SR-A3.0042.030-14.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SR-A3.0042.030-14.000 is part of the SR Synchronous Servo Motors series and has a flange size of 116 millimeters with a shaft size of 19 by 40 millimeters. It features a holding torque of 10.0 Newton-meters, a rated speed of 3000 revolutions per minute, and a resolver encoder with 8192 increments per revolution. The servo motor weighs 7.6 kilograms including the brake and operates at a DC link voltage of 670 volts.
Internal Product Review
The SR-A3.0042.030-14.000 is a synchronous servo motor with a resolver encoder and a rated speed of 3000 min^-1. The 24 V brake draws 0.66 A, providing a well-matched holding arrangement for controlled stopping and secure axis retention. A 3.7 Nm locked-rotor torque supports confident startup behavior, making this unit a strong fit for precise servo applications.
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Product Description:
The SR-A3.0042.030-14.000 is a synchronous servo motor produced by Bosch Rexroth Indramat as part of the SR Synchronous Servo Motors series. It converts drive current into controlled rotary motion for positioning tasks in industrial automation systems. Accurate velocity and torque regulation support motion axes used in pick-and-place arms, gantries, and packaging stations. The synchronous design allows the paired drive to regulate movement precisely as speed and load conditions change.
The motor includes an electromagnetic brake that operates at 24 V while drawing only 0.66 A. The brake keeps vertical loads stationary when drive power is removed. The motor operates from a DC link rated at 670 V, matching the output of compatible Rexroth multi-axis inverters. A square mounting interface with a 116 mm flange centers the stator on gearboxes or machine plates, while the 19 × 40 mm shaft supports direct coupling. Static load retention is provided by a holding torque of 10.0 Nm, reducing the need for a separate clamping device during dwell periods. The resolver encoder supplies analog sine-cosine feedback, and the resolver and brake contribute to an overall motor length of 262 mm. At locked rotor, 2.3 A of current produces 3.7 Nm of torque, providing useful starting characteristics for drive selection.
Total moving inertia, including the resolver, is 7 × 10⁻⁴ kg·m², permitting rapid speed changes without excessive drive effort. During continuous operation, the rotor can reach 3000 rpm. The winding constant of 1.6 Nm/A relates commanded current to developed torque for closed-loop control. A mass of 7.6 kg reduces the load placed on linear carriages and makes the motor easier to position during installation. The resolver provides 8,192 increments per revolution, allowing smooth position interpolation at high speeds. Its compact overall dimensions help the motor fit in restricted machine spaces while retaining the brake, resolver, and direct-coupling shaft.
