Load capacity of polymer bearings limited by compressive strength
Shaft diameter D
10
-3
m
Bearing length L
10
-3
m
Modulus of elasticity E
MPa
Radial bearing clearance dR
10
-3
m
Wall thickness s
10
-3
m
Max contact pressure p
max
MPa
Elastic indentation at the center of contact δ/s
%
semi contact axis b/R=2b/D
-
Angle of contact φ
deg.
Mean contact pressure p
m
= F/(2bB)
MPa
Average bearing pressure F/(LD)
MPa
Load capacity F
N
Stiffness F/δ
10
6
N/m
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