Product Description

The Bosch Rexroth SD-B5.250.030.10.000 permanent-field servomotor is designed for inverter operation. The motor supports electronic commutation. The rotor of the device has permanent magnets made of ferrite. The unit is equipped with brushless tacho and commutation sensors. These sensors are integrated for rotor position detection and velocity feedback. The product is an essential component of the manufacturer’s Servodyn drive concept. It should be noted that the motor must be operated only with a compatible inverter. If not, it results in reduced output and can damage the motor. The device can be used for a range of electrical and mechanical-related applications in industries.

The SD motor has a type label attached to its housing. The ambient operating temperature of the product is 0 to 40°C. The motor has ball bearings at its flange end. 20,000 hours is the minimum service life of these ball bearings. The product must not be dismantled by the user for repair, cleaning, or maintenance. Only the manufacturer is allowed to dismantle the device. The current rating of the device in standstill mode is 22.5 A. The unit’s peak current at 20°C is 67.5 A. The motor has a torque constant of 1.11 Nm/A. The device is 489 mm long, and it weighs 58.6 kg.

Sufficient heat dissipation by natural convection and thermal radiation should be ensured when installing the SD motor. The surface of the motor may be too hot when it is live. So, if necessary, a touch guard must be provided. Drive elements like clutch disks should be fitted and removed using an appropriate mounting and extraction device. The shaft extension of the motor must never be knocked or hammered as this might damage the rotor and the ball bearings.