May 27 2019 |
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Millwright Skills Assessment
1 of 7
What is the function of a radial lip seal?
Retention of fluids
Exclusion of foreign matter
2 of 7
What should be used when a self-aligning bearing has to be pressed on the shaft and pushed into the housing at the same time?
a mounting sleeve of soft steel with a flat face that is just a little larger than the bearing bore
with its outside diameter no larger than the inner ring shoulder height
a mounting sleeve of soft steel with a flat face that is just a little smaller than the bearing
outside diameter with its inside diameter no larger than the outside ring shoulder height
alternate between two mounting sleeves one sized for the outer ring and one sized for the
a mounting disc which bears against both bearing rings at the same time
3 of 7
Which is a recommended method of heating a bearing for installation?
Hot Oil Bath
Hot Air Cabinet
Induction Heating Device
All of the above
4 of 7
To control or adjust backlash on gear sets, some provision is made for shifting one gear relative to the other gear. This allows control over backlash at the initial assembly and throughout operating life. Which gearing types have the provision to shift one gear relative to the other gear?
Single thread worm gears with high lead angles
Bevel and hypoid gearing
Double thread worm gears with low lead angles
Spur and parallel helical gearing
5 of 7
What must you do to a bearing prior to installation when using an induction heating device?
Measured for fit
Allowed to cool
6 of 7
Backlash in gears is defined as
the amount of loading applied to the gear
the sliding contact action between the worm and driven gear
the amount of movement allowed by the gears shaft bearings
the play between mating teeth
7 of 7
Which of the following shaft conditions will prevent a shaft-mounted gear box from being properly installed?
Out of round
All of the above
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