Product Description:

The SF-A5.0250.020-00.101 is a servo motor produced by Bosch Rexroth Indramat within the SF Servo Motors series. As a rotary actuator, it converts controlled electrical energy into precisely controlled mechanical motion for positioning tables, pick-and-place arms, and similar automation axes. An integrated absolute encoder streams real-time rotor angle data back to the drive, allowing closed-loop control without homing cycles and supporting coordinated multi-axis movement in factory environments.

The motor is energized from a DC bus rated at 670 V, so its associated inverter must maintain that link voltage to deliver full performance. Under continuous operating conditions, the shaft reaches 2000 rpm, a speed that balances rapid cycle times with manageable mechanical stress. If the load stalls, the windings can draw up to 10 A, and the electromagnetic circuit generates a locking torque of 23 Nm. Throughout the usable speed range, torque rises proportionally to current at a constant of 2.3 Nm/A, simplifying current-loop tuning and allowing straightforward load calculations. An oil-tight output flange keeps lubrication inside gearboxes or spindle housings while helping prevent contamination of surrounding components.

Dynamic behavior is influenced by a rotor inertia of 83 × 10⁻⁴ kg·m², giving moderate resistance to acceleration so the axis can change speed quickly while remaining stable under servo gain. During transport and in-service shocks, the unit tolerates impacts up to 6 g, reducing the need for additional damping hardware. Internal shaft seals withstand circulating lubricant pressures up to 1 bar, supporting external oil-bath installations. Mechanical interfacing follows the flange-mounted IM B5 construction code, and the keyway with a feather key on the shaft simplifies rigid coupling to pulleys or pinions without custom hubs.