Continued from page 8
Combining those three components in a way to fit all mechanical elements and applications in an optimal way would most likely increase the number of greases used to a number too large to handle. Compromises are a must, but what to trade off?
• So how should you choose the right grease? The application is a great idea to start with: ball bearings, roller bearings and journal bearings all have their different requirements.
• The operating conditions: Is it cold, hot or maybe both along with speed regimes slow or fast or varying between the two, may give you a good lead on what type of oil and of what viscosity you should use.
• Why are you lubricating? If it is to keep dirt out of the way as a seal, perhaps a cheaper option could be a good choice.
• Looking at the application itself, how is it lubricated? Manually or with a central lubrication system? This may tell you something about which thickener you should use.
• Are there any regulations in place? OEM Specifications, HSSE regulations to consider this may also have an effect on how to choose your weapon in the fight against friction.
A very good tool to have handy when evaluating the existing situation is an infrared thermometer. All heat except any induced heat or the surrounding temperature is a result of friction, very many times from a too high a base oil viscosity. So check your temperature and your Product Data Sheet before you ask for a high temperature grease, the thing you need may be a lower base oil viscosity.
Andreas Lindström Account Manager, Axel Christiernsson
Our next Lubrisense™ White Paper will be about mining, stay posted on
www.axelch.com
LINK
www.axelch.com/news-media/downloads
10
LUBE MAGAZINE NO.132 APRIL 2016
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