Servo Motor Sizing: brushless ac pm
NEMA23 HV01 to NEMA42 HI01
Servo motor sizing data for brushless AC permanent-magnet, hybrid stepper-servo, and direct-drive torque motors across NEMA 17/23/34/42 and IEC 42–310 mm frame sizes. Fields include continuous and peak torque, rated/max speed, rotor inertia, torque constant (Kt), back-EMF constant (Ke), winding resistance, thermal time constant, encoder resolution, weight, shaft diameter, voltage class, and IP rating. Based on Yaskawa Sigma-7/SGMCS, Siemens 1FK7/1FL6, Beckhoff AM8000/AM887x, Kollmorgen AKM/KBM/TB, Allen-Bradley Kinetix MPL, Applied Motion STM, Leadshine ELS, NEMA MG-1 Part 30, IEC 60034-1.
| motor type | record id | IP rating | back emf constant V per krpm (V/krpm) | continuous torque Nm (Nm) | encoder resolution counts per rev (counts/rev) | frame iec mm (mm) | frame nema | max speed rpm (rpm) | max winding temp C (degC) | peak to cont ratio | peak torque Nm (Nm) | rated speed rpm (rpm) | rotor inertia kg cm2 (kg·cm2) | shaft diameter mm (mm) | standard | thermal time constant min (min) | torque class | torque constant Nm per A (Nm/A) | typical applications | voltage class | weight kg (kg) | winding resistance ohm (ohm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| brushless ac pm | NEMA23 HV01 | IP65 | 35.4 | 1.27 | 131,072 | 57 | 23 | 6,000 | 155 | 3 | 3.81 | 3,000 | 0.24 | 9.525 | Allen-Bradley MPL-A230; Siemens 1FL6022; IEC 60034-1 | 22 | 0.5-2 | 0.38 | high-voltage 200VAC bus servo for machine tools | 200VAC | 1.2 | 3 |
| brushless ac pm | NEMA34 01 | IP65 | 52 | 2.39 | 131,072 | 86 | 34 | 6,000 | 155 | 3 | 7.17 | 3,000 | 1.1 | 14 | Yaskawa SGM7G-09A; Kollmorgen AKM42; IEC 60034-1 | 30 | 2-10 | 0.56 | CNC spindle feed, rotary table, laser cutter | 200VAC | 3.4 | 0.28 |
| brushless ac pm | NEMA34 02 | IP65 | 103 | 4.77 | 131,072 | 86 | 34 | 6,000 | 155 | 3 | 14.31 | 3,000 | 2 | 14 | Yaskawa SGM7G-20A; Kollmorgen AKM43; Beckhoff AM8032; IEC 60034-1 | 35 | 2-10 | 1.11 | machine tool main axis, indexing chucks, extruders | 200VAC | 5.2 | 0.15 |
| brushless ac pm | NEMA34 03 | IP65 | 155 | 7.16 | 131,072 | 86 | 34 | 5,000 | 155 | 3 | 21.48 | 3,000 | 3.6 | 14 | Yaskawa SGM7G-30A; Kollmorgen AKM44; IEC 60034-1 | 40 | 2-10 | 1.67 | servo presses, high-speed packaging, AGV drives | 200VAC | 7.8 | 0.1 |
| brushless ac pm | NEMA34 04 | IP65 | 206 | 9.55 | 131,072 | 86 | 34 | 4,500 | 155 | 3 | 28.65 | 3,000 | 5.7 | 14 | Yaskawa SGM7G-44A; Kollmorgen AKM45; IEC 60034-1 | 45 | 2-10 | 2.22 | injection moulding clamp, heavy gantry, servo hydraulic | 200VAC | 10.5 | 0.07 |
| brushless ac pm | NEMA34 HI01 | IP65 | 103 | 4.77 | 131,072 | 86 | 34 | 4,000 | 155 | 3 | 14.31 | 2,000 | 9 | 14 | Siemens 1FK7053-HI; IEC 60034-1; NEMA MG-1 Part 30 | 50 | 2-10 | 1.11 | high inertia load, drum drives, intermittent high-cycle | 200VAC | 6.5 | 0.15 |
| brushless ac pm | NEMA34 HV01 | IP65 | 138 | 4.77 | 131,072 | 86 | 34 | 5,000 | 155 | 3 | 14.31 | 3,000 | 2 | 14 | Siemens 1FK7040; Allen-Bradley MPL-A320; IEC 60034-1 | 35 | 2-10 | 1.48 | 400VAC bus servo for standard machine tool | 400VAC | 5.5 | 0.2 |
| brushless ac pm | NEMA42 01 | IP65 | 393 | 14.32 | 131,072 | 110 | 42 | 4,000 | 155 | 3 | 42.96 | 2,000 | 18 | 19 | Siemens 1FK7063; Beckhoff AM8041; IEC 60034-1 | 55 | 10-50 | 4.22 | servo presses, rotary broaching, large gantry Z-axis | 400VAC | 18 | 0.05 |
| brushless ac pm | NEMA42 02 | IP65 | 657 | 23.87 | 131,072 | 110 | 42 | 3,000 | 155 | 3 | 71.61 | 2,000 | 32 | 19 | Siemens 1FK7083; Beckhoff AM8042; IEC 60034-1 | 60 | 10-50 | 7.06 | winding machines, large CNC, servo presses | 400VAC | 25 | 0.03 |
| brushless ac pm | NEMA42 HI01 | IP65 | 657 | 23.87 | 131,072 | 110 | 42 | 3,000 | 155 | 3 | 71.61 | 1,500 | 110 | 19 | Siemens 1FK7083-HI; Beckhoff AM8042; IEC 60034-1 | 75 | 10-50 | 7.06 | large format machine tool, servo press, heavy conveyor | 400VAC | 32 | 0.03 |
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