Step Angle: 1.8 degree Model/ Motor Length/ Holding Torque Min. / Current/ Phase Resistance/ Phase Inductance/ Rotor Inertia/ Lead Wire/ Detent TorqueMax./ Motor Weight 34HS6540 65mm 240N.cm 4(A) 0.65(Ω) 3.3mH 0.8(g.cm²) 4 10(N.cm) 1.9 (kg) 34HS7060 70mm 340N.cm 6(A) 0.4 (Ω) 1.70mH 1.00(g.cm²) 4 12(N.cm) 2.1(kg) 34HS8060 80mm 450N.cm 6(A) 0.45(Ω) 3.0 mH 1.23(g.cm²) 4 15(N.cm) 2.3(kg) 34HS10060 100mm 728N.cm 6(A) 0.50(Ω) 4.8 mH 2.70(g.cm²) 4 20(N.cm) 3.3(kg) 34HS11860 118mm 870N.cm 6(A) 0.57(Ω) 5.5 mH 3.3(g.cm²) 4 30(N.cm) 3.7(kg) 34HS13060 130mm 1000N.cm 6(A) 0.6 (Ω) 5.8 mH 4.0(g.cm²) 4 35(N.cm) 4.0(kg) 34HS15060 150mm 1200N.cm 6(A) 0.7 (Ω) 6.8 mH 5.0(g.cm²) 4 45(N.cm) 5.5(kg)