Product Description:

The SD-B5.250.015-04.000 is a servo motor produced by Bosch Rexroth Indramat within the SD Magnet Motors series. It is intended for closed-loop motion axes where precise acceleration, deceleration, and positioning cycles must be executed under the control of a Rexroth drive controller. By translating electrical commands into rotary torque, the unit supports automation tasks such as pick-and-place heads, small conveyors, and indexing tables. Its compact mounting base allows closely spaced axis placement, while internal feedback helps keep velocity error low during continuous production.

Mounting is standardized by a 116 mm square flange that bolts directly to gearheads or frames without adapter plates. Power is transmitted through a precision shaft measuring ø 19 × 40 mm, a dimension that governs coupling selection and permissible radial load. Under rated electrical excitation, the rotor reaches a nominal speed of 1500 rpm, matching common mechanical transmission ratios used on 50 Hz lines. When motion is commanded from zero speed, the motor can deliver 25 Nm of standstill torque, letting the axis overcome static friction and process resistance. After the drive is disabled, the integrated brake clamps with a holding force of 36 Nm, preventing unintended drift or back-driving of vertically loaded assemblies.

The unit is supplied in the basic equipment with disk brake configuration, so no external caliper is required for emergency stops or power-off retention. Magnetic excitation is provided by ferrite segments, which help maintain stable motor operation and limit temperature rise during use. Because it is classified as a brushless servo motor, electronic commutation eliminates brush wear and reduces maintenance needs. The order code indicates the standard configuration, so sealing, paint, and connector orientation remain unchanged for this model.