Product Description:

The SD-B4.070.030-00.000 is a permanent-magnet servo unit produced by Bosch Rexroth Indramat within the SD Magnet Motors series. It is a brushless rotary actuator intended to deliver repeatable torque and speed commands to machinery such as indexing tables, pick-and-place axes, packaging spindles, and similar automated stations. By combining a rotor with bonded ceramic magnets and stator windings sized for medium-inertia loads, the motor supports closed-loop motion control when paired with a compatible drive and feedback device. The servo format is suited to machines that need smooth low-speed control as well as rapid transitions between indexed positions during normal production cycles.

Its nominal shaft velocity reaches 3000 rpm, allowing the connected drive to synchronize motion cycles without gear reduction. A ferrite pole set is used, and the stable magnetic characteristic of the Ferrite material provides consistent flux while reducing demagnetization risk at moderate temperatures. Mounting occurs on a square flange that measures 142 mm across, giving a clear reference surface for direct coupling to gearheads or machine frames. The flange face also helps keep shaft alignment consistent where the motor is mounted directly to a gearbox or drive stage. Output power is delivered through a shaft with keyway and featherkey, which simplifies torque transfer to pulleys or couplings and helps prevent rotational slip under load. The electromagnetic package develops a standstill torque of 7.0 Nm, so the motor can maintain commanded holding force when the drive applies current at zero speed.

The mechanical interface is completed by a cylindrical journal sized at Ø 24 × 50 mm, a proportion that supports torsional rigidity while staying within typical bearing load limits for this frame. Because the unit is a brushless servo motor, commutation is handled electronically, which eliminates carbon contact wear and supports higher duty cycles during frequent starts and stops. Electronic commutation also supports clean reversal during repetitive bidirectional moves, which is useful on feed axes and transfer mechanisms. The motor follows the standard configuration used in the SD Magnet Motors line, with the baseline mechanical and electromagnetic arrangement for this platform. That arrangement keeps electrical matching straightforward with compatible control hardware and supports repeatable operation in automated equipment that relies on precise rotary motion.