Details
| Original language | English |
|---|---|
| Pages (from-to) | 1003-1006 |
| Number of pages | 4 |
| Journal | Industrial Lubrication and Tribology |
| Volume | 71 |
| Issue number | 8 |
| Publication status | Published - 3 Apr 2019 |
Abstract
Purpose: The efficient and economical use of natural resources is a big issue. Machine elements with a rolling contact are highly relevant because of their wide application in technical systems and a large production quantity. Innovative hard machining can reduce the friction and increase the fatigue strength of rolling element bearings. The purpose of this study is to focus on the surface properties of such parts. Design/methodology/approach: A new model to predict bearing fatigue life is presented which takes compressive residual stresses in the bearing subsurface area into consideration. The investigated bearings were machined by the processes of hard turning, hard turning with subsequent deep rolling and a combination of hard turning and deep rolling (turn-rolling) in one process step. Changes in the residual stress state during bearing fatigue tests were investigated and the influence of residual stresses on the bearings fatigue life was researched. Findings: Both combinations including the deep rolling process decrease the surface roughness and induce compressive residual stresses. As a result, the L10 fatigue life of roller bearings was increased by the factor of 2.5. Owing to the developed models, this effect can be considered within the design process. Originality/value: In the context of the research program “Resource efficient Machine Elements (SPP1551),” machining processes of bearings were investigated regarding the bearing fatigue life. By inducing beneficial residual stresses on the bearings’ subsurface area, the fatigue life could be increased. Thus higher resource efficiency was achieved. To increase the productivity, a combination of hard turning and deep rolling was evaluated.
Keywords
- Bearing fatigue life, Residual stresses, Resource efficiency
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Energy(all)
- Materials Science(all)
- Surfaces, Coatings and Films
Sustainable Development Goals
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In: Industrial Lubrication and Tribology, Vol. 71, No. 8, 03.04.2019, p. 1003-1006.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Enhancement of roller bearing fatigue life by innovative production processes
AU - Pape, Florian
AU - Maiss, Oliver
AU - Denkena, Berend
AU - Poll, Gerhard
PY - 2019/4/3
Y1 - 2019/4/3
N2 - Purpose: The efficient and economical use of natural resources is a big issue. Machine elements with a rolling contact are highly relevant because of their wide application in technical systems and a large production quantity. Innovative hard machining can reduce the friction and increase the fatigue strength of rolling element bearings. The purpose of this study is to focus on the surface properties of such parts. Design/methodology/approach: A new model to predict bearing fatigue life is presented which takes compressive residual stresses in the bearing subsurface area into consideration. The investigated bearings were machined by the processes of hard turning, hard turning with subsequent deep rolling and a combination of hard turning and deep rolling (turn-rolling) in one process step. Changes in the residual stress state during bearing fatigue tests were investigated and the influence of residual stresses on the bearings fatigue life was researched. Findings: Both combinations including the deep rolling process decrease the surface roughness and induce compressive residual stresses. As a result, the L10 fatigue life of roller bearings was increased by the factor of 2.5. Owing to the developed models, this effect can be considered within the design process. Originality/value: In the context of the research program “Resource efficient Machine Elements (SPP1551),” machining processes of bearings were investigated regarding the bearing fatigue life. By inducing beneficial residual stresses on the bearings’ subsurface area, the fatigue life could be increased. Thus higher resource efficiency was achieved. To increase the productivity, a combination of hard turning and deep rolling was evaluated.
AB - Purpose: The efficient and economical use of natural resources is a big issue. Machine elements with a rolling contact are highly relevant because of their wide application in technical systems and a large production quantity. Innovative hard machining can reduce the friction and increase the fatigue strength of rolling element bearings. The purpose of this study is to focus on the surface properties of such parts. Design/methodology/approach: A new model to predict bearing fatigue life is presented which takes compressive residual stresses in the bearing subsurface area into consideration. The investigated bearings were machined by the processes of hard turning, hard turning with subsequent deep rolling and a combination of hard turning and deep rolling (turn-rolling) in one process step. Changes in the residual stress state during bearing fatigue tests were investigated and the influence of residual stresses on the bearings fatigue life was researched. Findings: Both combinations including the deep rolling process decrease the surface roughness and induce compressive residual stresses. As a result, the L10 fatigue life of roller bearings was increased by the factor of 2.5. Owing to the developed models, this effect can be considered within the design process. Originality/value: In the context of the research program “Resource efficient Machine Elements (SPP1551),” machining processes of bearings were investigated regarding the bearing fatigue life. By inducing beneficial residual stresses on the bearings’ subsurface area, the fatigue life could be increased. Thus higher resource efficiency was achieved. To increase the productivity, a combination of hard turning and deep rolling was evaluated.
KW - Bearing fatigue life
KW - Residual stresses
KW - Resource efficiency
UR - http://www.scopus.com/inward/record.url?scp=85063960292&partnerID=8YFLogxK
U2 - 10.1108/ilt-07-2018-0254
DO - 10.1108/ilt-07-2018-0254
M3 - Article
AN - SCOPUS:85063960292
VL - 71
SP - 1003
EP - 1006
JO - Industrial Lubrication and Tribology
JF - Industrial Lubrication and Tribology
SN - 0036-8792
IS - 8
ER -