Product Description:

The SD-B4.140.030-04.000 is a brushless servo motor manufactured by Bosch Rexroth Indramat within the SD Magnet Motors series. The unit converts electrical power into controlled rotary motion for positioning axes, material-handling arms, and other industrial automation tasks that depend on repeatable torque delivery and stable speed control. It is intended for motion systems that require accurate response during acceleration, deceleration, and steady running.

The motor develops a standstill torque of 14.0 Nm, so it can support zero-speed holding or launch loads smoothly when the drive remains energized. For static holding, its brake supplies 9.5 Nm of torque to secure the shaft after drive power is removed. During normal operation, the rotor reaches a nominal speed of 3000 rpm, which suits servo controllers matched to this operating range. A flange diameter of 142 mm provides the mounting interface for machine connections based on common IEC frame dimensions. The magnetic circuit uses Ferrite material, which offers stable magnetic performance over a wide temperature range. Mechanical power is transferred through a shaft measuring ø 24 × 50 mm, giving suitable contact length for keyed hubs or shrink-fit couplings.

The motor is supplied as basic equipment with a disk brake, so a separate brake assembly is not needed for applications that require shaft holding after power removal. Its design is that of a brushless servo motor, which means electronic commutation replaces carbon brushes and helps reduce wear in continuous-duty service. The unit is supplied in a standard configuration without application-specific seals, coatings, or additional sensor packages. This layout keeps the motor focused on general industrial use where consistent torque control and dependable electronic operation are required.