Crankshaft bearing having hydrodynamic thrust flanges

Details Crankshaft bearing having hydrodynamic thrust flanges Crankshaft bearing having hydrodynamic thrust flanges

1991-12-19

1993-03-09

Hannon, Thomas R.

Bearings

Rotary bearing

Fluid bearing

384294, 384368, F16C 3206, F16C 902, F16C 3310

Patent

active

051921367

ABSTRACT:
A split crankshaft bearing assembly includes two flanged half bearings adapted to collectively encircle a crankshaft. The flanges are formed with oil supply grooves that subdivide the flange surface into thrust bearing pads. Each pad includes a positively sloped ramp surface leading to a raised land surface. The rotating crankshaft drags a film of oil onto the land surface where it provides hydrodynamic thrust support for the shaft. To facilitate close tolerance control on the thrust bearing pad contour, the manufacturing process is carried out so that the oil supply grooves are formed and the thrust face presized prior to formation of the pad final contour. The pad contour is formed by a coining operation.

REFERENCES:
patent: 4326758 (1982-04-01), Nozue et al.
patent: 4348065 (1982-09-01), Yoshioka et al.
patent: 4488826 (1984-12-01), Thompson
patent: 4599147 (1986-07-01), Thompson
patent: 4702624 (1987-10-01), Fontana
patent: 4714356 (1987-12-01), Damour et al.
patent: 4771744 (1988-09-01), Corbett

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