Product Description:

The SR-A2.0041.030-14.000 is a synchronous servo motor built by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. The unit is intended as a rotary actuator for precision motion axes in automated machinery, supplying closed-loop speed and position control through a resolver feedback interface. When paired with a compatible drive, this motor converts electrical power into controlled mechanical torque that can be tuned to match indexing tables, pick-and-place heads, or packaging spindles in industrial production lines. Resolver feedback also gives the connected drive a continuous rotor-angle signal for commutation and speed regulation during repeated motion cycles.

The motor mounts to equipment frames through a 100 mm square flange, and its output shaft is machined as a Ø14 × 30 mm cylinder with an internal key for positive torque transfer. The electromagnetic circuit develops continuous torque according to a torque constant of 1.43 Nm/A, and the drive uses this relationship to maintain a rated speed of 3000 rpm across a broad load range. During startup, a locked-rotor current of 2.8 A can be applied to produce 4.0 Nm of stall torque and overcome static friction in connected mechanisms. Dynamic response is supported by a rotor inertia of 6 × 10⁻⁴ kgm², while resolver sensing maintains angle feedback without incremental dropouts. The keyed shaft format is suitable for couplings or pulleys that need positive torque transmission without slip under changing loads.

The motor carries a permanent-magnet holding brake for safe static positioning. When the brake is engaged, it provides 3.2 Nm of holding torque, and its internal mass of 0.35 kg adds only slightly to total system inertia. The brake coil operates at 24 VDC ±10%, and a normal service current of 0.56 A keeps the brake released while motion is commanded. Position feedback is supplied by a resolver with a theoretical interpolation of 8192 incr./rev and a stated precision of ±10 angular minutes, allowing accurate registration after power cycling. This arrangement helps the axis remain stationary when power is removed or when the machine is waiting between cycles.