Product Description:

The SE-B5.320.020-14.015 is a synchronous servo motor built by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. As a rotary actuator, it converts drive current into controlled torque and speed, letting machine tools, packaging stations, and pick-and-place axes position loads with closed-loop accuracy. The design pairs a laminated stator with a permanent-magnet rotor so the motor can interface directly with digital drives used throughout industrial automation.

At standstill, the motor can deliver a static torque of 24 Nm, a measure of how much load it can hold without rotor motion. Each ampere supplied to the windings produces approximately 1.60 Nm/A because of the torque constant, linking drive current to output torque for current-loop tuning. The back EMF generated while running has a voltage constant of 176 V/1000 rpm; this value helps with DC-bus voltage selection so the controller maintains headroom at top speed. Current rises to its commanded value within an electrical time constant of 2.4 ms, while speed reacts over a mechanical time constant of 18.0 ms. These response times affect the motor’s servo bandwidth. The three-phase stator has a winding inductance of 8.7 mH and a resistance of 0.47 Ω; these parameters influence the drive’s pulse-width modulation frequency and winding temperature.

An integrated holding brake supplies 56 Nm of counter-torque, engages within 70 ms, and is energized by a 24 VDC coil, allowing the axis to remain fixed during power loss. The rotor inertia is 13.6 × 10⁻³ kg·m², while the shaft measures 32 mm in diameter and 58 mm in length. This combination helps damp load disturbances without significantly slowing the motor’s response. With an overall length of 387 mm and a flange diameter of 180 mm, the frame fits standard IEC mounting patterns and supports accurate gearbox alignment. The motor has a total mass of 37 kg, providing thermal capacity that limits temperature rise during cyclic operation.