Machine Design
Pitch point of a cam is

A point on the pitch curve having maximum pressure angle
A point on the pitch curve having minimum pressure angle
Any point on the pitch circle
Any point on the pitch curve

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Machine Design
In oilness bearings

The oil film pressure is generated only by the rotation of the journal
Do not require external supply of lubricant
Grease required to be applied after some intervals
The oil film is maintained by supplying oil under pressure

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