Product Description:

The SR-A4.0230.030-14.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the SR Synchronous Servo Motors series. It serves as a drive element in automated machinery that needs precise velocity and position regulation, such as pick-and-place modules, form-fill-seal stations, and small palletizers. By delivering closed-loop torque to a coupled load, the motor can replace pneumatic cylinders and stepper stages where higher dynamic response and continuous operation are required.

The motor reaches a rated speed of 3000 rpm, and its electromagnetic design provides a torque constant of 1.57 Nm/A, so each ampere of phase current produces predictable output torque. A normally engaged holding brake is included, and it releases when 24 V DC is applied while drawing 0.7 A during operation. The brake can hold up to 18 Nm, preventing vertical axes from slipping when power is removed. During startup, the windings can accept a locked-rotor current of 14 A to overcome static friction. Mechanical mounting is provided by a 142 mm square flange, and the built-in resolver supplies real-time shaft-angle feedback. The brake adds 0.00031 kg·m² of inertia to the system. It weighs 1.04 kg, keeping the overall motor mass moderate for gantry or rotary-table applications.

When the rotor is stalled, the electromagnetic assembly can deliver up to 22 Nm of static torque, giving the drive additional capacity for indexing moves or rapid load reversals. Position data are resolved at 8192 increments per revolution, allowing fine interpolation within the controller. Dynamic behavior is influenced by a composite rotor inertia of 0.0054 kg·m², which balances quick acceleration with stable operation at a constant speed. Power is transmitted through a shaft measuring 24 mm in diameter and 50 mm in length, permitting direct connection through standard keyway hubs or precision bellows couplings without additional adapters.