Product Description:

The SR-A0.0004.060-14.000 is a compact synchronous servo motor engineered by Bosch Rexroth Indramat and assigned to the SR Synchronous Servo Motors series. The unit converts DC-link energy from a drive into precise rotary motion for positioning tables, small pick-and-place arms, and other automation axes that require fast speed regulation. Resolver feedback supplies rotor position data to the controller, allowing the system to maintain tight velocity control even during rapid acceleration. Its compact design also supports installation in automated equipment with limited space around the motion axis.

At a rated speed of 6000 rpm, the motor delivers continuous shaft rotation suited to high-cycle machines. The relationship between current and torque is represented by a constant of 0.62 Nm/A, allowing the drive to calculate output torque directly from the measured phase current. When the rotor is blocked, the motor develops 0.4 Nm of locked-rotor torque while the windings draw 0.65 A. These values support appropriate overload monitoring during operation. The rotor inertia is 0.09 × 10⁻⁴ kg·m², allowing quick speed transitions without destabilizing the axis. The square mounting interface uses a 55 mm flange pattern, simplifying attachment to miniature gear stages and compact machine frames.

The permanent-magnet holding brake secures the shaft with 1.0 Nm of static torque and operates from 24 VDC at 0.5 A. The servo drive’s intermediate circuit is rated at 670 VDC, matching the motor’s compact stator insulation system. Resolver accuracy is ±10 arcmin, and a resolution of 8,192 increments per revolution provides fine position granularity for sub-degree movements. A keyed shaft measuring 9 mm in diameter and 20 mm in length transmits power to the connected coupling. The motor has an overall length of 175 mm and a mass of 1.38 kg, reducing the mechanical load placed on small linear slides during frequent start-and-stop operation.