Product Description:

The SD-B3.066.030-04.000 is a brushless servo motor built by Bosch Rexroth Indramat. Designed for position and velocity control on compact axes, the unit converts drive current into rotary motion without mechanical commutation. Within an automation cell, it provides precisely regulated torque so actuators, gantries, or small indexing tables can follow program commands under closed-loop feedback. This operating principle supports smooth low-speed motion and repeatable starts and stops on short-cycle machinery.

The motor is supplied as basic equipment with a disk brake, meaning a spring-applied mechanical brake is already mounted for secure load holding when the drive is disabled. A flange diameter of 116 mm matches standardized mounting faces on compact gearboxes and helps keep alignment straightforward during installation. Power is transmitted through a shaft sized at Ø 19 × 40 mm, giving enough surface area for keyed or clamped couplings without excessive overhang. Rotor excitation is produced with ferrite magnets, a material choice that provides stable magnetic flux over a broad temperature range. During static positioning, the integrated magnetic circuit delivers a holding torque of 4.0 Nm, which helps the axis remain stationary at standstill. The brake also helps limit drift after power removal on vertical or offset loads.

The unit is classified as a brushless servo motor, so commutation is handled electronically by the drive controller and no brushes require service. It uses a standard configuration for this product line, with the usual insulation, feedback, and cooling arrangement for this model. The motor belongs to the SD Magnet Motors series, which shares a common platform across related torque ranges. This arrangement supports integration with compatible drives and cabling used on similar axes.