Tpc 343 Flashcards
(25 cards)
What is the best way to determine the correct running clearance when installing a bearing?
To use established charts and tables that exist for this purpose
The materials ability to dissipate any excessive heat generated during operation is called?
Thermal conductivity
The purging action of the newly applied grease tends to flush out?
Old lubricants from the bearing surfaces
What are signs of discoloration?
Look for signs of high, localized heat. Excessive wiping of the liner material
What can you coat the mandrel with to prevent the babbit from clinging
White lead
What does screeching indicate?
This usually signals that clearances are too tight or that lubrication is inadequate
When you must leave the job for a short time or overnight, make sure you cover the bearing with?
Grease proof paper
The bearing is driven up the taper by tightening a?
Heavy duty nut
When using blue transfer gauge how much contact is considered satisfactory?
Eighty percent
When cold mounting before employing either the arbor press or impact technique make sure to lubricate the bearing bore and the shaft with?
A light oil
What should you use to loosen a locknut?
A spanner wrench
To use the heating ring, heat the bearing to approximately?
500 degrees Fahrenheit
If newly cleaned and inspected bearings are not to be reinstalled and lubricated immediately, they must be protected, press good, clean…
Bearing grease into the rollers
How can you remove bearings
By impact or heating
What is one way to remove bearings that are approximately 4in. In diameter or smaller?
Using the arbor press
To remove a bearing a splitter may be used with a?
Mechanical puller
What seal is used in applications where dirt, water, or other contaminants are present in the area
The contact seal
What bearing allows for some misalignment?
Spherical roller bearings
What is the allowable tolerance for shafts 2 to 4 in. In diameter?
.001
Where can you find a bearings final clearance?
Bearing manufacturers provide charts listing the correct amount of takeout
What loads can ball bearing screws support?
Vertical and horizontal loads
Standard ball bearings support the?
Screw
How efficient is the rolling contact action of the ball bearing screw?
Ninety percent of
What seal is effective in rotating shaft applications where such contaminants as water, dust, dirt, coal, ore, and mud are present in great quantities and close to the machinery?
A V-ring seal
