Product Description:

The SF-A2.0020.060-14.037 is a brushless servo motor manufactured by Bosch Rexroth Indramat and placed in the SF Servo Motors series. In automated handling equipment or indexing tables, it converts controlled current from a drive controller into precise rotary motion while an integrated electromagnetic brake secures the axis during idle or power-off states. Its mechanical interface follows the square flange style common to modular machine frames, allowing straightforward integration into compact drive trains.

The electromagnetic holding brake is energized at 24 VDC, and at activation it draws only 0.56 A, so low-power I/O relays can release it without auxiliary supplies. Once voltage is removed the rotor settles after a 19 ms delay, keeping response times short for stop commands. The mounting face measures 95 mm in diameter, so the motor couples to gearboxes that use the standard B5 interface. During operation the feedback loop can command speeds up to 6000 rpm, a value matched to high-throughput packaging shafts, while the electromagnetic design delivers a torque proportionality of 0.74 Nm/A, simplifying current-based control algorithms and easing thermal calculations performed inside the drive.

Complementing the dynamic profile outlined above, the brake separates again in 29 ms, so the axis can accelerate almost immediately after the controller re-enables motion. When locked, the brake resists back-driving with 3.2 Nm of holding torque, preventing drift on vertical loads until commanded current exceeds that level. The assembly weighs 5.8 kg, a mass light enough for small-footprint gantries yet sufficient to damp vibration transmitted through the 14 mm shaft, which extends 30 mm beyond the flange to accept keyed couplings. Together with the specified standstill current of 2.7 A and the 2.0 Nm standstill torque, these mechanical factors allow the SF motor to maintain position accurately without overstressing the drive transistors during dwell periods.