SR-A5.0250.030-14.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SR-A5.0250.030-14.000 is a synchronous servo motor from the SR Synchronous Servo Motors series. It has a flange size of 190 mm, a smooth shaft measuring 32 by 58 mm, and a protection rating of IP67. The motor features a rated speed of 3000 rpm, a locked-rotor torque of 23 Nm, and a brake torque of 56 Nm.
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Product Description:
The SR-A5.0250.030-14.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. It is intended for closed-loop industrial automation axes that require accurate rotary positioning and repeatable velocity control. Integrated resolver feedback sends position data to the drive, allowing coordinated motion with minimal following error. This feedback also supports precise regulation when the motor operates through repeated acceleration, deceleration, and positioning cycles.
This model reaches a rated speed of 3000 rpm, providing a balance between high throughput and manageable centrifugal forces. A torque constant of 1.44 Nm/A expresses the relationship between drive current and developed torque, simplifying current-loop tuning. When stalled, the motor can draw up to 16 A RMS; at that current, it develops a locked-rotor torque of 23 Nm for short-term holding or indexing tasks. The laminated steel stack is coupled to a rotor with an inertia of 83 × 10⁻⁴ kg·m², moderating acceleration peaks while maintaining dynamic response. Mechanical integration is provided by a square flange that measures 190 mm. The smooth shaft has a diameter of 32 mm and a length of 58 mm, allowing it to accept clamping or shrink-fit couplings. The motor has an overall length of 345 mm, and the resolver delivers 8,192 increments per revolution for fine position resolution.
An electromechanical holding brake applies 56 Nm of torque to secure vertical or suspended loads. The brake is released by a 24 VDC supply and draws 1.33 A from the control cabinet’s auxiliary power source. The housing is sealed to IP67, allowing installation on equipment exposed to washdown or airborne particulates without additional covers. The motor has a total mass of 29.2 kg, so inertia matching and support structure sizing must account for its weight. Bearings support the rotor at the rated speed and help maintain stable shaft alignment during extended operating cycles. The sealed resolver cavity protects the feedback components from moisture and particles that could otherwise affect position accuracy.
