SF-A3.0093.030-04.00 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SF-A3.0093.030-04.00 is part of the SF Servo Motors series and has a rated speed of 3000 revolutions per minute. The motor features a STG Absolute encoder with a resolution of 8 million increments per revolution, and provides a brake holding torque of 10.0 Nm at 24 VDC. It has a flange size of 116 mm and weighs 11.6 kilograms.
Internal Product Review
The SF-A3.0093.030-04.00 is a Bosch Rexroth Indramat SF servo motor with a 3000 min⁻1 rated speed and an STG Absolute encoder. Encoder feedback at 8 Million incr./rev. and a 10.0 Nm holding brake support precise positioning and secure axis retention. A 1.35 Nm/A torque constant gives the unit efficient torque production for demanding motion applications.
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Product Description:
The SF-A3.0093.030-04.00 belongs to the SF Servo Motors series produced by Bosch Rexroth Indramat. It is an electromechanical drive component intended for industrial automation axes that require closed-loop speed and position control. Integrated with servo amplifiers, the unit converts controlled electrical power into rotary motion so machine tools, packaging stations, and handling modules can follow commanded paths with high repeatability. This type of motor is suited for applications that need steady response during indexing, positioning, and regulated speed changes under varying load conditions.
The motor includes a permanent-magnet holding brake that secures loads with 10.0 Nm of torque when power is removed. The brake coil is energized from a 24 VDC source and draws 0.66 A during engagement. When the shaft is intentionally stalled, it can sustain a locked-rotor torque of 8.1 Nm while the winding momentarily accepts a 6.0 A current spike. Position feedback is delivered by an STG absolute encoder that provides 8 million increments per revolution, giving motion controllers fine angular resolution for precise axis correction. Mechanical coupling to gearboxes or pulleys uses a square mounting interface with a 116 mm flange, which supports accurate alignment during installation.
During continuous operation, the rotor can reach 3000 rpm, and each ampere supplied to the stator produces approximately 1.35 Nm/A of torque. Dynamic response is aided by a rotor inertia of 16 × 10⁻⁴ kgm², which helps balance acceleration capability with stable running behavior. The assembly weighs 11.6 kg, and the housing length is 326 mm, so the motor fits medium-size axis arrangements without requiring an oversized support structure. Power is transmitted through a 19 mm by 40 mm shaft machined with a keyway. An A6×6×32 feather key is supplied to match this shaft, allowing secure coupling to pulleys or gear inputs while maintaining consistent torque transfer during repeated motion cycles.
