Product Description:

The SD-B4.180.020-01.000 is a servo motor produced by Bosch Rexroth Indramat within the SD Magnet Motors series. It serves as the primary rotary actuator in automated machinery, converting commanded current into rotational motion for tooling, positioning tables, and transfer mechanisms. Its permanent-magnet topology eliminates brush wear, allowing continuous service in production environments that demand accurate speed regulation and rapid cycling. This operating profile suits equipment that requires frequent starts, stops, and repeatable rotary motion during normal production.

An external mounting face sized at 142 mm provides a standardized flange interface, so the housing can bolt directly to gearboxes or machine frames without shims. Inside the stator, a Ferrite magnet set establishes the fixed flux field and helps maintain magnetic stability over time. The motor reaches a rated speed of 2000 rpm, and the connected drive must supply the corresponding electrical frequency for closed-loop operation. The unit is a brushless servo motor, so commutation is handled electronically by the drive rather than by mechanical contacts. Coupling to the load is done through a shaft with overall dimensions of Ø 24x50 mm, giving enough engagement length for standard clamping hubs and similar coupling elements.

The cylindrical journal has a diameter of 24 mm, which supports common keyway or shrink-fit connections used in industrial drive trains. Its shaft length of 50 mm provides axial overlap that helps reduce fretting during reversing torque and repeated direction changes. At standstill, the motor can produce 18.0 Nm of torque to resist external loads while the axis is held in position. This combination of shaft geometry and holding capability supports stable torque transfer on positioning axes, transfer units, and other machinery that relies on controlled rotary output.