Speed-torque envelope across supply voltages
The SH31401M02A1000: This SH3 servo motor delivers a nominal torque of 11 Nm at 115 V single phase, dropping to 10.4 Nm at 480 V three phase — the torque constant is 2.78 Nm/A at 120 °C copper temperature, so the actual torque available depends on the drive's current limit and the winding temperature rise. Nominal speed varies with supply: 375 rpm at 115 V single phase, 750 rpm at 230 V single phase, 1500 rpm at 400 V three phase, and 1800 rpm at 480 V three phase. Maximum mechanical speed is 4000 rpm, so the motor can overspeed above the nominal point if the drive and load allow it. Peak stall torque is 27 Nm across the 115–480 V three-phase range, giving a 2.4× overload margin above the continuous stall torque of 11.1 Nm. This headroom handles acceleration and intermittent loads without saturating the magnetic circuit.
Encoder feedback and environmental sealing
The absolute multiturn SinCos Hiperface encoder provides position feedback without a home cycle on power-up — the multiturn count tracks absolute position over multiple shaft revolutions, which matters for applications that must resume from the last known position after a power loss. IP54 on the shaft bushing without a shaft seal ring, IP65 on the motor body and shaft bushing with the seal ring fitted (per IEC 60034-5). The IP65 rating means the motor withstands hose-down cleaning in food or washdown environments, but the shaft seal ring must be present to keep water out of the bearing cavity.
Mounting and mechanical interface
International standard flange, 140 mm flange size, with a 130 mm centring collar and 11 mm mounting holes. The shaft is 24 mm diameter, 50 mm long, smooth (no keyway), so the coupling or pulley must use a clamping or friction fit — no key to transmit torque. Electrical connection via a rotatable right-angled connector or a straight connector — the rotatable option helps route the cable in tight cabinets without bending the cable beyond its minimum radius. Natural convection cooling means no fan, so the motor relies on the mounting surface and ambient airflow for heat rejection.
The SH31401M sizing reference and SH3 device short name identify the frame and winding variant — confirm the mating drive's current rating and encoder interface (Hiperface) before specifying.