After following the prescribed procedures to...

Question 1 / 2066636eef28f7522a1c51fb4c

Question 1 of 2066636eef28f7522a1c51fb4c

After following the prescribed procedures to measure the thrust bearing clearance shown in the illustration, the distance "F" is determined to be 200 mm, and 'f1' is 2.3 mm. Which of the following statements describes the condition indicated by these dimensions? Illustration MO-0121

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🔍 Key Concepts

• Thrust bearing axial clearance and how it is shown as dimension 'f1' in the table • Difference between nominal dimension (f) and normal / maximum play (f1) in the clearance chart • How excessive axial play will affect ahead vs. astern shaft movement in a thrust bearing

💭 Think About

• Look at the table in the illustration: how do the given values for f and f1 (200 mm and 2.3 mm) compare with the nominal dimension, normal play, and maximum worn play? • Which option actually talks about axial movement of the shaft in the bearing, and uses numbers that can be derived from comparing 2.3 mm to the normal and maximum clearances? • Do any options mention concepts (like loading ratio or thrust shoe markings) that are NOT supported by anything in the drawing or table?

✅ Before You Answer

• Verify from the table that f = 200 mm is the nominal dimension, not a measure of wear • Check that normal play f1 = 1.0 mm and maximum (worn) play f1 = 2.0 mm, then compare these with the measured 2.3 mm • Confirm which choice deals with axial play / movement of the shaft and uses values that match: 2.3 mm total play, 1.3 mm more than normal, and 0.3 mm more than the maximum worn play

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Question 1 of 20

These dimensions indicate the presence of flourishing marks on the thrust shoes; the marks becoming visible as the distance at 'f1' increases.

It is possible for the shaft to move axially 2.3 mm during astern operation and relates to an excess movement of 1.3 mm, 0.3 mm beyond the maximum worn play.

The loading ratio, or shaft diameter divided by collar surface area is within 2.7:1.

Question 1 / 2066636eef28f7522a1c51fb4c

Question 1 of 2066636eef28f7522a1c51fb4c

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Question 1 of 20

66636eef28f7522a1c51fb4c

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🔍 Key Concepts

💭 Think About

✅ Before You Answer

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