Flange-Mount Ball Bearing Units FAQS

QWhat's the classification of the angular contact ball bearings ?

AThe most commonly used designs are: single row angular contact ball bearings double row angular contact ball bearings four-point contact ball bearings

QWhat's the Insert bearing designs of bearing units ?

AUnits compliant with North American standards are available with a number of insert bearing designs: Set screw locking Wide inner ring bearings with seals and flingers (suffix TF) Sealed narrow inner ring bearings (suffix RM) Eccentric locking collar Wide inner ring bearings with seals and flingers (suffix WF) Sealed narrow inner ring bearings (suffix FM) SKF ConCentra locking Wide inner ring bearings with seals and flingers (suffix LF) SKF ConCentra locking provides reduced vibration and reduced shaft damage.

QWhat's the grease life for insert bearings?

Ais presented as L10, i.e. the time period at the end of which 90% of the bearings are still reliably lubricated. depends on the load, operating temperature and the ndm value The indicated grease life is valid for the following combination of operating conditions: horizontal shaft very light to moderate loads (P ≤ 0,05 C) stationary machine low vibration levels Where the operating conditions vary, the grease life obtained from the diagrams should be adjusted as follows: vertical shafts → 50% of the obtained value heavier loads (P > 0,05 C) → apply reduction factor The values for adjusting the grease life are estimates. Vibration can have a negative influence on grease life. The extent cannot be quantified, and the influence increases with increasing operating temperature.

QWhat's the permissible operating temperature for spherical roller thrust bearings can be limited ?

Athe dimensional stability of the bearing washers the lubricant Where temperatures outside the permissible range are expected. Bearing washers The washers of SKF spherical roller thrust bearings are heat stabilized up to 200 °C (390 °F). Lubricants For temperature limits of SKF greases, refer to Selecting a suitable SKF grease. When using lubricants not supplied by SKF, temperature limits should be evaluated according to the SKF traffic light concept.