Product Description:

The SR-A3.0093.060-04.000 is a brushless synchronous servo motor manufactured by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. It acts as the rotary actuator in industrial automation systems, where the drive controller modulates phase currents to position tooling, conveyors, or process equipment. A compact stator, permanent-magnet rotor, and sealed housing let the unit deliver precise motion in confined machine cells. That arrangement helps the motor fit packaging, transfer, and handling systems where available installation space is limited but repeatable motion remains critical.

The motor has a nominal speed of 6000 rpm, which keeps back EMF within inverter limits while leaving headroom for overspeed detection. Its torque constant is 0.67 Nm/A, so each ampere delivered by the drive produces just over two-thirds of a newton-meter. When the shaft is locked, the motor can develop 9.3 Nm of stall torque, and doing so draws a peak phase current of 13.5 A. Coupled with a rotor inertia of 15.8 × 10⁻⁴ kg·m², this combination supports quick response while helping the axis remain stable under changing loads. Mechanical connection is through a 19 mm × 40 mm keyed shaft, and the 116 mm square flange permits direct mounting to gearheads or machine frames.

For vertical axes or emergency holding, an integral brake supplies 10.0 Nm of static torque and is energized at 24 VDC. The release coil draws 0.66 A, which keeps control power demand relatively low. The housing has an IP67 (without A-flange) rating, so it resists dust and temporary immersion when cables are sealed. Heat is dissipated through radiation and natural convection, eliminating the need for forced-air ducts. Class F insulation protects the stator windings during frequent start-stop duty, and a resolver on the rear end bell supplies position signals for commutation and closed-loop control. This feedback method lets the drive track rotor angle across the operating range without relying on open-loop timing.