660 W continuous, 2.8 N·m — torque and speed depend on supply
The SH31001M12A1100 is a Schneider Electric SH3 series servo motor rated for 660 W continuous power. Its nominal torque ranges from 2.52 N·m at 480 V three-phase to 2.8 N·m at 115 V single-phase, while nominal speed climbs from 625 rpm at 115 V single-phase to 3000 rpm at 480 V three-phase. Peak stall torque reaches 9.6 N·m across the 115–480 V three-phase range, giving short-term overload headroom for acceleration and deceleration cycles. Continuous stall torque is 2.94 N·m — the thermal limit at zero speed that governs holding torque in stopped-axis applications. This is a three-phase motor (4 poles) requiring a servo drive with three-phase output. The winding is rated for a copper hot temperature of 130°C, with natural convection cooling — no fan, so the mounting surface and ambient airflow set the thermal budget.
Absolute multiturn Hiperface encoder — no homing cycle needed
The motor carries an absolute multiturn SinCos Hiperface encoder. This feedback type retains position across power cycles, eliminating the need for a homing sequence on restart — critical for applications where the axis must resume from the last commanded position after a power loss or emergency stop. The encoder's multiturn resolution tracks shaft revolutions beyond one turn, so the drive knows the absolute position of a multi-revolution axis (e.g., a ball screw or rotary table) immediately on power-up. The SinCos analog track provides fine interpolation for velocity ripple below 1% at low speed. Electrical connection is via a straight connector — the cable exits axially from the motor body, which matters for cable routing in tight enclosures or moving cable tracks.
No holding brake — plan external braking for vertical axes
The shaft is 19 mm diameter with a parallel key — standard keyed output for positive drive to a coupling, timing pulley, or gearbox. Maximum radial force Fr is 900 N at 1000 rpm, derating to 530 N at 5000 rpm; maximum axial force Fa is 160 N. These bearing load limits must be checked against the reflected load from the mechanics, especially for belt drives or overhung loads.
Active production — sourced to order
The motor flange is the international standard 100 mm size with a centring collar diameter of 95 mm and depth of 3.5 mm. Mounting holes are 9.0 mm diameter — M8 bolt clearance. Overall body length is 168.5 mm; shaft length is 40 mm. These dimensions confirm fit to standard IEC 100 mm flange mounts without adapter plates.