Product Description:

The Bosch Rexroth Indramat SF-A2.0041.030-04.000 is a compact synchronous servo motor in the SF Servo Motors series. Designed for closed-loop motion axes, the unit converts drive current into precise rotary torque for positioning, feed, and auxiliary tasks on packaging lines, printing machinery, and general automation equipment. Its mechanical interface follows a standard flange pattern for straightforward integration with planetary gearboxes or belt transmissions. The built-in feedback system supplies the controller with absolute rotor position data, which supports repeatable motion control without requiring an external position sensor.

At a rated speed of 3000 rpm, the motor delivers continuous torque while keeping iron and copper losses within thermal limits. The electromagnetic design uses a torque constant of 1.43 Nm/A, so output torque rises in direct proportion to phase current within the operating range. If the shaft is intentionally blocked during a controlled test or by a fault, the motor can withstand a locked-rotor torque of 4.0 Nm, and that condition requires a locked-rotor current of 2.8 A. Dynamic response is influenced by a total rotor inertia, including the encoder, of 6 × 10⁻⁴ kg·m², which helps the axis accelerate and decelerate with limited overshoot.

Position holding after motion is provided by a spring-applied, electrically released brake with 3.2 Nm of static torque. The brake releases when supplied with 24 VDC and draws a rated coil current of 0.56 A during operation. Absolute rotor feedback is generated by a single-turn STG encoder that offers 8 million increments per revolution, giving the control loop fine resolution for accurate positioning. The motor also has a 253 mm housing length, a mass of 7.4 kg, a 14 mm keyed shaft, and a 95 mm pilot diameter for consistent alignment with couplings or pulleys.