Proper Lubrication Adds "Horses" To Gear Power

The knowledge concerning the lubrication of open gearing for mining machinery has contained many unknowns and at its best has relied to a great degree on a "Rule of Thumb" procedure. It will be within the scope of this paper to explain what we have learned to date and what must be learned in the future. Action of Two Gears in Mesh Let us review some of the basic fundamentals concerning the action of two gears during mesh. Most of the gears we use are involute and may be spur, helical, or herringbone. The gear contact is a combination of rolling and sliding action.