Product Description:

The SF-A5.0460.030-10.019 servo unit is produced by Bosch Rexroth Indramat as part of the SF Servo Motors series. It is designed for positioning and velocity control tasks in automated machinery, where it converts direct current supplied by a drive into precisely metered rotary motion. The motor supports machine tools, handling systems, and packaging lines that require repeatable speed profiles and steady torque delivery under closed-loop control. This operating role helps the axis respond accurately during repeated starts, stops, and speed changes. In these environments, the unit mounts on a flange and connects to a compatible drive controller through a keyed power connector and feedback channel.

When driven from the DC bus, the stator windings see up to 670 V of link voltage, which is the upper electrical limit the associated inverter must regulate. At standstill, a locked shaft draws 29 A, and this current sets the peak demand on fuses and cables during startup. The corresponding locked-rotor torque reaches 46 Nm, providing breakaway force for high-inertia loads when motion begins. Once released, the rotor attains its rated speed of 3000 rpm, which suits common spindle and indexing duties. The magnetic design yields a torque constant of 1.58 Nm/A, so phase current produces a predictable torque response for stable servo control.

The shaft may accept up to 380 N of axial load, allowing direct belt tension or helical gear thrust without additional bearings. Power conductors use 4 × 10 mm² leads and terminate on a size 1.5 circular connector, which keeps the electrical interface compact and secure. A plug-in braking resistor of 1.0 Ω dissipates regenerative energy during rapid deceleration, helping control DC bus rise on stopping moves. The motor withstands transport shocks up to 6 g, and two embedded NTC sensors report winding temperature to the drive so thermal protection can respond before overheating affects insulation.