Exceeds 1000h

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.