Product Description:

The SD-B4.140.020-00.000 is a servo motor built by Bosch Rexroth Indramat within the SD Magnet Motors series. It is intended for position and speed control in automated machine axes and material-handling stations where electronically commutated drives reduce wear associated with contact-based commutation. The model converts electrical power into regulated mechanical torque through permanent magnets and works with compatible drive controllers to form a closed-loop motion system. Its mechanical interface follows industry-standard square flange dimensions, which helps the motor mount directly to gearboxes or load couplings without special adapter plates.

At standstill, the motor can deliver 14.0 Nm of continuous torque, allowing it to hold tooling or conveyance loads without additional gearing. During rated operation, it rotates at 2000 rpm, a speed suited for moderate-throughput packaging lines and indexing tables. The mounting face uses a 142 mm square flange, so the bolt pattern aligns with size-140 housings in the SD series. Power is transmitted through a cylindrical shaft measuring ø 24x50 mm, providing a practical interface for common clamping couplings while keeping reflected inertia manageable. The magnetic circuit uses Ferrite poles, which support stable magnetic performance in continuous servo duty.

The rotor output passes through a shaft with a keyway that accepts a DIN-6885 parallel feather key, helping prevent slip during reversing motion and repeated acceleration. Because it is a brushless servo motor, commutation is handled electronically by the drive, eliminating brush wear and supporting smooth torque production across the speed range. The unit is supplied in a standard configuration without custom seals, sensors, or cooling attachments. This layout keeps the motor suitable for general machine-axis use where standard mounting, keyed torque transfer, and closed-loop servo control are required.