Product Description:

The SF-A4.0230.030-14.000 is a servo motor produced by Bosch Rexroth Indramat within the SF Servo Motors series. As a rotary actuator, it converts electrical energy into controlled mechanical motion for positioning tasks in industrial automation cells, gantries, and material-handling axes. When paired with a compatible drive, it supports accurate speed and position control during automated motion.

At its rated speed of 3000 rpm, the motor delivers continuous velocity that aligns with drive frequencies common in 1:1 gearless connections. The electromagnetic design produces torque in proportion to phase current, modeled by a 1.57 Nm/A torque constant, so a 10 A command corresponds to roughly 15.7 Nm of developed torque. During start-up, the stator can withstand a 22 Nm locked-rotor condition, and the drive must supply the associated 14 A locked-rotor current for fuse and cable sizing. Dynamic behavior is influenced by a 54 × 10⁻⁴ kg·m² rotor inertia, giving moderate acceleration without excessive servo gain. Mechanical integration is simplified by a 142 mm square mounting flange, and the smooth shaft profile eliminates keyway stress concentrations when used with backlash-free clamping hubs.

For position-secure shutdowns, the motor carries a spring-applied brake that supplies 18 Nm of holding torque once power is removed. The brake circuit operates from 24 VDC and draws only 0.7 A when released, helping limit cabinet power dissipation. Clamping begins after a 25 ms mechanical delay and is fully open within the 50 ms separation time, and its 3.1 × 10⁻⁴ kg·m² inertia adds little to the overall motor load. Feedback is provided by a single-turn absolute encoder with 8 million increments per revolution, delivering high-resolution position data to the drive. Final power transmission occurs through a 24 × 50 mm smooth shaft, allowing rigid collet connections that preserve the servo’s accuracy without backlash.