Product Description:

The SF-A2.0026.030-04.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SF Servo Motors series. Designed for closed-loop positioning tasks, the unit interfaces with drive controllers to deliver commanded angular displacement, velocity, and torque to machinery such as pick-and-place modules, conveyors, or indexing tables. Its integrated single-turn absolute encoder feeds back precise rotor angle to the control system, allowing immediate commutation without homing at power-up. The motor serves as an electromechanical actuator that translates electrical input from the servo drive into tightly regulated rotary motion for industrial automation.

The motor uses a square flange for direct mounting to standard machine interfaces. The square flange measures 100 mm, so the housing seats directly against industry-standard gearboxes or machine frames. Power is transmitted through a keyed shaft that measures Ø14 x 30 mm, and a feather key of A5 × 5 × 25 helps secure couplings against slip. Dynamic response benefits from the aluminum rotor inertia of 4 x 10^-4 kg·m², which supports rapid acceleration and deceleration cycles. Continuous electromagnetic loading is limited by a standstill phase current of 1.7 A. Combined with the torque constant of 1.5 Nm/A, that current indicates the motor’s zero-speed stall capability for static axis loads.

Positional stability during power-off is handled by an integrated holding brake rated for 3.2 Nm of static torque. The brake engages when a supply of 24 VDC ±10% is removed, draws 0.56 A while energized, and adds 0.35 kg to the rotor side. It also reflects 0.4 × 10⁻⁴ kg·m² of inertia to the axis, and the complete assembly weighs 6.5 kg. Overall length with the brake is 229 mm, which leaves space for the encoder electronics. Feedback precision reaches ±20 arcsec / 8 million counts per revolution through the single-turn STG device, supporting accurate high-speed indexing.