Product Description:

The SR-A2.0020.060-00.015 is a synchronous servo motor manufactured by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. This compact rotary actuator is built for closed-loop positioning and velocity control in industrial automation tasks such as packaging axes and pick-and-place gantries. With its dense electromagnetic design, the motor converts commanded current into repeatable torque that can be precisely modulated by a matching drive controller. It is well suited for compact axes that require stable low-speed control, quick response, and repeatable indexing under changing loads.

The motor is sized for drive systems that operate on a 670 V DC link, allowing the inverter to deliver startup power without saturation. During startup, the stator can absorb a locked-rotor current of 2.7 Arms, producing a stall torque of 2.0 Nm that holds the load until motion begins. The mechanical end thrust limit is 70 N, so linear couplings or belts must be tensioned below this value to help protect the bearing set. Plug braking is supported with a minimum permitted brake energy of 785 Ws, giving the drive enough capacity to dissipate kinetic energy during dynamic stops. This combination supports short acceleration events while keeping motor loading within the range expected by the inverter stage.

Power is routed through a 4 × 1.5 mm² motor cable that mates with the standard 6-pin connector, and plug braking uses a 1.0 Ω resistor. The housing has an IP 67 rating except at the shaft end, so it can be used in wash-down areas when the output side is shielded. Rated speed reaches 6000 rpm, and position feedback is provided by a resolver with ±10 angular minutes of accuracy and 8192 increments per revolution. The feedback signal lets the drive track rotor position continuously, while two NTC sensors report winding temperature during sustained duty. A keyway shaft with a feather key secures torque transfer to pulleys or couplings without slip.