Product Description:

The SF-A2.0020.060-04.050 is a permanent-magnet servo motor developed by Bosch Rexroth Indramat within the SF Servo Motors series. It is intended for closed-loop positioning and velocity control on packaging machines, pick-and-place gantries, and other automated stations that demand high spindle speed. By coupling directly to the load through its 14 mm by 30 mm shaft, the unit delivers backlash-free drive torque, while the absolute encoder supplies immediate position feedback to the motion controller. This arrangement supports precise starts, stops, and speed changes during repetitive machine cycles.

At a rated speed of 6000 rpm, the motor converts direct-current energy from a link voltage of 670 VDC into synchronized rotary motion. Its electromagnetic design yields a torque constant of 0.74 Nm/A, so each ampere of phase current produces nearly three-quarters of a newton-meter. During a blocked-rotor start, the windings can accept 2.7 A, generating enough locked-rotor torque to overcome static friction in the driven mechanics. The aluminum housing is sealed to IP67, allowing operation in washdown or dusty areas, and the IM B5 flange construction supports face mounting to gearboxes or machine frames. Shock resistance up to 6 g helps protect internal parts, and the integrated absolute encoder removes the need for a homing cycle after power is restored.

An electromechanical holding brake is integrated to secure vertical or suspended axes. It supplies 3.2 Nm of static torque when powered by 24 VDC and draws only 0.56 A, which keeps the control cabinet load low. Once engaged, the brake can hold position if link power is removed, which is useful during service or emergency stops. Bosch Rexroth Indramat specifies a minimum operating life of 20,000 h, reflecting the use of high-grade bearings and insulation. The 14 mm keyed shaft and sealed housing support extended duty cycles in dynamic multi-axis cells.