7.12 Flashcards
1
Q
How is overload wear represented?
A
Ripples and ridges
2
Q
What are the 2 issues cracking caused by
A
Failure in heat treatment or improper machining
3
Q
What is interference wear caused by?
A
Misalignment
4
Q
What is galling caused by?
A
Inadequate lubrication
5
Q
What causes tight joints?
A
Substancesgetting in or bent pins?
6
Q
What causes enlarges holes in chains?
A
High overload
7
Q
What are the 4 most common materials for sprockets?
A
Steel
Alloys
Hard fibre
Plastic
8
Q
What should you look for in a sprocket to see if there is wear?
A
Worn Teeth
Misalignment
9
Q
What are the 3 types of screw jacks?
A
Worm and peg
Worm and nut
Ball
10
Q
What is the issue with worm and peg mechanism?
A
Excessive backlash
11
Q
What is the most common worm mechanism?
A
Worm and nut
