Lubrication – gears

As every engineer knows, the lubrication of vertical, horizontal, or very helical surfaces is troublesome because the lubricant drops to the lower edge of these surfaces, with the result that the upper part is not lubricated enough or not at all. In practice, this is usually solved by lubricating the surfaces regularly or permanently very abundant in which naturally a lot of lubricant gets lost. Generally and in particular at gears where the specific pressure on the teeth is very high, the difficulty consists in keeping constantly an oil or grease layer on the contact surfaces. The lubricating device is designed in order to apply regularly such a lubricating film on these surfaces. This adjacent figure clarifies the setup. Below you will find a table with usable gear greases depending on the type of application.

GEAR GREASES Fin Grease MP 2/3 Fin Grease MP 00 Fin Grease MP LS2 Fin Food Grease 2 Fin Food Grease 00 Fin Food Grease EP Fin Grease HTG Fin Grease AP Fin Assembly Grease
Legend:
E = Excellent
G = Good
A = Applicable
NA = Not applicable
Open gears G NA E A NA A A NA A
Closed gearboxes G E NA A E A A NA A
Automatic lubricating system G E NA NA E NA NA NA NA
Load high G A E G A E NA G A
Speed high G A NA A NA A A NA A
Speed low G A E A A A A G A
Adhesive G A E G A E A E G
Temperature high G A A A A A E NA G
Temperature low G G A A G A A NA G
Grease thickness (NLGI) G A A A A A A E A
Waterproof G A NA G A E A E A
Corrosion resistance G A NA G A G A G G
Food industry, occasional contact G NA NA E E E NA E NA
Food industry, no contact G G G E E E G E A
Resistance to base/alkali G A G A A E E G G
Resistance to acid G A G A A E E G G
Assembly of ring nuts G NA NA A NA NA E G E
Assembly of helix G NA NA A NA NA E G E