Product Description:

The SF-A5.0250.020-10.050 is a servo motor manufactured by Bosch Rexroth Indramat for the SF Servo Motors series. It transforms regulated current from a drive into controlled rotary motion, allowing precise positioning and velocity control in automated assembly stations, packaging machinery, and CNC auxiliary axes. Closed-loop feedback from the drive aligns speed and torque with the commanded profile, so the motor can support repeatable moves, short cycle times, and stable motion during frequent starts and stops.

The motor uses a square flange of 190 mm that fits common ISO mounting patterns. Its housing has an IP67 rating, which blocks dust entry and permits temporary immersion during washdown exposure. Overall length is 300 mm, and the unit weighs 24 kg, so the mounting structure must support a relatively substantial motor body. The shaft has an exposed length of 58 mm and a diameter of 32 mm to transmit torque with stable alignment. Rotor inertia of 83 × 10⁻⁴ kg·m² adds moderate resistance to acceleration, which can help smooth rapid speed changes in pick-and-place or indexing motion. Continuous operation is rated at 2000 rpm, making the motor suitable for direct coupling to moderate-ratio gear stages and other speed-controlled rotary loads.

At startup, the locked-rotor current is 10 A rms, allowing the motor to produce a stall torque of 23 Nm for breakaway loads and static friction. Once the shaft is turning, the electromagnetic design provides a torque constant of 2.3 Nm/A, so output torque tracks commanded phase current in a predictable way. This current-to-torque relationship helps the connected drive regulate motion during low-speed positioning, acceleration, and steady-state holding without relying on indirect torque estimation.