Product Description:

The SR-A5.0460.020-00.060 is a synchronous servo motor built by Bosch Rexroth Indramat for the SR Synchronous Servo Motors series. The unit converts three-phase drive current into precisely regulated mechanical shaft rotation, allowing CNC tables, packaging axes, and indexing mechanisms to follow commanded motion profiles with high accuracy. It integrates a resolver for real-time rotor position feedback so the connected drive controller can maintain tight velocity and position control loops during demanding industrial automation tasks.

Its mounting interface uses a flange that measures 190 mm across, giving the frame the correct register for direct attachment to gearboxes or machine beds. A torque constant of 2.2 Nm/A links drive current to delivered torque, allowing the required inverter output to be calculated for the intended load. The motor sustains a rated mechanical speed of 2000 rpm, supporting controlled motion across a broad operating range. Its locked-rotor torque reaches 46 Nm, providing substantial torque for rapid acceleration under load. Rotor position is digitized at 8192 increments per revolution, providing fine electrical commutation steps that minimize torque ripple during slow movements.

The rotating assembly, including the resolver, has an inertia of 166 × 10⁻⁴ kg·m², balancing dynamic response with load stability. During startup, the windings can draw up to 21 A RMS of locked-rotor current, so the upstream drive and protective devices must accommodate this demand. The motor has an overall mass of 35 kg, while its 383 mm housing length distributes that weight along the mounting surface. The shaft measures 32 × 58 mm and uses an A10 × 8 × 50 feather key for positive torque transfer to a coupling or driven mechanism. Resolver tracking error remains within ±10 angular minutes, supporting precise closed-loop positioning in multi-axis machines.