Active production, multi-voltage torque curve
The SH31404P12A1100: This is a three-phase servo motor, but its torque and speed ratings shift with the supply voltage. At 400 V three-phase it delivers 12.9 Nm nominal torque at 3000 rpm; at 480 V three-phase the same motor produces 11.1 Nm at 3600 rpm. On single-phase 115 V it drops to 30.2 Nm at 750 rpm, and on 230 V single-phase it runs 26.3 Nm at 1500 rpm. The continuous power rating is 4040 W at 400 V three-phase. The encoder is an absolute multiturn SinCos Hiperface type — this gives position feedback without a home cycle on power-up, which matters for applications where the axis must resume from a known position after a power loss or emergency stop.
Mechanical envelope and mounting constraints
The motor flange is 140 mm (5.5 in) with a centring collar diameter of 130 mm (5.1 in) and a centring collar depth of 3.5 mm (0.1 in). The mounting holes are 11 mm (0.4 in) diameter on the standard international flange pattern. Overall body length is 382.5 mm (15.06 in). The shaft is 24 mm (0.9 in) diameter with a parallel key, key width 8 mm (0.3 in), shaft length 50 mm (2.0 in). The shaft end is a parallel key design — confirm the coupling or pulley bore matches the keyway dimensions before assembly. Cooling is by natural convection only — no integrated fan or forced-air channel. The thermal budget depends on the mounting surface and ambient air movement; the copper winding hot-spot temperature is rated at 130 °C (266 °F). In a confined cabinet or high-ambient installation, derate the duty cycle or add external airflow.
Electrical parameters for drive tuning and sizing
Stator resistance is 0.28 Ohm and stator inductance is 2.035 mH — these set the electrical time constant and influence the current-loop tuning gains on the servo drive. The torque constant is 1.57 Nm/A at 120 °C (248 °F) copper temperature; the back EMF constant is 104 V/krpm at 20 °C (68 °F). Continuous stall torque is 33.4 Nm (295.6 lbf.in) across the 115...480 V three-phase range. Peak stall torque reaches 131.9 Nm (1167.4 lbf.in) under the same voltage range — this is the short-term overload capability for acceleration or overcoming static friction. The maximum RMS current (Irms) is 95.6 A, and the 3-second peak output current is also 95.6 A. Maximum radial force (Fr) at the shaft is load-speed dependent: 2660 N at 1000 rpm, 2110 N at 2000 rpm, and 1840 N at 3000 rpm. Maximum axial force (Fa) is 300 N. These limits govern the belt tension or direct-coupling overhung load the bearings can sustain without reduced service life.
Sourcing and compliance for BOM placement
The motor carries IP65 compliance per IEC 60034-5. The electrical connection is a straight connector — no right-angle or field-attachable option is listed for this variant. The unit ships individually (1 unit per package). No holding brake is fitted to this variant (: Without). If the application requires a brake for vertical-axis holding or emergency stop, this motor alone will not provide it — a separate brake or a braked variant must be specified.