High speed rotating apparatus having face-to-face angular contac

Details High speed rotating apparatus having face-to-face angular contac High speed rotating apparatus having face-to-face angular contac

1995-04-06

1996-07-30

Vrablik, John J.

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

384613, F04C 1816, F16C 1900, F16C 3340

Patent

active

055405754

ABSTRACT:
A combination of two angular type ball bearings provided in a face-to-face arrangement to form a ball bearing unit in which the diameter of the balls of the second ball bearing is less than the diameter of the balls of the first ball bearing. This ball bearing unit is used at high speed to support a substantially unidirectional axial load. When this axial load is applied to the ball bearing unit, only the first ball bearing supports the axial load. The product of the pitch circle diameter of the row of balls in the ball bearing unit and the rotating speed of the inner ring of the ball bearing unit is in the range of 800,000 to 3,000,000 mm.rpm, while the radial load is up to one fifth the axial load.

REFERENCES:
patent: 5009583 (1991-04-01), Carlsson et al.
patent: 5273413 (1993-12-01), Wallin
"RHP Precision-High Precisio Bearings", pp. 17-24, (1987).
"Hydraulic Pressure Technology", pp. 1-6, (1987).
Kazuo Shigekawa, "Performance Characteristics of A Screw Expander", Kobe Steel Engineering Reports, vol. 34, No. 1, (1984).
SKF Precision Bearing (General Catalogue 1981).
Br. A. B. Jones, "The Life of High-Speed Ball Bearings", Jul. 1952, pp. 695-703, Transactions of the ASME.
Application of Engineering Ceramics to Rolling Bearing (Kikai Sekkei (Mechanical Design), Japan). pp. 66-71.
Tedric A. Harris, "Rolling Bearing Analysis", 1966, pp. 246-253.
New Departure, "Bearing Application", Part One--Principal ball bearing types and fundamentals of mounting, pp. 1-3.
Pumpac "The MRC Bearing System", pp. 1-7.
Wirth, Erkelenz/W. Germany "Milling Machine for Light Metal Ingots", p. 93.
Japanese Literature Excerpt "How to Select and use Rolling Bearings", pp. 325 and 326.
RHP Precision, High Precision Bearings, sections 2.3.4, 2.3.5 and 2.4.

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