Bearings Flashcards
What is the fuction of a raceway in a bearing?
Provide a smooth surface for the rolling elements to move on
What is the angle of loaded zone on a roller thrust bearing?
360
Which rolling element design allows for the greatest amount of shaft angularity?
Spherical
What type of contact does a ball bearing have with the raceway?
Point contact
What are the features/ elements of a ball bearing/conrad bearing
Outer ring
Raceways
Rolling elements
Cage
Inner ring
What iso code represents an angular contact bearing?
7
Which type of bearing only supports pure radial loads
Cylindrical roller bearings
What feature is used with linear bearings to increase efficiency?
Recirculation of the ball/roller
Which of the following have loading slots?
Maximum capacity ball bearings
What’s the bore detention of a 6203 bearing
17mm
Does a compact aligning roller bearing (carb) allow some axial movement?
Yes. Shaft will move with inner ring
What’s another name for a cam follower linear bearing?
Track roller
Why are rollers in a spherical roller bearing shaped like barrels
To allow angularity of the inner ring
True or false. Four point angular contact bearings require less axial space than a pair of angular contact bearings
True
What design makes radial needle bearings smaller radially?
No inner ring
What type of linear bearings are made in modular lengths so it can be assembled to meet the requirements of the machine?
Caged needle bearings
What’s the purpose of preloading two bearings?
To Prevent axial movement
What two bearings can be used when preloading is required?
Tapered roller bearings
Angular contact bearings
What bearing code can be used in a fixed floating bearing arrangement (floating pillow block)?
ISO code starting with N
What type of lubrication film is formed to separate the rolling elements from the raceway in an anti friction bearing?
An elasto-hydrodynamic film
What type of bearing lubrication method allows for cooling and filtering of the oil?
Circulated
What is Brinelling?
It’s when hammer/shock loads dent the raceways of the bearings, typically oval shaped
What is false brinelling?
Round depressions worn in raceways, caused by vibrations when shaft is not being turned
