Desirable characteristics in gear and transmission lubricants

A number of characteristics, which were not evident in the discussion of functions of gear lubricants, contribute to satisfactory application of such products. After listing some of these qualities, consideration will be given as to what contributes to such characteristics. Such qualities include:

(a)    Adhesion

(b)   Compatibility

(c)    Freedomfrom separation

(d)   Minimumaction on other components of mechanisms, as seals, etc

(e)   Oiliness

(f)     Oxidation  stability

(g)    Satisfactory demulsibility

(h)   Satisfactory detergency

(i)    Satisfactory foam inhibition

(j)    Satisfactory viscosity temperature characteristics

(k)      Shear stability

(l)   Reasonable cost.