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8751464 
Journal Article 
INFLUENCE OF OIL COMPOSITION ON OPERATING LIFE OR ROLLING-CONTACT BEARINGS 
Nosov, MI; Raskurazheva, GN; Ivankina, EB; Lapshin, VN 
1981 
Yes 
Chemistry and Technology of Fuels and Oils
ISSN: 0009-3092
EISSN: 1573-8310 
17 
11-12 
691-693 
In recent years, the volume of bearing production has increased very significantly. This trend is explained not only by the development of new types of vehicles and equipment, but also by the limiting life of bearings. The main factors determining the life of rolling-contact bearings are erosive wear and pitting. In the reported experiments, the authors conducted comparative tests on a number of oils in rolling-contact bearings in specially designed test stands. Tests were run on oil samples formulated from the highly treated oil VI-30 (produced from medium-sulfur crudes) with DF-11 zinc dialkyldithiophosphate as an antiwear additive (commercial oil IGP-30) and with the tribopolymerizing additive EF-357 in comparison with industrial oils I-5A, I-12A, and I-50A from medium-sulfur crudes without additives. Tests were also run on the VI-30 oil base stock. Preliminary tests under these conditions showed that none of the bearings failed in 300 h due to fatigue pitting. Therefore, the bearing operability was rated on the basis of the wear in relation to the oil composition. Data are presented which demonstrate that the oil with the antiwear additive DF-11 (IGP-30 oil) in comparison with the oil without additive (VI-30) gives a substantial reduction of roller bearing wear and increases the life of ball bearings.