Case Studies
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 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 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
$=USD

A new level of reliability delivered by Chesterton solutions.