Product Description:

The SR-A0.0009.060-00.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat as part of the SR Synchronous Servo Motors series. Intended for closed-loop control of compact rotary axes, the unit delivers commanded motion to indexing stations, miniature conveyors, and light pick-and-place drives found in automated production cells. Direct resolver feedback allows the associated servo amplifier to monitor shaft position continuously, keeping position error small during the rapid acceleration and deceleration sequences required by modern assembly machinery.

A square mounting interface of 55 mm forms the motor flange and allows it to be bolted to standardized gearheads or machine plates without adapters. Its rated shaft speed reaches 6000 rpm, providing ample velocity range before mechanical limits are approached. The electromagnetic design produces torque in proportion to current with a constant of 0.73 Nm/A, simplifying current-loop tuning for predictable load response. Resolver electronics deliver 8192 increments per revolution of interpolated position data, allowing the drive to command fine movements even at high speed. Except for the output face, the housing meets the IP67 sealing class, permitting use in washdown or dust-laden environments when the lead exit and mating connectors are tightened correctly. Two integrated NTC sensors send winding temperature data to the controller so thermal derating can begin before insulation limits are exceeded.

At stall, the motor produces 0.95 Nm of torque while drawing only 1.3 A, allowing safe indexing without an external brake during brief holding periods. System mass is minimized by an overall weight of 1.6 kg, reducing moving inertia when the motor is mounted to linear slides or lightweight end effectors. Internal rotor inertia remains low at 0.25 × 10⁻⁴ kg·m², enabling fast directional changes without excessive overshoot. A maximum body length of 171 mm keeps the package short for installations with restricted axial clearance. The keyed shaft measures 9 mm in diameter and 20 mm in length, providing positive torque transmission to pulleys or couplings. Encoder accuracy remains within ±10 angular minutes to support precise shaft alignment and repeatable positioning throughout rapid motion cycles.