Stepping Motors 56 mm sq. (2.20 inch sq.) 1.8/step RoHS Customizing Unipolar winding, Lead wire type Hollow Shaft modification Bipolar winding, Lead wire typep. 70 Decelerator Encoder Varies depending on the model number and quantity. Contact us for details. Unipolar winding, Lead wire type Model number Single shaft 103H7121-0140 103H7121-0440 103H7121-0740 103H7123-0140 103H7123-0440 103H7123-0740 103H7124-0140 103H7124-0440 103H7124-0740 103H7126-0140 103H7126-0440 103H7126-0740 Dual shaft 103H7121-0110 103H7121-0410 103H7121-0710 103H7123-0110 103H7123-0410 103H7123-0710 103H7124-0110 103H7124-0410 103H7124-0710 103H7126-0110 103H7126-0410 103H7126-0710 Holding torque at 2-phase energization [N*m (oz*in) min.] 0.39 (55.2) 0.39 (55.2) 0.39 (55.2) 0.83 (117.5) 0.83 (117.5) 0.78 (110.5) 0.98 (138.8) 0.98 (138.8) 0.98 (138.8) 1.27 (179.8) 1.27 (179.8) 1.27 (179.8) Rated current A/phase 1 2 3 1 2 3 1 2 3 1 2 3 Wiring resistance /phase 4.8 1.25 0.6 6.7 1.6 0.77 7 1.7 0.74 8.6 2 0.9 Winding inductance mH/phase 8 1.9 0.8 15 3.8 1.58 14.5 3.1 1.4 19 4.5 2.2 Mass (Weight) [x10-4kg*m2 (oz*in2)] [kg (Ibs)] 0.1 (0.55) 0.47 (1.04) 0.1 (0.55) 0.47 (1.04) 0.1 (0.55) 0.47 (1.04) 0.21 (1.15) 0.65 (1.43) 0.21 (1.15) 0.65 (1.43) 0.21 (1.15) 0.65 (1.43) 0.245 (1.34) 0.8 (1.76) 0.245 (1.34) 0.8 (1.76) 0.245 (1.34) 0.8 (1.76) 0.36 (1.97) 0.98 (2.16) 0.36 (1.97) 0.98 (2.16) 0.36 (1.97) 0.98 (2.16) Rotor inertia Motor length (L) mm (in) 41.8 (1.65) 41.8 (1.65) 41.8 (1.65) 53.8 (2.12) 53.8 (2.12) 53.8 (2.12) 63.8 (2.51) 63.8 (2.51) 63.8 (2.51) 75.8 (2.98) 75.8 (2.98) 75.8 (2.98) Characteristics diagram 40 30 20 Torque (N*m) 50 0.3 Pull-out torque at JL 0.2 0.1 10 0 0 0.1 1 fs 10 Pulse rate (kpulse/s) 100 100 Constant current circuit Source voltage: 24 VDC Operating current: 2 A/phase, 2-phase energization (full-step) JL=[0.94 x 10 -4kg*m2 (5.14 oz*in2) use the rubber coupling] fs: Maximum self-start frequency when not loaded 70 0.4 60 50 Torque (oz*in) 0.4 60 Torque (oz*in) Constant current circuit Source voltage: 24 VDC Operating current: 1 A/phase, 2-phase energization (full-step) JL=[0.94 x 10 -4kg*m2 (5.14 oz*in2) use the rubber coupling] fs: Maximum self-start frequency when not loaded 0.5 103H7121-0440 103H7121-0410 70 40 30 20 Torque (N*m) 0.5 103H7121-0140 103H7121-0110 0.3 Pull-out torque at JL 0.2 0.1 10 0 0 0.1 1000 2000 3000 5000 100 Number of rotations (min-1) 30 20 Pull-out torque at JL 0.3 0.2 0.1 10 0 0 0.1 1 fs 10 Pulse rate (kpulse/s) 100 100 Constant current circuit Source voltage: 24 VDC Operating current: 1 A/phase, 2-phase energization (full-step) JL=[0.94 x 10 -4kg*m2 (5.14 oz*in2) use the rubber coupling] fs: Maximum self-start frequency when not loaded 0.8 120 100 80 60 40 Torque (N*m) 40 Torque (N*m) 50 0.6 Pull-out torque at JL 0.4 0.2 20 0 0 0.1 1000 2000 3000 5000 0.8 80 60 40 20 0 Torque (N*m) 100 0.6 Pull-out torque at JL 0.4 0.2 0 0.1 1 fs 10 Pulse rate (kpulse/s) 100 100 Constant current circuit Source voltage: 24 VDC Operating current: 3 A/phase, 2-phase energization (full-step) JL=[0.94 x 10 -4kg*m2 (5.14 oz*in2) use the rubber coupling] fs: Maximum self-start frequency when not loaded 10002000 3000 5000 Number of rotations (min-1) 68 100 1000 2000 3000 5000 Allowable Load, Rotation Directionp. 87 General Specificationsp. 88 Data is measured under the trial conditions of SANYO DENKI. Driving torque may vary according to actual machine precision. 1.0 140 0.8 120 100 80 60 40 20 0 Torque (N*m) 103H7123-0740 103H7123-0710 Torque (oz*in) 1.0 120 10 Number of rotations (min-1) 140 Torque (oz*in) Constant current circuit Source voltage: 24 VDC Operating current: 2 A/phase, 2-phase energization (full-step) JL=[0.94 x 10 -4kg*m2 (5.14 oz*in2) use the rubber coupling] fs: Maximum self-start frequency when not loaded 1 fs Pulse rate (kpulse/s) 100 Number of rotations (min-1) 103H7123-0440 103H7123-0410 1000 2000 3000 5000 140 Torque (oz*in) 0.4 60 100 1.0 103H7123-0140 103H7123-0110 70 Torque (oz*in) Constant current circuit Source voltage: 24 VDC Operating current: 3 A/phase, 2-phase energization (full-step) JL=[0.94 x 10 -4kg*m2 (5.14 oz*in2) use the rubber coupling] fs: Maximum self-start frequency when not loaded 10 Number of rotations (min-1) 0.5 103H7121-0740 103H7121-0710 1 fs Pulse rate (kpulse/s) 0.6 Pull-out torque at JL 0.4 0.2 0 0.1 1 fs 10 Pulse rate (kpulse/s) 100 1000 2000 3000 5000 Number of rotations (min-1) 100