the shaft.
※ Environment resistance is rated at no freezing or condensation.