Product Description:

The SR-A4.0230.060-14.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the SR Synchronous Servo Motors series. It is intended for industrial automation axes that require repeatable positioning and high cycle rates. In servo applications, the motor converts controlled electrical input into precise rotary motion for coordinated machine movement. A resolver provides rotor angle feedback for closed-loop operation, and the integrated brake helps hold the axis when power is removed. The mounting interface uses a 142 mm flange, which supports direct attachment to compatible machine structures.

The shaft measures 24 mm in diameter and 50 mm in length for connection to gearboxes, pulleys, or similar transmission components. Under continuous excitation, the rotor can reach a rated speed of 6000 rpm, and the electromagnetic design has a torque constant of 0.88 Nm/A, so current commands produce a predictable torque response. Resolver feedback is processed at 8192 increments per revolution, which supports fine speed regulation and stable position control during motion. During a locked-rotor test, the winding produces 22 Nm of static torque while drawing 25 Arms. This combination of speed capability, feedback resolution, and torque response suits axes that must accelerate quickly without losing control accuracy.

The holding system supplies up to 18 Nm and operates from a 24 VDC control bus that is isolated from the main inverter lines. Dynamic response is influenced by a rotor inertia of 54 × 10⁻⁴ kg·m², while the brake adds 3.1 × 10⁻⁴ kg·m² of inertia and 1.04 kg of mass. The overall motor length is 388 mm, which provides space for the winding and brake assembly within the housing. Total assembly weight is 23.7 kg, an important value when the motor is mounted on moving carriages, vertical axes, or other structures with load limits. These physical values help characterize how the motor will behave in applications that depend on controlled acceleration, reliable holding force, and stable mechanical integration.