Product Description:

The SD-B3.031.030-04 is a brushless servo motor in the SD Magnet Motors series from Bosch Rexroth Indramat. It delivers closed-loop rotational power to positioning tables, pick-and-place heads, and indexing conveyors within automated lines. A permanent-magnet rotor and electronic commutation let the unit supply continuous torque without brush wear. Its flange and shaft geometry match standardized couplings, allowing quick installation in modular machine frames. This makes it useful in automated equipment that depends on accurate rotary motion over repeated production cycles.

Installation centers on a square flange that measures 116 mm, allowing the motor to bolt directly to gearboxes or machine plates without adapters. Under rated excitation it reaches 3000 rpm, a speed that aligns with common gearbox ratios and permits direct coupling to ball-screw drives. At standstill the stator windings can develop 3.1 Nm of torque, so holding force is available even when linear motion is paused. Mechanical power is transmitted through a cylindrical shaft sized at 19 × 40 mm, which matches standard clamping hubs. For controlled deceleration and secure parking, the motor is equipped with a disk brake that is spring applied and electrically released.

Dynamic load transitions are handled by a peak holding torque of 4.0 Nm, giving the axis additional margin when clamping fixtures engage or vertical loads must be restrained during power loss. Torque production comes from a rotor that uses Ferrite magnets, an economical choice that maintains magnetic stability over a broad temperature band. Because the unit is specified as a brushless servo motor, commutation is performed electronically, reducing maintenance compared with brushed designs. This operating principle also avoids brush dust and supports consistent response in applications that cycle frequently throughout the day. It is suitable for compact machine sections where predictable stopping behavior and steady torque output are important.