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Introduction

An international drinks producer had repeated problems with mounted-unit inserts failing prematurely. Cleaning the equipment with water and chemicals was destroying the bearing seals and washing out the grease pack. As a result, the mounted-unit inserts had to be replaced every 5 to 6 months and re-greased every 3 weeks. NSK was asked to find a solution to this problem in order to improve the service life.

Key Facts

  • Drive/conveyor system (sorting plant)
  • Premature failure of a competitor’s mounted-unit inserts
  • Frequent relubrication
  • Service life only 5 to 6 months
  • NSK’s solution: replacing the mounted-unit inserts with NSK’s Molded Oil mounted-unit inserts
  • No bearing failures in the first year
  • No additional regreasing
  • Conveyor drive
  • Molded Oil mounted unit insert

Value Proposals

  • Failed bearing investigation showed the seals to be destroyed by the washing process resulting in wash out of the grease pack
  • Doubling the service life after supplying successful samples
  • 100% reduction in servicing intervals (bearings previously lubricated 17 times a year)
  • Ordering and fitting another 12 Molded Oil mounted-unit inserts

Product Features

  • Molded-Oil inserts (with solid lubricant)
  • Ideal for remote applications
  • Martensitic stainless steel
  • Integral Flinger seal and Nitrile rubber seals
  • Bore size 20mm – 40mm
  • Corrosion resistance
  • Resistant to contamination increasing operating life
  • No need for re-lubrication

Cost Saving Breakdown

Before Cost p.a. NSK Solution Cost p.a.
Relubrication €4.080 No relubrication €0
Replacement & modification €1.000 No modification necessary €0
Total Costs €5.080 €0

Reference:SS-E-1014

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