Product Description:

The SD-B3.068 030-00 000 is a brushless servo motor manufactured by Bosch Rexroth Indramat within the SD Magnet Motors series. In automated production cells, it converts electrical commands from a drive controller into precise rotary motion for positioning, indexing, and speed-regulated tasks on packaging lines, gantries, and material-handling stations. Its role in the motion system is to translate commanded electrical input into controlled shaft rotation that can be synchronized with other machine movements. Ferrite magnets establish the motor’s synchronous field without rare-earth materials, and the keyed shaft configuration supports positive torque transfer to the driven load.

During operation, the drive limits phase current to 50% when internal sensing predicts overheating, which helps protect the stator windings before a full thermal shutdown is required. The position and velocity transducers operate from a symmetrical ±15 V DC supply, and their signals pass through a hybrid feedback lead with 10 × 0.14 mm² + 4 × 0.5 mm² conductors to balance bandwidth with voltage drop. This cable arrangement allows the feedback circuit to carry low-level signal paths together with support conductors in a single run. If rotation is blocked, the controller waits 2 s before registering a fault, which helps avoid nuisance trips during short process jams. A built-in tacho generator supplies 2.7 V per 1000 rpm with ±5% accuracy so analog speed loops can respond quickly to load changes.

Mounting follows an IEC pattern with a 116 mm square flange, and the output shaft measures ø 19 × 40 mm for couplings that use a keyway. Emergency stopping requires an energy sink capable of absorbing 293 Ws, and an integrated 3.3 Ω short-circuit resistor assists in dynamic braking during deceleration events. Encoder signals can be routed up to 100 m without active repeaters, which supports longer machine layouts where the cabinet and motor are installed far apart. The winding has a cutout temperature of 140 °C, and once that limit is reached the drive disconnects the stator to help prevent insulation damage.