NSK has improved the
competitiveness of an OEM
manufacturer of concrete
head vibrators, by
providing a bearing
substitution and
lubrication programme
that is delivering
operating cost savings of
€306 pa on each vibrator,
plus improving operating
life and reducing maintenance
requirements, mainly for replacement
bearings.

The OEM manufacturer had
specified a deep groove ball bearing as
an integral part of the design of a new
type of electric poker for concrete
head vibrators. NSK replaced the oil
used in the application – which didn’t
have the required viscosity – for a
specific NSK oil and,
for the bearing used,
supplied a larger radial
internal Clearance (C4)
to allow greater
lubrication and
increased vibration
damping within the
bearing unit itself.

The series of four modified
bearings were tested and found to
exceed 1000 operating hours.