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  • Drive Circuit is simplified because the motor is driven with star winding connection
  • High torque is obtained at low speed with a mirco-step driver
  • Ultra-low vibration and low noise achieved with our micro-step driver
  • With these drivers, motor step angle is set by selecting from 1/1, 1/2, 1/4, or 1/8
Unit of Measure

Type

N/A KR Series, 3 phase Permanent Magnet (3.75 Degree/Step)

Product Type

N/A Stepper Motor

Series

N/A 3 Phase KT

Motor Frame Size

N/A NEMA 17

No. of Phases

N/A 3

Step Angle

N/A 3.75 deg./step

Voltage

N/A 3.5 V

Current per 2 Phase

N/A 2.5 A

Winding Resistance/2 Phase

N/A 1.4 Ω

Inductance/2 Phase

N/A 1.7 mH

Holding Torque

N/A 16.7 oz·in118 mN·m

Detent Torque

N/A 1.4 oz·in9.8 mN·m

Standard Size

N/A 42 x 48 mm1.65 x 1.89 in.

Rotor Inertia

N/A 57 g·cm²0.31 oz·in²

Weight

N/A 350 g0.77 lb

Insulation Class

N/A Jis Class E (120ºC/248ºF) (UL Value : Class B 130ºC/266ºF)

Insulation Resistance (Motor Section)

N/A 500 VDC, 100 MO min.

Dielectric Strength

N/A 500 VAC, 50 HZ, 1 min.

Operating Temperature Range

N/A 0 to 50 ºC

Allowable Temperature Rise

N/A 70 ºK


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Explanation of Dynamic Torque Curves

KR42EM4.jpg

KR42HM4-551-.jpg

KR42KM4-551-VIBRATION.jpg

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