Product Description:

Bosch Rexroth Indramat manufactures the SF-B4.0172.030-10.056 as part of the SF Servo Motors series. This motor supplies controlled rotary power for machine tools, material-handling stations, and other motion axes in automated plants where repeatable speed and position profiles are required. By receiving three-phase power from a matching drive controller, the unit translates electrical energy into mechanical torque that can be coupled to gearheads or directly to a load. Its construction follows the IM B5 mounting style, which supports flange installation without a foot plate. This arrangement suits machine faces where a base-mounted motor would take more space.

The motor uses a 670 V DC link supplied from the converter’s intermediate circuit, and this high voltage reserve permits fast current changes required for dynamic moves. When driven from that bus, the rotor can reach a rated speed of 3000 rpm, giving a balance between throughput and thermal loading. The torque constant of 1.38 Nm/A shows how winding current is converted into shaft torque. Mechanical integration is simplified by a flange diameter of 142 mm, which aligns with standard mounting faces. The 1.5-size, 8-pin power connector provides a single plug-in point for phase, ground, and sensor leads, helping keep cable routing orderly near the axis.

For startup and holding conditions, the motor develops a locked-rotor torque of 18 Nm and draws 13 Arms of current, figures that help size fuses and drive safeguards. During transport and installation, the assembly withstands shocks up to 6 g, limiting the risk of internal component damage. Dynamic response is aided by a rotor moment of inertia of 0.0040 kg·m², allowing rapid acceleration without overshoot. Low inertia also helps the axis respond quickly to command changes during short indexing moves. Acoustic emission remains below 58 dB(A) at nominal load, which supports use in quieter work areas.