Antifriction Bearings Flashcards
A external self aligning ball bearing gets its misalignment capabilities
A Spherical seat between the outer ring and the outer housing
The ISO basic number for each standard antifriction Bering includes information about its
Bore size bearing size bearing series
What does the suffix K mean
At 12 to 1 tapered bore
Sealed bearing should never be heated above
80°C or 175°F
What is the meaning of C3 in the Bering suffix
Clarence greater than normal
What with the fit chart reading of k6, 4L – 6T tell you
Bearing bore shaft transition fit
You are mounting spherical roller bearing with the tapered bore what would be the installed clearance be if the bench Clarence is .006 inches
.003 inches
List three states of lubrication
Boundary lubrication
Mixed film lubrication
Hydrodynamic lubrication
List the four main parts of a single row deep groove ball bearing
Cage
Race Ways
Rolling elements
Outer and inner rings
How could you visually identified the maximum capacity ball bearings
The large area of contact the larger The load capacity of the Bering this is because the load distributes over a larger area
What is the internal clearance in a Spherical roller bearing called prior to installation
Bench clearance
What functions do shields perform in antifriction bearings
To keep dirt out of the Bering
What function do seals perform in the antifriction bearing
Keep dirt out of the Bering also there’s a small gap between the shaft and the seal to allow lube to ride
What is the function of the grooves cut into the outer circumference of the outer ring of some antifriction bearings
To allow for lubrication to be injected
What feature would indicate an internally self aligning bearing
Spherical outer race
What are the three types of fits
Clearance
Transition
Interference
List three factors that could influence the type a bearing selected for an application
Area of contact
Direction of load
Load zone
Define axial load
Runs parallel to the journal or shaft
Define radial load
Runs perpendicular to the shaft or journal
Single roll deep groove a ball bearing most commonly called
Conrad bearing
Maximum capacity deep groove ball bearing
Is similar to the deep groove ball bearing except that it is assembled with more balls
Single roll angular contact ball bearing
Accommodates both radio and trust notes
Ball thrust bearing
Is designed for pure thrust load only
What does the suffix C-1 through C-5 mean which is the biggest and which is the smallest
Indicates the amount of internal Clarence c1 being the smallest C5 the largest a normal clearance lies between C2 and C3
When hot mounting a bearing what temperature should you bring the Bering to about
80°C but never heat above 120°C
What kind of load can a single roll angular contact ball bearing
Combination one direction axial
What kind of load Can a self aligning ball bearing
Radial
What kind of load a single roll tapered roller bearing
Combination or one direction axial
What kind of load will a double row tapered roller bearing have
Combination or reversing thrust
What kind of load will a needle bearing have
Radial load only
Kind of load will a carb bearing have
Radial only
Is a common designation for shield
Z
What are the common designation for a rubbing seal
RS
What type of load can a single roll deep groove ball bearing handle
Combination, two directions
