Thrust bearing for high speed screw compressors
US5273413A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1993 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Feb 25, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/43
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A screw compressor assembly, comprising a housing, a pair of rotors rotatably journaled in said housing, a bearing system supporting the rotors including a radial cylindrical roller bearing and thrust bearing means rotatably supporting the journals in the housing including a first angular contact thrust ball bearing having a predetermined contact angle in the range of between about 30.degree. and 35.degree., and a second back-up angular contact bearing having a contact angle less than said contact angle of said first thrust bearing and in the range of between about 15.degree. and 20.degree., the difference between the contact angles of the thrust bearing and backup bearing being at least between about 10.degree. and 20.degree. whereby the internal force due to centrifugal force is small and therefore the induced axial force in the bearing system is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.