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Bearings and Seals
Bearings and Seals MAP 4
27
Other
Not Applicable
11/20/2021

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Cards

Term
Type of bearing loads?
Definition
Axial and radial thrust
Term
Plain Bearing Materials?
Definition
Bronze (typical), Sintered Bronze, Cast Iron, Plastic, Teflon, Rubber
Term
Split plain bearings advantages
Definition
Easier to replace and can uses shims to tighten.
Term
How are split plain bearings held in place?
Definition
Held in place with tabs or dowels
Term
Plain thrust bearings advantages?
Definition
Stops shaft end movement (Thrust). May require 2
Term
Different types of plain thrust bearings?
Definition
Flat (For lighter loads) and Tapered (Heavier loads, Throws oil to outside)
Term
Anti-friction Bearing Advantages?
Definition
Very little friction, no serrate lube systems, higher rpm, close tolerances, if sealed no lube required.
Term
Types of anti-friction bearings?
Definition
Ball, roller, thrust.
Term
Single row deep groove advantages? Disadvantage?
Definition
Most common, can handle radial loads. Can handle small axial (can pop apart), requires accurate alignment
Term
Double-row deep groove advantages?
Definition
Heavier radial load than single row. They are not as common.
Term
What is an advantage of double row angular contact? What is a disadvantage?
Definition
Heavy radial and two direction axial loads. Slower speed and doesn't like misalignment.
Term
How much of misalignment in self-aligning bearings?
Definition
Up to 1-1/2 degrees of misalignment. some can handle 2 degrees.
Term
Roller bearing types?
Definition
Cylindrical, spherical, tapered, and needle.
Term
What roller bearings are very common and can handle radial and thrust loads and have 2-1/2 degree misalignment?
Definition
Single/Double-row spherical roller bearings
Term
What roller bearing can handle Large radial thrust and large one directional axial thrust, typically come in pairs, and doesn't like misalignment?
Definition
Tapered roller bearings
Term
What are applications of double row tapered roller bearings?
Definition
Heavy equipments
Term
Needle bearings are good for?
Definition
Radial loads, tight spaces, and doesn't require an inner race but needs a hardened shaft.
Term
What can improper bearing installation cause?
Definition
shorten bearing life
Term
What is the process of installing a bearing?
Definition
Clean the bearing, heat in oil at 175 deg. , lubricate bearing ID/Od (Light oiling), seat bearing pushing on correct race.
Term
Seal categories?
Definition
Gaskets, O-rings, u-section rings(Cups), lip seals
Term
What seal requires static assembly?
Definition
Gaskets.
Term
What materials are used for gaskets?
Definition
Paper(Low), Cork, rubber, Metals (High)
Metals: Monel, Stainless, Compound, metal asbestos.
Term
What gaskets can have static OR dynamic assembly?
Definition
O-Rings
Term
U-cups can only______?
Definition
Take pressure one directional and may require second one in the opposite direction.
Term
Lip seals are?
Definition
Metal encased rubber seals.
Term
How are lip seals installed?
Definition
Press fitted on and installed in place by springs
Term
Purpose of lip seals?
Definition
Meant to keep dirt out?
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