Sliding bearing design and calculation methods of non liquid

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With grease, oiling bearings, due to lack of sufficient amount of oil in the relative motion between the surfaces is difficult to produce a complete bearing oil film bearings can only work in the state of mixed friction, non-liquid plain bearings. The main fail ure mode is kind of bearing wear and glued surface crushing and pitting. Therefore, the criteria for calculation of the bearing, maintenance bearing materials, control and boundary film bearing the average pressure p and sliding velocity v, and the product of pv, respectively, does not exceed the allowable value, namely:sealed bearings
p ≤ [p]; v ≤ [v]; pv ≤ [pv]

Where: [p], [v] and [pv] allowable value
For radial bearings: p = F / (BD); v = πdn
The formula: F-bearing load;-bearing width B; d-axis diameter diameter; n-shaft speed.slim bearings
For thrust bearings:
p = F / {(π / 4) (d2-d02) ξ}; v = π {(d + d0) / 2} n
Wherein: d and the d0-ring contact surface of the outer and inner diameters, usually D0 = (0.6 to 0.8) days; consideration by the ξ-coefficient decreases the contact area due to th e opening of the oil groove, usually ξ is = 0.8 to 0.9.