Product Description:

The SF-A2.0020.030-14.053 belongs to the SF Servo Motors series manufactured by Bosch Rexroth Indramat. It is a permanent-magnet synchronous unit engineered for closed-loop position and velocity control in automated machinery, with a compact 100 mm mounting interface that fits standardized mechanical layouts. Within an automation cell, the motor converts regulated three-phase electrical power into rotary motion so that drives, actuators, or indexing tables can follow commanded profiles with high repeatability and minimal maintenance.

The motor reaches a rated speed of 3000 rpm, allowing moderate spindle or feed velocities while staying within the thermal envelope monitored by the pair of integrated NTC temperature sensors. A torque constant of 1.5 Nm/A indicates the proportional link between phase current and developed torque, which helps with current-loop tuning. The electromagnetic brake can hold up to 3.2 Nm when the axis is de-energized, and its inertia of 0.4 × 10⁻⁴ kg·m² has been considered in the total reflected load. A flange size of 100 mm provides a consistent face-mount pattern for gearboxes or machine frames. The windings are supplied from a drive with a DC link of 670 V, which supports quick acceleration without oversized conductors. Locked-rotor current is limited to 1.3 A to protect both the magnets and the thermal system during startup and emergency stops.

When stalled, the motor can generate 2.0 Nm immediately, and natural convection removes the resulting losses without auxiliary fans. The holding brake is energized by a 24 V DC supply and draws only 0.56 A, keeping the additional brake mass of 0.35 kg from having a large effect on dynamic response. Total rotational inertia including the encoder is 3 × 10⁻⁴ kg·m², which suits medium-inertia load chains that require smooth speed transients while avoiding oscillation. Two NTCs supervise winding temperature so the drive can prevent overheating during frequent starts that approach continuous-duty limits.