Flanged housing units for electric motors

The locating and non-locating rotor bearing support, lubricating system, seal and housing are precisely matched and delivered in a ready-to-fit unit. Schaeffler offers four series:

•  Grease-lubricated FERS and FERB series can be equipped with various bearing types depending on requirements and are suitable for both horizontal and vertical mounting positions. 

•  The FKC design was developed for heavy-duty horizontal machines and has a radial spherical roller bearing. This unit is lubricated with oil, and oil sump or recirculating oil lubrication can be implemented depending on requirements. 

•  The FKB design, which is intended for use in large vertical machines,has axial spherical roller bearings and a radial deep groove ball bearing. It can be used with either oil sump or recirculating oil lubrication. 

FAG flanged housing units with shaft diameters of 100mm and upwards are designed in such a way that they can be adjusted to fit customer-specific end shield and motor shaft interfaces. As an alternative to current-insulated bearings and hybrid bearings, the housing flange can be supplied with a current-insulating coating to provide protection against the passage of electrical current.

The SmartCheck was developed specifically as a condition monitoring system for electric motors, fans, pumps and similar rotating machines. It can be adapted to fit the FAG flanged housing units and detects irregularities such as incipient bearing damage and imbalance based on solid-borne vibrations. Furthermore, it can be used in combination with an additional control system to trigger lubricating pulses to a grease lubricator such as the Concept2 from Schaeffler. Both over-greasing and insufficient lubrication of rotor bearings that are lubricated with grease is therefore reliably prevented. This increases the operating life of the bearings and reduces both the likelihood of failure and the maintenance costs for the drive.