Product Description:

The SF-A5.0460.030-14.067 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the SF Servo Motors series. It converts controlled electrical input into precise rotary motion for indexing tables, pick-and-place heads, and other automated axes. With an integrated holding brake and high-resolution feedback, the unit maintains axis position during power loss and shortens settling times, helping machinery meet strict cycle-time requirements.

The holding brake is sized for 56 Nm of static torque, allowing the shaft to stay locked under full load when power is removed. To energize the brake, the drive supplies 1.33 A at 24 VDC. Its copper mass of 3.8 kg and rotational inertia of 30 × 10⁻⁴ kg·m² affect stopping behavior during emergency cycles. Rotor feedback comes from an absolute encoder that delivers 8 million increments per revolution and maintains ±20 arc-second accuracy, so servo loops can settle within fractions of a degree. A torque constant of 1.58 Nm/A links commanded current to developed torque, and the motor reaches a rated mechanical speed of 3000 rpm without entering field weakening. Dual NTC sensors embedded in the windings feed real-time temperature data to the controller to help prevent thermal saturation.

The power section is driven by a DC link of 670 V, ensuring sufficient voltage margin for rapid acceleration. When the rotor is blocked, the motor can withstand a locked-rotor torque of 46 Nm and will draw 29 A of locked-rotor current, values used by the drive to set stall protection thresholds. The 190 mm mounting flange provides ample surface for heat dissipation and matches common ISO frame patterns for mounting. In normal operation, the encoder’s absolute position word eliminates the need for homing after power loss, and the brake inertia contributes to smoother deceleration at shutdown.