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Digester Agitator

Challenge

Background

An Eimix® mechanical sludge mixer for a wastewater treatment plant had repeated bearing failure due to poor bearing sealing, water contamination of the bearing housing, and subsequent grease washout.

Goal: Avoid costs for a total rebuild

Equipment rental (crane):  $ 3,000
4 men x 10 days:  $20,000
Shaft and bearings:  $ 6,000
Current Cost:  $29,000

Greasing hard to seal shaft

Greasing hard to seal shaft bearings was unreliable. Annual failure was expensive.

 

Solution

Product

Chesterton® 30KC Greased Seal Cartridge with Chesterton® 615 High-Temperature Grease (HTG) and Lubri-CupTM EM; ARC industrial coating on propeller.

  • Bearing isolation accomplished by injecting the Chesterton® 30KC with water-and corrosion-proof Chesterton® QBT grease.
  • The Chesterton® Lubri-CupTM EM automatic dispenser delivers precise amounts of grease 6X/day.
  • Water and grit is continuously purged from the bearing housing.
Chesterton Lubri-CupTM

Chesterton Lubri-CupTM EM and 615 HTG installed.

 

Results

  • 300% longer bearing life
  • Longer service life for the mixer
  • Longer time between removal and installation of mixers—no safety issues
  • Bearing isolation accomplished by injecting the Chesterton® 30KC with water-and corrosion-proof Chesterton® QBT grease.
  • The Chesterton® Lubri-CupTM EM automatic dispenser delivers precise amounts of grease 6X/day.
  • Water and grit is continuously purged from the bearing housing.
  • Long-term savings

Cost Breakdown
Avoidance of rebuild cost: -$30,000
Chesterton lubrication/coatings: $ 2,750
Annual Savings: $27,250

Eimix® is a registered trademark of Ovivo
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Chesterton solutions

A new level of reliability delivered by Chesterton solutions.

 

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