Solid Lubrication Technology. Part 1. Solid Lubricated High Speed - High Temperature Ball Bearings for High Load Applications.
Abstract
This report describes the first twelve month's effort on a program that has as its objective the development of improved self-contained, solid lubricated ball bearings capable of long-term operation under high speed - high load - high temperature conditions. The program encompasses a temperature range of -40 to 1500 deg F and speeds up to 30,000 rpm. A maximum load combination of 250 lbs thrust/250 lbs radial is being investigated. Studies to date have established the feasibility of operating 207 system solid lubricated ball bearings at 10600 rpm and 600 deg F for at least 90 hours under a combined load of 250 lbs thrust/250 lbs radial. In addition, improvements in retainer design, fabrication techniques, and composite properties have resulted in increasing the life of the 204 and 207 system at 600 deg F from an average of 200 hours to an operating life of 370 and 456 hours respectively. The bearings were operated at a speed of 10600 rpm under a 50 lb thrust/50 lb radial load. Finally, the operating life of the 204 bearing system at 20000 rpm and 600 deg F was increased to 101 hours from the maximum life of 2.7 hours obtained in the prior program. The bearing carried a 100 lb thrust/25 lb radial load and conformed in design to that derived from a computerized bearing design analysis performed for this program. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1969
- Accession Number
- AD0858000
Entities
People
- D. J. Boes