SR-A3.0068.030-14.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SR-A3.0068.030-14.000 is part of the SR Synchronous Servo Motors series and features a flange size of 116 mm and a shaft measuring 19 mm in diameter by 40 mm in length. This servo motor is equipped with a resolver feedback device offering a resolution of 8192 increments per revolution and has a rated speed of 3000 min-1. It provides a holding brake torque of 10.0 Nm, a torque constant of 1.36 Nm/A, and has a mass of 9.6 kg with brake included.
Internal Product Review
The SR-A3.0068.030-14.000 is a Bosch Rexroth Indramat synchronous servo motor with resolver feedback and a 3000 min-1 rated speed. Resolver precision of ±10 angular min and 8192 incr/rev resolution support accurate commutation and stable positioning in servo applications. A 10.0 Nm holding brake with 24 VDC supply adds dependable axis retention for controlled static or vertical loads.
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Product Description:
The SR-A3.0068.030-14.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. It converts regulated drive current into rotary motion for precise position and speed tasks in automated assembly lines, material-handling gantries, and indexing tables. Resolver feedback sends real-time rotor position signals to the drive controller, which supports synchronized motion during starts, stops, and speed changes. This arrangement is suited to closed-loop axes that need repeatable cycle timing and stable speed regulation.
During continuous operation, the rotor can spin at 3000 rpm, which suits many mid-range servo amplifiers without requiring gearbox multiplication. Torque rises in proportion to current, and the constant of 1.36 Nm/A gives a direct relationship between current demand and produced torque. This makes motor response easier to predict when the drive regulates current as the primary torque command. Under stall conditions, a locked-rotor current of 5.0 A produces a breakaway torque of 6.8 Nm, helping the axis start from rest without hesitation. The motor uses an ISO square flange with a face dimension of 116 mm and a 19 x 40 mm keyed shaft, while total reflected inertia, including the resolver, is 11 x 10⁻⁴ kg·m².
The integrated spring-applied brake secures the load with 10.0 Nm of static torque when power is removed. It is released by 24 VDC and draws 0.66 A during operation, so the brake can be controlled from common machine power circuits. Brake hardware adds 1.06 x 10⁻⁴ kg·m² of inertia, bringing the assembled length to 294 mm, and the shipping mass is 9.6 kg. The resolver provides 8192 increments per revolution with ±10 angular minutes of precision, giving the controller smooth velocity feedback and accurate rotor position information across the operating range.
