Product Description:

The SR-A5.0700.020-00.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. It is intended for closed-loop motion axes in industrial automation, where precise speed and position control are needed to index tooling, conveyors, or process equipment. The motor converts commanded current into controlled rotary motion for axes that must start, stop, and reposition with repeatable accuracy. When paired with a compatible drive, it supports steady speed regulation and precise position correction during changing load conditions.

The motor’s rated speed reaches 2000 rpm, allowing the drive to maintain continuous shaft velocity without derating. A torque constant of 2.0 Nm/A relates drive current to mechanical output and supports predictable response. At stall, it can develop up to 69 Nm of locked-rotor torque while drawing 34 A of locked-rotor current, which is useful when sizing protective devices and selecting gear ratios for static loads. Position feedback comes from a resolver with 8192 increments per revolution and a feedback accuracy of ±10 angular minutes, allowing the control loop to detect small positional errors during interpolation. The 190 mm flange follows the IM B5 mounting pattern, so the unit can bolt directly to rigid machine plates without alignment shims.

The motor housing weighs 50 kg, which affects handling and axis mass during installation. Total rotational inertia, including the encoder, is 257 × 10⁻⁴ kg·m², so rapid acceleration requires proportionally higher drive power. A square flange side of 190 mm and an overall length of 483 mm set the mechanical envelope required inside the machine frame. The hardened steel shaft measures Ø32 × 58 mm and uses a keyway with an A10 × 8 × 50 feather key for positive coupling to pulleys or couplings. Connections route through the B5 front face, and the IM B5 orientation keeps the resolver cable clear of adjacent hardware.