Dynamic pressure thrust sliding bearing parameters
Dynamic pressure thrust sliding bearing parameters
Dynamic pressure thrust sliding bearing parameters  Abstract: Bearing the basic parameters of bearing bore diameter bearing outside diameter of the bearing loads to determine the general guarantee The tile average pressure pm1.53.5MPa of contained device bearing pmMPa bearing inner diameter of the bearing outer diameter inside and outside the general 1.22.5 decision bearing width of the bearing width is generally about 0.6 bi-directional rotation about the bearing affect the bearing length is generally less than the precision bearings processes of excess fluid and hydrostatic bearings commonly used axes shell with bearing type seal between the rust-proof the new technology to strengthen the test eccentric shaft bearing life a processing Detailed design theories and key technologies of the parallel machine tool oil bearing driven revolution in the mold industry in China bearing life to strengthen the test in the ascendant (a) bearing life in China to strengthen the test in the ascendant (b)
Basic bearing parameters: bearing diameter D width to length ratio B / L

D-bearing outside diameter, determine the bearing loads, generally to ensure that the pad mean pressure pm = 1.5 ~ 3.5MPa is appropriate, are contained in the device bearing, pm = 6~ 7MPa.

D-bearing bore diameter determines both within and outside the bearing outer diameter than the D / d, generally the D / d = 1.2 ~ 2.5 is appropriate. D / d determine the bearing width B.

B-bearing width, B = (D-d) / 2. Generally the width to length ratio, bi-directional rotation around the B / L = 1, B / L = 0.6 or so.

The number of z-bearing, impact bearing length L, generally the z-= 6 ~ 12, not less than 3, up to20 or more. Excessive wattage will reduce the carrying capacity, but can reduce the oil temperature.

Alpha-watt angle, α = 360k / z, k = (0.7 ~ 0.85) is the fill factor.

L-bearing length, L = kπ (D + d) / 2z, tile between the groove width of Lk = (1-k) π (D + d) / 2z.

Beta-bearing tilt height difference between the bearing and journal clearance h1 and the smallest gap h2, β = h1-h2.

h1, h2, respectively, was bearing the maximum, minimum film thickness. h2 = hmin the minimum film thickness, determined according to the principle of ensuring the full fluid lubrication, surface roughness Ra, whichever is greater, and generally the hmin ≈ 2Ra = 0.01 ~ 0.05mm. Bearing on the installation of manufacturing precision, but also appropriate to increase.

Β/h2- watts, is the main technical parameters of the bearing design, you can click "calculate the different watt high optimization than static characteristics" button, the optimal beta / L ≈ 1.2, generally take 1.2 to 2.0 is better.



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