Publication result detail

Effect of Contact Conformity on Grease Lubrication

OKÁL, M.; KOŠŤÁL, D.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

Original Title

Effect of Contact Conformity on Grease Lubrication

English Title

Effect of Contact Conformity on Grease Lubrication

Type

WoS Article

Original Abstract

This work focused on the experimental study of grease lubrication mechanisms around contacts in radial ball bearing 6314. The main objective of this work was to show the influence of conformities and their impact on grease lubrication in ball bearings. For the experiments, a tribometer of ball-on-ring configuration was used and fluorescence microscopy was chosen as the observation method. The results showed that, under starvation conditions, a conformity of 0.52 at velocities around 2 m/s produces a 50% thicker lubricating film than a conformity of 0.58. The available amount of lubricant around the contact area for conformity 0.52 was approximately three times less than that for conformity 0.58, and the same ratio was observed for the amount of lubricant on the rolling track. Experiments show that a realistic tribometer geometry allows a more accurate experimental study of the lubrication mechanisms of greases in ball bearings.

English abstract

This work focused on the experimental study of grease lubrication mechanisms around contacts in radial ball bearing 6314. The main objective of this work was to show the influence of conformities and their impact on grease lubrication in ball bearings. For the experiments, a tribometer of ball-on-ring configuration was used and fluorescence microscopy was chosen as the observation method. The results showed that, under starvation conditions, a conformity of 0.52 at velocities around 2 m/s produces a 50% thicker lubricating film than a conformity of 0.58. The available amount of lubricant around the contact area for conformity 0.52 was approximately three times less than that for conformity 0.58, and the same ratio was observed for the amount of lubricant on the rolling track. Experiments show that a realistic tribometer geometry allows a more accurate experimental study of the lubrication mechanisms of greases in ball bearings.

Keywords

grease lubrication; ball bearing; starvation; replenishment

Key words in English

grease lubrication; ball bearing; starvation; replenishment

Authors

OKÁL, M.; KOŠŤÁL, D.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

RIV year

2023

Released

01.11.2022

Publisher

MDPI

ISBN

2075-4442

Periodical

Lubricants

Volume

10

Number

11

State

Swiss Confederation

Pages from

1

Pages to

13

Pages count

13

URL

https://www.mdpi.com/2075-4442/10/11/289

Full text in the Digital Library

http://hdl.handle.net/11012/208588

BibTex

@article{BUT179841,
  author="Michal {Okál} and David {Košťál} and Petr {Šperka} and Ivan {Křupka} and Martin {Hartl}",
  title="Effect of Contact Conformity on Grease Lubrication",
  journal="Lubricants",
  year="2022",
  volume="10",
  number="11",
  pages="1--13",
  doi="10.3390/lubricants10110289",
  url="https://www.mdpi.com/2075-4442/10/11/289"
}

Documents

lubricants-10-00289