Lubrication Of Bearings Flashcards
Bearings may be lubricated with what?
Oil or grease
What kind of lubricants are suitable for severe applications?
Synthetic or dry lubricants
Why is grease typically used more than oil?
It is easily contained in a housing
Oil is typically used in what kind of applications?
High speed or high temperature
Lubricating oils are classified as either?
Petroleum or synthetic
Dry lubricants are used in what kind of applications?
Low speed, high temperature
For rolling element bearings operating in a housing, how much should be submerged in oil?
1/3 to 1/2 of the diameter of the lowest rolling element.
What do linear bearings do?
Provide low friction motion in one dimension
Linear bearings usually consist of a fixed support component called a what?
Rail, way or guide
Linear bearings also consist of a sliding component called a what?
Block, shoe, carriage or slide
What are seals used for?
To keep the elements out of a bearing and hold the lubricants inside
What are 2 types of seals?
Contact and non contact
Contact seals do what?
Maintain contact with the rotating and stationary components to prevent lubricant loss
Advantages of using non contact seals?
Eliminates friction & heat build up, making labyrinth seals suitable for high speed
Mounted bearings include what?
Pillow block (soild and split housing) Flanged cartridge, cylindrical cartridge and take up units.
