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Introduction

A customer in the QM industry was experiencing premature failure of cylindrical roller bearings used on vibration units for a block vibrator machine every 2-3 Months. The bearings run in a very harsh environment exposed to contaminants, heavy vibration and shock loads. The impact was increased maintenance and costly downtime. NSK proposed Spherical Roller Bearings VS series and supervised the fitting of the bearings – which outperformed over 12 months, reducing maintenance and associated downtime.

Vibrating Screen
  • Vibrating Screen
Spherical Roller Bearings - Long-life Vibrating Screen
  • Spherical Roller Bearing - Vibrating Screen Series

Key Facts

  • Block vibrator machine
  • Frequent bearing failure due to vibration
  • NSK recommend vibratory specification spherical roller bearings
  • Bearing life vastly improved
  • Significant reduction in maintenance and lost production costs

Value Proposals

  • NSK performed an on-site Application Review as part of the AIP process
  • NSK recommend the installation Spherical Roller Bearings - VS series
  • Significant improvement demonstrated

Product Features

  • Spherical Roller Bearings - VS series are manufactured from ultra clean steel for optimal fatigue resistance and long life
  • Precision machined tough one piece brass cage, contoured roller pockets
  • Improved surface roughness on rollers & inner & outer ring
  • Special heat treatment rollers, prevent cracks from vibrations & shock loads
  • Internal radial clearance set at 2/3 ISO standard bearings
  • Outer dimensions set at 1/2 of ISO standard bearings
Cost Saving Breakdown
Before Cost p.a. NSK Solution Cost p.a.
Bearing Costs € 9 239 Bearing Costs € 2 310
Engineering Costs € 1 065 Engineering Costs € 118
Costs of lost production € 56 798 Costs of lost production € 0
Other Costs: Shaft Inspection € 10 236 Other Costs € 177
Total Costs € 77 338 € 2 606

Reference:SS-E-2-907