Three-phase servo with holding brake — 660 W continuous, 3000 rpm at 400 V
The SH31001M02F2000 is a three-phase servo motor from the SH3 series, delivering 660 W continuous power and a nominal speed of 3000 rpm when supplied at 400 V three-phase. The same motor runs at 2500 rpm on 400 V three-phase and 625 rpm on 115 V single-phase, so the supply voltage directly sets the speed ceiling — pair it with a drive that matches the line voltage to get the full speed range. A holding brake is integrated, rated at 79.7 lbf.in (9 N.m) holding torque. This holds the load in position when power is removed — essential for vertical axes or any application where the motor must not back-drive during a power loss or standstill. The encoder is an absolute multiturn SinCos Hiperface type. Position is retained through power cycles, so the machine does not need a homing routine after a restart — the controller reads the absolute position immediately. This saves cycle time on every power-up and eliminates the need for a home sensor.
Torque and speed across the supply range
Nominal torque varies with supply: 2.8 N.m at 115 V single-phase, 2.71 N.m at 230 V single-phase, and 2.52 N.m at both 400 V and 480 V three-phase. The torque is relatively flat across the voltage range, so the motor delivers consistent force regardless of the line voltage available on site. Peak stall torque reaches 85.0 lbf.in (9.6 N.m) on three-phase supplies from 115 to 480 V — this is the short-term overload capability for acceleration, deceleration, or breaking through a stuck load. The continuous stall torque is 26.02 lbf.in (2.94 N.m), which is the torque the motor can sustain at zero speed without overheating. The torque constant is 1.63 N.m/A at 120 °C copper temperature. This lets the drive calculate the current needed for a given torque command — a key parameter for tuning the current loop. The back EMF constant is 115 V/krpm at 20 °C, which defines the voltage the motor generates at speed and sets the minimum DC bus voltage the drive must supply.
Mounting, cooling, and environmental protection
The motor mounts on an international standard flange with a 100 mm flange size and a 95 mm centring collar. Four mounting holes at 9.0 mm diameter on a standard bolt circle — fits common gearboxes and machine frames without a custom adapter plate. Cooling is by natural convection — no fan. The thermal capacity depends on the mounting surface area and ambient airflow. In a confined cabinet or with a high duty cycle, the continuous torque may need to be derated below the 2.94 N.m continuous stall figure. The motor body is rated IP65 per IEC 60034-5, meaning it is dust-tight and protected against low-pressure water jets — suitable for washdown environments. The shaft bushing is IP54 without the shaft seal ring, so the shaft exit point is the wet-end limitation. In a direct spray zone, fit the optional shaft seal ring to bring the bushing to IP65.
Shaft, connector, and mechanical limits
The shaft is smooth (no keyway) with a 19 mm diameter and 40 mm length. A clamping or friction coupling is required — no keyed hub will fit. The shaft end is smooth, so the coupling must grip the full diameter. The electrical connection is a rotatable right-angled connector. The cable exit angle can be adjusted in the field by rotating the connector body — useful when the motor is mounted in a tight space where a straight connector would hit a panel wall or adjacent component. Maximum radial force is 900 N at 1000 rpm, derating to 530 N at 5000 rpm. This is the bearing load limit for belt or pulley drives — a belt tension that exceeds this at the operating speed will shorten bearing life. Maximum axial force is 160 N, which limits thrust loads from direct-drive or helical-cut gearboxes.
Electrical model and drive pairing
Stator inductance is 34.7 mH and stator resistance is 13.9 Ohm. These values define the motor's electrical time constant and are needed to set the current regulator gains in the servo drive. The 4-pole design gives a base speed of 3000 rpm at 50 Hz supply. The motor is rated for a copper hot temperature of 130 °C. The torque constant is specified at 120 °C, which is close to the thermal limit — the motor can run at rated torque continuously without exceeding this temperature under natural convection cooling, provided the ambient is within the standard range.
No official successor or cross-reference is recorded. The SH31001M sizing reference indicates this is a standard catalogue variant within the SH3 family, so replacements within the same series are parametric rather than pin-compatible substitutes. For a direct drop-in, order the same MPN.