Product Description:

The SF-A4.0091.030-14.053 servo motor is produced by Bosch Rexroth Indramat within the SF Servo Motors series. It supplies closed-loop rotary motion for CNC axes, packaging equipment, and general automation tasks that rely on precise torque regulation. An absolute encoder feeds position back to the drive, while two NTC temperature sensors monitor winding heat to help prevent overload. The compact housing supports direct flange installation in space-limited machine layouts.

At its rated speed of 3000 rpm, the rotor completes fifty revolutions per second under continuous load. Torque rises linearly with current thanks to a constant of 1.42 Nm/A, allowing predictable motor response from the amplifier. The intermediate circuit accepts 670 V DC link voltage, keeping phase currents moderate and limiting resistive loss during acceleration. Under locked-rotor conditions, the shaft resists 10 Nm while drawing 7.0 A; these figures set inverter current limits at startup and during emergency stops. Brake inertia of 3.1 × 10⁻⁴ kg·m² and a 5% brake ripple support stopping behavior without compromising positioning accuracy.

Mechanical retention is provided by a spring-applied brake that releases at 24 VDC within the specified ±10% tolerance. Once engaged, it holds the shaft with 18 Nm of static torque and draws only 0.7 A, reducing standby heat in vertical axes. The motor is prepared for flange mounting in the IM B5 style, so the driven load couples directly to the shaft while the stator housing bolts to machinery. A rotor inertia of 21 × 10⁻⁴ kg·m² aligns with the brake inertia to support responsive motion. Two integrated NTC sensors relay temperature data so operation stays inside thermal limits during high-cycle duty, and the absolute encoder preserves position across power cycles for immediate restart.