Product Description:

Bosch Rexroth Indramat manufactures the SF-A4.0125.015-14.050 as part of its SF Servo Motors series. This brushless servo motor is intended for precise axis control in packaging, handling, and metal-working equipment, where coordinated motion profiles are executed by a drive controller. By delivering commanded torque instantaneously and reporting absolute shaft position, the unit enables repeatable indexing, contouring, and speed regulation tasks that demand high accuracy and low cycle times in industrial automation.

The motor mounts through a 142 mm flange, allowing direct attachment to standard IEC gearboxes without alignment rings. At a rated speed of 1500 rpm, the winding produces continuous mechanical output while staying within thermal limits monitored by two integrated NTC temperature sensors. A torque constant of 2.8 Nm/A links output torque to drive current, giving predictable load response. Position feedback comes from an absolute encoder with 8 million incremental steps per revolution, and its ±20 angular-second precision supports fine interpolation in multi-axis systems. For safety, a permanent-magnet holding brake supplies 18 Nm of static torque and draws 0.7 A when engaged, so vertical axes remain locked during power loss.

The electromagnetic brake is energized by a 24 VDC ±10% supply with 5% ripple tolerance, keeping control wiring compatible with common machine safety circuits. During startup, the motor can deliver a blocked-shaft torque of 14.5 Nm while the drive limits phase current to a stalled value of 5.2 A to protect semiconductors. The rotor’s mass moment of 30 × 10⁻⁴ kg·m² balances quick acceleration with smooth running in indexing tables. A shared DC link rated at 670 V feeds the inverter, allowing energy exchange among multiple axes and minimizing line-side harmonics.