C - Bearings and Seals Flashcards
True or False: All bearings are designed to provide support to movie parts, keep parts in alignment, increase friction and provide a replaceable wear surface.
False; Bearings are designed to decrease friction.
Axial loads may be offset by:
Helical splines.
Crush is a term used to describe the:
Distortion given to a bearing shell.
Describe an anti-friction bearing.
High contact between moving parts.
True or False: Plain roller bearings are designed to support radial loads only.
True.
Needle bearings are:
Most often used where space is limited.
What’s a term that best describes static seals.?
They seal between non-moving parts.
True or False: O-rings may be replaced with silicone is needed.
False; Silicone is only used as a sealant in place of a gasket.
Describe gaskets.
Metal gaskets can usually withstand higher pressures and temperatures.
True or False: Silicone may be used with cork or paper gaskets.
False; Do not use silicone with cork or paper gaskets as the gasket may slip out or become too thick.
Describe face seals.
There is little no wear on the moving shaft.
What is preload? ;)
Preload is set by shims, spacers or a threaded ring.
Brinelling is:
Indentations from shock loading.
With regard to bearings, arcing is a term used to describe:
Marks on the bearing due to discharges of electricity within the bearing.
List three contributing factors that lead to abnormal bearing fatigue.
Operating above the dynamic load rating, operating at speeds above the bearing rating, shock loads, vibrations, or operating at extreme temperatures - above 150 degrees.
