Product Description:

The SF-A1.0012.060-14.050 is a brushless servo motor produced by Bosch Rexroth Indramat within the SF Servo Motors series. Intended for compact positioning axes, the unit translates drive current into controlled torque and speed so assembly robots, feeders, and inspection heads can move with repeatable accuracy. It integrates a permanent-magnet rotor and a spring-applied brake, allowing the axis to retain shaft position when power is removed. This makes the motor well suited for compact automation assemblies that require precise motion and stable holding between moves.

Mechanical dimensions start with a flange square of 70 mm, allowing straightforward attachment to lightweight gearheads or direct-drive frames, while the shaft measures 11 mm in diameter and 23 mm in length for DIN-compliant coupling. The motor has a torque constant of 0.64 Nm/A, so each ampere from the drive converts to proportional rotary force. When locked, the rotor can deliver 1.2 Nm while drawing 1.9 A, and this operating point is paired with a rated running speed of 6000 rpm. The laminated rotor carries an inertia of 0.63 ×10⁻⁴ kg·m², enabling rapid acceleration with minimal overshoot, and it tolerates an external axial load of 33 N along the shaft for moderate thrust from ball screws or belts.

Position feedback is provided by a single-turn absolute encoder of the STG type that resolves 8 million incr./rev. and maintains measurement within ±20 arc-seconds, supporting fine interpolation in digital drives. The holding brake engages automatically at 24 VDC and delivers 2.0 Nm to secure the load; its coil draws 0.4 A and adds only 0.12 ×10⁻⁴ kg·m² to the reflected inertia, so response times remain sharp. The encoder and brake arrangement supports accurate stop-and-hold behavior during repeated indexing cycles. It also helps the axis settle quickly and remain in position between commanded moves.