NSK has solved a recurring problem
that was causing downtime at a UK
refinery. The problem concerned a
centrifugal pump that was going
wrong on average three times a year.

A cylindrical roller bearing was
failing following the transition from
belt drive to direct drive on the
pump. NSK engineers concluded
that the change from belt to direct
drive had reduced the radial load on
the bearing, causing rollers to skid
on the bearing’s inner raceway.

NSK installed a lower friction
deep groove ball bearing and, since
then, there has not been a single
failure.