Product Description:

The SR-A3.0093.030-14.000 is a synchronous servo motor produced by Bosch Rexroth Indramat as part of the SR Synchronous Servo Motors series. The unit converts controlled electrical power into rotary motion for positioning axes, feed drives, and other closed-loop tasks inside automated machinery. By combining permanent-magnet excitation with resolver feedback, it supplies precise speed and torque control needed for repeatable industrial processes. Its mechanical envelope follows the DIN flange interface used throughout the manufacturer’s drive platform.

Mechanically, the motor mounts on a 116 mm flange and presents a smooth Ø19 × 40 mm shaft that mates with clamp or collet couplings. Overall length reaches 287 mm when the optional brake is omitted, keeping the motor well suited for medium-capacity axes. The magnetic circuit delivers a rated speed of 3000 min⁻¹; at that operating point, torque develops proportionally to current at a constant of 1.35 Nm/A. A resolver supplies coarse absolute feedback, while the built-in encoder provides 8192 incr/rev for fine interpolation by the drive controller. During startup, the stator can withstand a locked-rotor current of 6.0 A and produce a stall torque of 8.1 Nm, and these values help set amplifier current limits and acceptable mechanical loading.

For static holding or emergency stops, a spring-applied brake uses 24 VDC, draws 0.66 A, and adds 0.6 kg to the assembly while contributing 1.06 ×10⁻⁴ kg·m² of additional inertia. When energized, the brake releases to allow the servo to deliver a continuous holding torque of 10.0 Nm at zero speed without losing position. Total rotor inertia is 16 ×10⁻⁴ kg·m², supporting rapid acceleration with limited overshoot. Even with the brake removed, the motor mass remains 12 kg, a value used for load calculation in gantry, packaging, and material-handling systems.