Product Description:

The SR-A5.0460.020-10.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. Designed for closed-loop motion axes, it converts drive current into precise rotary output for positioning tables, pick-and-place heads, or packaging spindles. Its resolver feedback supports real-time velocity and position control, allowing automation drives to synchronize multiple axes while maintaining torque accuracy across dynamic load changes.

The motor mounts in machines using an IM B5 construction, so its face flange aligns directly with gearboxes or end plates that share a 190 mm pilot diameter. At its rated operating point, it reaches 2000 rpm, a speed produced by the winding design and magnetic pole count. During startup, the rotor can develop 46 Nm of locked-rotor torque while drawing 21 A, providing the information needed to select suitable fuses and drives. Continuous torque production per phase current is characterized by a constant of 2.2 Nm/A, expressing the proportional relationship between armature current and mechanical output. Dynamic behavior is influenced by a rotor inertia of 166 × 10⁻⁴ kg·m²; this moderately high inertia smooths velocity ripple but requires additional energy for rapid acceleration.

The motor has an overall mass of 35 kg, so gantry arms and mounting brackets must accommodate its static load while minimizing overhung moments on the bearings. The active magnetic stack extends to 383 mm in length, allowing the windings to sustain continuous operation without overheating when the specified 4 × 4.0 mm² motor cable is used. A maximum acoustic emission of 58 dB(A) supports installation near operators without requiring additional acoustic panels. The smooth shaft measures 32 × 58 mm and mates with clamp couplings for secure torque transmission. Face-mounting holes on the flange simplify alignment within tightly packed automation frames and provide direct attachment to compatible machine surfaces.