SD-B5 250.020-10.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SD-B5 250.020-10.000 is a brushless servo motor in the SD Magnet Motors series. It features a flange size of 116 mm and a ferrite magnet type. The motor delivers a nominal speed of 2000 rpm, a standstill torque of 25 Nm, and a shaft diameter of 19x40 mm. The configuration includes basic equipment without a keyway or brake.
Internal Product Review
SD-B5 250.020-10.000 is a brushless servo motor from the SD Magnet Motors series with a basic equipment configuration without keyway or brake. Ferrite magnet construction and a 2000 rpm nominal speed support smooth, dependable motion performance in servo applications. A strong 25 Nm standstill torque makes this unit a highly capable choice for demanding positioning duty.
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Product Description:
The SD-B5 250.020-10.000 is a brushless servo motor manufactured by Bosch Rexroth Indramat within the SD Magnet Motors series. As a torque-controlled drive component, it converts electrical energy into regulated rotary motion for positioning tables, gantries, and material-handling axes inside automated cells. The unit uses a brushless, permanent-magnet topology that reduces routine maintenance and supports rapid directional reversals. This operating style makes it suitable for closed-loop applications that require repeatable speed and angle control over extended duty cycles.
At a nominal rotor velocity of 2000 rpm, the motor sustains a standstill torque of 25 Nm, providing a high torque-to-speed ratio for low-speed holding or indexing duties. The mounting interface uses a square flange that measures 116 mm, enabling installation where IEC size-100 gearheads or couplings are already used. Its output shaft is machined to Ø 19×40 mm, which provides adequate engagement length while limiting rotational inertia. Magnet excitation is provided by Ferrite material, so demagnetization resistance remains suitable for ambient temperatures common in machinery enclosures. The shaft is supplied without a keyway, so torque transfer requires a clamp-style or shrink-fit connection.
The motor is supplied without a brake, so any vertical or safety-critical axis requires an external holding mechanism or a drive-controlled stop when power is removed. Its brushless layout supports repeated positioning cycles without wear from brush contact, which helps maintain stable operation in automated systems. The permanent-magnet rotor supports fast response to command changes, making the motor suitable for indexing, transfer, and positioning tasks. Its compact mechanical arrangement also suits installations where couplings, gearheads, and nearby axis components must fit within limited machine space.
