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← ScienceWhich risk increases when lubricant temperatures decrease inside bearings?
A)Hydrodynamic film thickness reduction✓
B)Increased convective heat transfer
C)Elastohydrodynamic lubrication boost
D)Reduced asperity contact fatigue
💡 Explanation
Reduced bearing temperatures increase lubricant viscosity. The mechanism of hydrodynamic lubrication relies on the inverse relationship between temperature and viscosity because reduced temperatures increase viscosity to an extent that hydrodynamic film thickness deteriorates, therefore increasing wear rather than improving lubrication parameters.
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