Product Description:

The SR-B5.0250.030-14.000 synchronous servo motor is produced by Bosch Rexroth Indramat for the SR Synchronous Servo Motors series. It delivers controlled rotary motion for industrial axes that require repeatable speed and accurate position feedback. The permanent-magnet rotor and resolver provide controlled motion and angular feedback, while the integrated holding brake maintains shaft position when power is removed. These features support positioning axes, handling systems, and other automated machinery with demanding motion profiles.

This model reaches a rated shaft speed of 3000 rpm, allowing the drive to match common machine cycle rates without mechanical gear reduction. The electromagnetic design provides a torque constant of 1.44 Nm/A, so the drive electronics can calculate output torque directly from the commanded current. When energized, the brake resists back-driving loads with 56 Nm of static torque, and it is powered by a 24 VDC control rail. The motor has a locked-rotor current of 16 Arms during startup. This current produces a stall torque of 23 Nm, helping the motor overcome static friction and begin accelerating the connected load. The electrical limits must be considered when selecting the compatible drive and protective devices.

The brake’s rotating parts contribute only 30 × 10^-4 kg·m² to system inertia, while the complete rotor and encoder assembly has an inertia of 83 × 10^-4 kg·m². This low inertia supports rapid speed changes without placing unnecessary demand on the drive. The motor tolerates impacts of up to 6 g, and its bearing set has a service life of 20,000 hours under the applicable operating conditions. A 190 mm square flange aligns the housing with compatible mounting patterns. The output shaft measures 32 mm in diameter and 58 mm in length, and it transmits torque through keyed couplings. Resolver feedback supplies reliable angular data in the presence of electrical noise and high ambient vibration.