Machine Design
For hardening alloy steels and high speed steels, they are heated to

700 to 900°C
500 to 600°C
1100 to 1300°C
1300 to 1500°C

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Machine Design
When the shaft rotates in anticlockwise direction at high speed in a bearing, it will

Move towards left of the bearing making metal to metal contact
Move towards right of the bearing making no metal to metal contact
Have contact at the bottom most of the bearing
Move towards right of the bearing making metal to metal contact

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