Product Description:

The SF-B5.0250.030-04.050 is a permanent-magnet servo motor manufactured by Bosch Rexroth Indramat in the SF Servo Motors series. Classified under construction type IM B5, it uses a flange mount to bolt directly to machine plates while its keyed shaft engages drive elements without additional couplings. In industrial automation, it provides closed-loop torque and speed control for indexing tables, carton erectors, and similar equipment where repeatable motion profiles are required.

The motor reaches a rated velocity of 3000 rpm, allowing cyclic moves to be completed quickly. Its torque constant is 1.44 Nm/A, which links drive current to output torque so the controller can calculate setpoints. Position feedback is supplied by a single-turn absolute encoder that delivers 8 million increments per revolution, giving fine resolution for contouring tasks. An enclosure rating of IP67 protects the windings from dust and temporary immersion. For static loads, the integrated holding brake supplies 56 Nm of torque while drawing 1.33 A from a 24 VDC supply, preventing drift during power-off conditions. Power conductors are routed through a 4 × 2.5 mm² motor cable, while feedback and brake leads exit separately to simplify wiring and help keep low-level signals away from the motor power leads.

When motion starts from rest, the rotor can withstand a locked-rotor torque of 23 Nm, and the drive may deliver up to 16 A without mechanical slip if the motor stalls. Dynamic behavior is aided by a rotor inertia of 83 x 10^-4 kg·m², a value that balances acceleration capability with load stability. The brake conductors use a cross-section of 2 × 1.5 mm², separating brake wiring from control circuits. Output power is transferred through a shaft sized at Ø32 × 58 mm and finished with a keyway and feather key for positive torque transmission. The shaft dimensions also support coupling selection where a keyed output is required.