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Speculate on the mode of long-term failure for a jigsaw power tool (inside mechanism - gears...

Speculate on the mode of long-term failure for a jigsaw power tool (inside mechanism - gears and scotch yoke); how and where do you think this design will wear out, and why?

Engineering   Mechanical-Engineering   
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Answer #2

The possible failure for a jigsaw power tool are

1. Excessive noise or rattling due to internal damage or wear of carbon bushes or bearing etc

2. Overheating due to accessory misalignment, forcing tool to work too fast blocked motor housing vents

3. Performance decreases over time due to internal damage or wear.

Design mainly wear at

1. Scotch yoke mechanism as it is having sliding pairs.

2. Bushes and bearing because of rubbing action and it is made of softer material compare to mating pair

answered by: anonymous
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