Product Description:

The SD-B5.250.020-05.000 is a permanent-magnet motor manufactured by Bosch Rexroth Indramat within the SD Magnet Motors series. It is designed to work in coordinated motion systems that drive indexing tables, feed rollers, and small transfer axes in automated equipment. By eliminating mechanical commutators, the motor supports long duty cycles and steady operation in assembly, packaging, and material-handling applications. This layout helps maintain consistent rotary output where repeated starts, stops, and position changes are required.

The motor can hold a load at standstill with 25 Nm of static torque, which can reduce the need for separate holding devices on many horizontal axes. Under continuous operation, it reaches a nominal speed of 2000 rpm, giving a practical balance between dynamic response and service life for medium-inertia loads. Its square mounting flange measures 116 mm, providing a compact interface for machine installation and accurate alignment to the mounting surface. Power is transferred through a shaft sized at ø 19 × 40 mm, so the coupling must match both the shaft diameter and the available engagement length. Rotor excitation is provided by Ferrite magnets, which supply the magnetic flux needed for controlled servo operation.

The motor is intended for use with Rexroth drive amplifiers, which regulate current and speed for coordinated motion. As a brushless servo motor, it uses electronic commutation rather than mechanical brushes, which reduces wear and helps keep enclosed machine spaces cleaner during long operating periods. This operating principle also supports repeatable motion on transfer and positioning axes where stable control is needed across frequent cycle changes. The motor remains suitable for automated systems that require dependable rotation without brush contact inside the housing.