Product Description

The SD-B5.250.020-41.000 permanent-field servomotor by Bosch Rexroth is intended for use in industrial environments. The device is well-suited for stringent requirements due to the unique design of its shaft. The surface of the housing must not be touched when the device is in use as it usually becomes hot and the user may suffer burns upon touching it. There is temperature-related expansion at the driving end of the motor due to the presence of the fixed bearing at the driving end. The rotor position of the product is recognized using the commutation and tacho sensors.

The connectors of the SD motor have plastic protective caps, which are secured in place with aluminum securing rings. The device supports the use of straight and right-angled connectors. The unit delivers maintenance-free operation. Gear wheels, belt pulleys, and clutch disks can be incorporated on the motor’s shaft. The product is protected against thermal overload by the NTC thermistor positioned in the windings. The temperature monitoring is evaluated in the inverter. The device has a torque rating of 25 Nm. Its nominal speed is 2000 rpm.

The SD motor is cooled by natural convection and thermal radiation. The tacho and commutation sensors are located at the non-driving end of the motor. The user cannot operate the motor on a standalone basis. It should always be used with an inverter. Care should be exercised to ensure that fluid is not collected in the flange end plate of the device in the case of IM V3 mounting, as this can cause damage to the motor. The ball bearings of the device have a minimum service life of 20,000 hours of operation.