Machine Design
18/8 steel contains

18% vanadium and 8% nickel
18% nickel and 8% chromium
18% nickel and 8% vanadium
18% chromium and 8% nickel

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Machine Design
In hydrodynamic bearings

The oil film pressure is generated only by the rotation of the journal
Grease is used for lubrication
The oil film is maintained by supplying oil under pressure
Do not require external supply of lubricant

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