Bearing assembly with sidewall-brazed PCD plugs

Details Bearing assembly with sidewall-brazed PCD plugs Bearing assembly with sidewall-brazed PCD plugs

1992-03-30

1994-08-30

Hannon, Thomas R.

Bearings

Rotary bearing

Plain bearing

175371, 384 95, 384285, 3849071, F16C 1704, F16C 3304, E21B 1022

Patent

active

053421299

ABSTRACT:
A method of forming a bearing assembly is set forth. A PCD disk typically of circular construction is joined to a cylindrical plug formed of support metal. The plug is registered with respect to an internal shoulder in a passage formed in a ring for the bearing assembly. Multiple PCD disks are installed in the same fashion. In assembly, the disk is attached to the cylinder, the cylinder is wrapped in brazed material, then the cylinder with the brazed material wrapping is registered on an internal shoulder in a drilled passage in the bearing assembly. A brazing temperature which is too low to damage the material is applied to complete joinder. Then, multiple disk faces supported by individual disk in a circle around the bearing assembly can be lapped to assure that they are brought to a common height with respect to a reference plane.

REFERENCES:
patent: 4410054 (1983-10-01), Nagel et al.
patent: 4468138 (1984-08-01), Nagel
patent: 4708496 (1987-11-01), McPherson
patent: 4729440 (1988-03-01), Hall
patent: 4789251 (1988-12-01), McPherson et al.
patent: 4802539 (1989-02-01), Hall et al.

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