SR-A4.0230.030-10.030 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SR-A4.0230.030-10.030 is part of the SR Synchronous Servo Motors series and has a flange size of 142 mm with an IP67 protection rating. This servo motor features a rated speed of 3000 rpm, locked-rotor torque of 22 Nm, and a locked-rotor current of 14 Amps. It uses a resolver encoder with a resolution of 8192 increments per revolution and delivers a torque constant of 1.57 Nm/A.
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Product Description:
The SR-A4.0230.030-10.030 is a synchronous servo motor manufactured by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. The unit converts electrical power into tightly regulated mechanical motion, making it suitable for positioning or velocity control on packaging machines, pick-and-place axes, and other automated equipment that requires repeatable dynamic performance. As a rotary actuator, it pairs with Indramat drives to create closed-loop systems that move loads with high accuracy. This arrangement allows the drive to monitor feedback and adjust motor current as operating conditions change.
This motor reaches a rated speed of 3000 rpm, allowing fast cycle times while remaining within its thermal limits. During startup or abrupt stops, it can generate a locked-rotor torque of 22 Nm from a locked-rotor current of 14 A supplied by the drive. The electromagnetic design provides a torque constant of 1.57 Nm/A, allowing output torque to be calculated from the commanded current. A rotor inertia of 54 × 10⁻⁴ kg·m² balances load responsiveness with stability, reducing overshoot in high-gain control loops. The housing is rated at IP67, protecting the stator against dust ingress and temporary immersion. A resolver supplies position feedback with an angular accuracy of ±10 arcminutes. The shaft measures 24 mm in diameter and 50 mm in length, making it suitable for standard couplings. The motor produces an acoustic emission of 58 dB(A) during operation.
The motor has a square flange measuring 142 mm, simplifying attachment to gearboxes or frames drilled to compatible patterns. The resolver signal is interpolated to an encoder resolution of 8192 increments per revolution, enabling fine position adjustments in servo loops. The thrust bearings withstand an admissible axial force of 154 N, allowing vertically oriented loads to be supported without external preload devices. The motor can withstand shock loads up to 6 g during operation. Its laminated rotor limits unnecessary rotating mass while supporting responsive acceleration and controlled deceleration. The sealed housing also helps prevent contaminants from reaching the internal feedback and bearing components in demanding industrial installations.
