Bearings basic parameters:

D-bearing outside diameter, according to bearing loading, general guarantee bearing pad on average pressure PM = 1.5 ~ 3.5 MPa advisable, have uniform loading device bearing, PM = up to 6 ~7 MPa.

d-bearing inner diameter, the bearing outside diameter to internal  is D/d, generally D/d = 1.2 ~ 2.5 advisable. D/d decided the bearing width B.

B-bearing width, B = (D-d) / 2. Generally take wide longer than the B/L = 1 or so, two-way turns B/L = about 0.6.

Z-bearings wattage, influence bearing length L, generally take z = 6 ~ 12, no less than 3, up to 20 more. Too many wattage will reduce the loading capacity, but can reduce the oil temperature.

α-flare angle,α = 360 k/z, k = (0.7 ~ 0.85) is filling coefficient.

L-bearing length, L = k π (D + d) / 2 z, between watts ditch wide Lk = (1-k) π (D + d) / 2 z.

β-bush slope height, for bearing bush and shaft neck maximum clearance h1 and minimum clearance h2 difference, β = h1-h2.

β/h2- aspect ratio,is bearing design the main technical parameters, click on "calculation different aspect ratio, static properties" button is optimized, the optimal β/L = 1.2, generally take 1.2 ~ 2.0 is better.

 
H1, h2 respectively are the largest and smallest bearing the oil film thickness. H2 = hmin-minimum oil film thickness, according to ensure full fluid lubrication to determine the principle of surface roughness Ra big take great value, general hmin 2 Ra = 0.01 ~ 0.05 mm. To install manufacturing precision bearings suitable enlargement.
 



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