Product Description:

The SR-A4.0230.030-10.000 is a synchronous servo motor produced by Bosch Rexroth Indramat for the SR Synchronous Servo Motors series. It serves as a rotary drive in automated handling stations, conveyors, and forming equipment, converting electrical power from a controlled DC link into precise angular displacement. Built-in resolver feedback keeps the control loop accurate under load disturbances, allowing dependable positioning in multi-axis industrial cells.

The controller supplies a DC bus of 670 V, and this high potential lets the motor reach rated torque with moderate current demand. A flange that measures 142 mm provides a standardized mounting interface for gearboxes or machine frames. During start-up or jam conditions, the windings can draw a locked-rotor current of 14 A and produce a stall torque of 22 Nm. These values are used to size the drive for overload protection. The motor has an IP 67 enclosure that resists dust ingress and temporary immersion, so the 25 kg assembly can be mounted close to wet processes. Its 341 mm overall length accommodates concentrated stator windings, and the torque constant is 1.57 Nm/A. A smooth shaft that is 50 mm long simplifies coupling to backlash-free clamping hubs.

Dynamic performance is anchored by a rated speed of 3000 rpm, which suits packaging lines that demand fast index cycles. The resolver delivers position data at 8,192 increments per revolution, enabling drive electronics to command small incremental moves without encoder jitter. A rotor inertia of 54 ×10^-4 kg·m² balances acceleration capability against load stability while remaining low enough for short settling times. The shaft journal has a diameter of 24 mm, which works with standard keyed or keyless couplings. This shaft format also maintains torsional rigidity during continuous power transmission.