Product Description:

The SD-B3 068 030-00.000 is a brushless servo motor manufactured by Bosch Rexroth Indramat as part of the SD Magnet Motors series. It converts electrical energy from a compatible drive into controlled rotation for automated axes while returning real-time feedback signals for closed-loop positioning. Its permanent-magnet rotor and integrated sensing elements allow consistent torque production in packaging, assembly, and printing equipment that requires continuous duty operation. The motor is suited for applications that need stable speed control, repeatable positioning, and frequent start-stop motion during normal machine cycles.

It attaches to machinery through a flange that measures 116 mm and drives loads through a shaft measuring ø 19×40 mm with a keyway and featherkey interface. Internally, Ferrite magnets interact with three-phase windings, and the external power leads accept 1.5 mm² conductors. Six commutation signals, identified as A, B, C, 1, 2, and 3, are produced for the drive. Encoder electronics are energized from a balanced supply of ±15 V DC through a feedback cable sized at 10 × 0.14 mm² plus 4 × 0.5 mm². Controlled stopping uses a brake resistor rated at 3.3 Ω, which helps limit voltage rise during rapid deceleration.

Speed monitoring is delivered by a brushless DC tacho that generates 2.7 V/1000 rpm, and its linearity stays within a ±5 percent tolerance so the controller can regulate current accurately. The feedback link may extend to 100 m, which supports installations where the motor is mounted on moving carriages or at a distance from the drive cabinet. During emergency stops, the mechanical brake must absorb at least 293 Ws of kinetic energy. Thermal protection is supplied by a thermistor embedded in the windings, and the drive disables output whenever the copper reaches 140 °C to help prevent insulation damage and excessive magnet heating.