Product Description:

The SF-A2.0026.030-14.050 is a brushless servo motor produced by Bosch Rexroth Indramat within the SF Servo Motors series. Designed for industrial automation, it converts drive current into precise rotary motion while an integral brake maintains shaft position during power-off intervals. Compact dimensions and sealed construction allow the motor to be mounted close to machinery where accurate positioning and repeatable speed control are required. This layout suits servo axes installed in enclosed or space-limited equipment. It is well suited for indexing tables, feed axes, and handling equipment that require stable motion in a compact envelope.

During continuous operation, the rotor can spin at up to 3000 rpm, and each ampere of phase current produces torque according to a constant of 1.5 Nm/A. Dynamic response is aided by a rotor inertia of only 4 × 10⁻⁴ kg·m², which helps keep acceleration times short. The electromagnetic brake is energized from a control supply of 24 VDC and releases when that voltage is present, drawing a rated current of 0.56 A. Control electronics connected to a DC link of 670 V can use the motor’s locked-rotor values for static holding, where 1.7 A of current produces 2.6 Nm of stall torque. Brake inertia is 0.4 × 10⁻⁴ kg·m² and brake mass is 0.35 kg, adding little overhead to the drive train, while a separation time of 29 ms helps limit start-up delays. This arrangement supports responsive axis motion in compact machine layouts.

The holding brake secures up to 3.2 Nm, allowing vertical or load-suspended axes to remain stationary without external clamps. Axial loads up to 70 N can be applied to the shaft, and a shock resistance of 6 g helps protect the rotor assembly from abrupt impacts during handling or transport. Once the brake coil is de-energized, torque is fully available after a mechanical delay of 19 ms, coordinating stop commands with mechanical engagement. This helps the axis remain in place when external gravity or process loads act on the shaft.