Dec 15 2018 |
Logged in as : tryitout
Millwright Skills Assessment
1 of 7
At what pressure do lubrication systems for gearboxes typically operate?
75 PSI or higher
2 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
Spur and parallel helical gearing
Double thread worm gears with low lead angles
3 of 7
Single helical gears require thrust bearings.
4 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 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
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
5 of 7
What is the maximum temperature bearings should be heated to for installation?
6 of 7
What should you do to the end of the shaft, the key way, and any holes when installing a radial lip seal when the shaft cannot be chamfered?
Pack full of heavy grease
Cover with a protective sheet (thin brass shim stock, stiff plastic sheeting)
Well lubricated with heavy grease
7 of 7
What must you do to a bearing prior to installation when using an induction heating device?
Measured for fit
Allowed to cool
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