Case Example from 2022 - Wear

Problem with stern tube: 

German container ship reports:

A lot of white steel found in drained oil. Steel flakes around 10 x 10 mm (picture below). Also increased temperature. 

The oil in use is a mineral oil

Total system volume around 300 ltr

ABCON solution:

This suggest metal friction.

We advised to add 25 liters ABCON MARINE STERN TUBE+ with special hard teflon to reduce metal wear.

Status from customer:

“After adding ABCON MARINE-STERN TUBE+, oil temperature was reduced 10 degree.”

ABCON comment: The metal flakes indicates asperity contact leading to excessive  wear. After adding ABCON STERN TUBE+, containing hard Teflon particles, the temperature reduction of 10 degrees  proves that there is no longer asperity contact at stern tube liner and shaft.