Product Description:

The SF-B4.0172.030-14.030 is a servo motor manufactured by Bosch Rexroth Indramat as part of the SF Servo Motors series. Intended for industrial automation, the motor links a drive controller to mechanical loads so that commanded current results in proportional torque at the output shaft. This electromechanical conversion lets machine tools, pick-and-place gantries, and packaging axes reach repeatable positions and speeds within tight cycle-time limits. It is suited for motion tasks that require controlled acceleration, stable running, and accurate stopping during repeated production cycles.

The electromagnetic brake secures the load when power is removed and can resist up to 18 Nm of static torque. Its coil is energized from a 24 VDC control bus and draws only 0.7 A, which helps limit heat buildup inside compact control cabinets. A square mounting interface of 142 mm on the front flange aligns the stator housing with gearboxes or thrust bearings without shims. During motion, the windings deliver torque in proportion to current at a constant of 1.38 Nm/A, allowing the controller to predict load response accurately. The shaft is cut to 24 x 50 mm, so standard keyed hubs or coupling sleeves can transmit torque without auxiliary adapters.

When the shaft is locked, peak line current can rise to 13 A, and this inrush value helps with sizing of fuses and drive semiconductors. Dynamic stopping is helped by a brake inertia of 3.1 ×10⁻⁴ kg·m², while the rotor itself stores kinetic energy equivalent to 40 ×10⁻⁴ kg·m². Under rated excitation, the motor reaches a constant speed of 3000 rpm, matching common spindle or feeder requirements. Locked-rotor torque matches the brake's static rating, which keeps holding and starting behavior in the same range. The current and inertia data are useful for estimating stopping behavior and load response in the driven axis.