Item # KR42HM4-551, KR Series, 3 phase Permanent Magnet (3.75 Degree/Step)

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

Specifications | Torque Curve | Dimensions | Additional Information | Customize

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 2.8 V
Current per 2 Phase	N/A 2.0 A
Winding Resistance/2 Phase	N/A 1.4 Ω
Inductance/2 Phase	N/A 1.7 mH
Holding Torque	N/A 8.3 oz·in58.9 mN·m
Detent Torque	N/A 0.8 oz·in5.9 mN·m
Standard Size	N/A 42 x 34 mm1.65 x 1.34 in.
Rotor Inertia	N/A 31 g·cm²0.17 oz·in²
Weight	N/A 210 g0.46 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