Product Description:

The SR-A2.0026.060-04.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat and assigned to the SR Synchronous Servo Motors series. It serves as a compact rotary actuator for automated material handling, small transfer stations, and high-speed tooling where accurate position and velocity control are required. When paired with a compatible drive controller, the motor converts commanded current into repeatable shaft movement for coordinated multi-axis motion in industrial equipment. This role suits machines that need short cycle times, consistent tracking, and dependable response during frequent starts and stops.

Its rated speed reaches 6000 rpm, providing headroom for fast indexing cycles and rapid axis repositioning. A torque constant of 0.78 Nm/A lets the drive relate phase current to torque output, while locked-rotor operation draws 3.5 A to produce 2.7 Nm with the shaft blocked. Resolver feedback provides 8192 increments per revolution, allowing fine interpolation for accurate motion control. The feedback signal also supports smooth regulation across both low-speed and high-speed operation. Rotor inertia is only 4 × 10⁻⁴ kg·m², which supports quick acceleration and deceleration. The motor has an overall length of 229 mm, a Ø14 × 30 mm shaft, an A5 × 5 × 25 feather key, and a Ø95 j6 pilot diameter for centered mounting to machine plates or gearheads.

The integrated holding brake provides 3.2 Nm of static torque and is released when the coil receives 24 V. Release current is 0.56 A, which helps limit heat during dwell periods. With a mass of 6.5 kg, the motor remains light enough for overhead gantries while still offering useful thermal mass for short-duty bursts. The brake helps hold the axis at standstill when motor power is removed. It is also useful where suspended or vertical loads must remain in position between motion commands. This supports stable stopping behavior before the drive re-energizes the motor phases.