B - 48 - 42 - U SPECIFICATIONS B-48-42-U19 B-48-42-U110 B-48-42-U14 . Units Unipolar, Low Torque Unipolar, Medium Torque Unipolar, High Torque, High Speed Operating Voltage V 6 12 24 Rated Current mA 830 500 600 Resistance per phase W 6 24 40 Inductance per phase mH 1.8 7.5 14 Holding Torque g-cm 420 630 890 Detent Torque g-cm 85 85 85 Rotor Inertia g-m2 10.6 x 10-4 10.6 x 10-4 10.6 x 10-4 Weight gms 90 90 90 Step Angle degrees 7.5 7.5 7.5 Step angle accuracy o +/- 0.5o +/- 0.5o +/- 0.5o Max. operating temperature oC 100 100 100 Dielectric strength - 1000 VAC for 1 min. 1000 VAC for 1 min. 1000 VAC for 1 min. End play mm 0.2 0.2 0.2
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