Product Description:

The SR-B5.0250.030-04.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. Its IM B5 flange mounting supports precise alignment on automated machinery used for position and velocity control. The motor is suitable for applications that require rapid acceleration, controlled deceleration, and repeatable stopping. A rotor-mounted resolver supplies angular feedback to the drive controller, allowing closed-loop regulation without an external encoder. The shaft measures 32 mm in diameter and 58 mm in length, providing a direct mechanical connection to a coupling or gearbox. An integrated holding brake secures the connected axis when operating power is removed.

The brake circuit operates from 24 VDC and draws 1.33 A. It provides 56 Nm of static holding torque, while its inertia is 30 × 10⁻⁴ kg·m². A torque constant of 1.44 Nm/A establishes the relationship between motor current and output torque, supporting accurate current regulation by the drive. During continuous operation, the motor reaches a rated speed of 3000 rpm. Resolver feedback remains available throughout the operating speed range for field-oriented motor control. The machine interface uses a 190 mm flange, which provides a stable mounting surface for compatible housings, brackets, or spacers. The flange-mounted arrangement keeps the motor housing securely positioned when torque and radial loading change during repeated motion cycles.

At startup or during a temporary stall, the motor can produce a locked-rotor torque of 23 Nm. The corresponding locked-rotor current is 16 A, indicating the short-term current demand placed on the connected drive. These values help characterize motor behavior when the shaft cannot rotate under an applied command. The drive bus can provide up to 670 V of DC-link voltage, leaving sufficient voltage headroom for motor operation at elevated speed. A rotor inertia of 83 × 10⁻⁴ kg·m² affects acceleration, deceleration, and load matching. The combination of rotor inertia, torque capability, and resolver feedback supports controlled motion in indexing tables, pick-and-place axes, packaging spindles, and other automated equipment. Appropriate drive settings can regulate current and speed while accounting for the inertia of the motor and connected load.