Product Description:

The SF-B4.0172.030-14.056 is a servo motor produced by Bosch Rexroth Indramat within the SF Servo Motors series. It converts DC link energy into rotational motion, and an integrated holding brake secures the shaft when power is removed. Intended for closed-loop axes in assembly lines or machining centers, the unit stores identity and parameter data in an electronic rating plate, which supports setup in multi-axis drive systems. This combination of motor, brake, and feedback functions allows the drive to control motion accurately during positioning and speed-regulated operation.

The brake can resist a load of 18 Nm, and its rotor adds only 3.1 × 10⁻⁴ kg·m² of inertia, so braking force remains high without causing a large penalty in acceleration response. Brake release is governed by a supply of 24 VDC ±10% that draws a continuous 0.7 A. The power stage is fed from a 670 VDC link, which supports stable motor operation at elevated bus voltage. Under rated conditions, the shaft reaches 3000 rpm, matching many common gearbox ratios used on material-handling equipment. Absolute encoder feedback reports position directly to the control system, while temperature-sensitive sensors in the stator help the drive respond to rising internal heat before operation becomes unstable.

During startup, the motor can withstand a locked-rotor current of 13 A while producing strong starting torque for high-inertia loads as motion begins. The housing carries a sealing classification of IP67 on every surface except the output shaft, allowing washdown cleaning without additional covers in suitable machine areas. Internal thermal surveillance relies on two NTCs that send real-time temperature data to the drive so current can be reduced before insulation temperatures rise too far. A torque constant of 1.38 Nm/A links commanded current to mechanical output, which helps the control loop maintain predictable response during fine speed regulation and position changes.