Product Description:

The SF-A4.0172.030-10.154 is a servo motor produced by Bosch Rexroth Indramat as part of the SF Servo Motors series. As a rotary actuator, it converts electrical power into controlled mechanical motion for axes in industrial automation systems that require precise speed and position control. The motor communicates with its drive through a DC-link bus, and an absolute encoder supplies real-time shaft feedback to closed-loop regulators. This arrangement supports repeatable motion on transfer units, indexing tables, and similar automated mechanisms. It is suited for controlled axes that must start, reverse, and settle quickly without losing position reference during continuous machine cycles.

The motor’s mounting interface follows the IM B5 construction type, giving a flange diameter of 142 mm for face-mount installation. During normal operation, the shaft can reach a rated speed of 3000 rpm, which matches common servo drive profiles used in pick-and-place and indexing stations. The electromagnetic design produces torque in proportion to current, with a torque constant of 1.38 Nm/A, so drive response remains predictable as load demand changes. When the rotor is locked, the motor can deliver a stall torque of 18 Nm while drawing a locked-rotor current of 13 A. A DC link voltage of 670 V must be available from the drive to support these operating conditions and recover energy during dynamic braking.

Dynamic characteristics are influenced by a rotor inertia of 40×10⁻⁴ kg·m², which balances quick acceleration with stable coupling to the load. Axial loads up to 154 N can be applied without exceeding the bearing limit, supporting direct connection of pulleys or screw drives. The winding is monitored by 2 NTCs, which allow the drive to reduce current before thermal limits are reached. The sensor arrangement gives the drive an early thermal warning, which helps prevent overload-related shutdowns during repeated acceleration and deceleration sequences. The housing is sealed to IP 67, so it resists dust ingress and high-pressure water exposure on the production floor.