When regreasing the electric motor bearing...

Question 1 / 2066636eed28f7522a1c51d65e

Question 1 of 2066636eed28f7522a1c51d65e

When regreasing the electric motor bearing as shown in figure "B" of the illustration, what practice should be avoided? Illustration EL-0218

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Question 1 of 20

66636eed28f7522a1c51d65e

When regreasing the electric motor bearing as shown in figure "B" of the illustration, what practice should be avoided? Illustration EL-0218

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🔍 Key Concepts

• Electric motor bearing lubrication practices for anti-friction (ball/roller) bearings • Effect of over-greasing vs. under-greasing on bearing temperature and seal pressure • Typical procedure for flushing old grease from a running motor using the drain/opening shown in figure B

💭 Think About

• Look closely at figure B: what is the purpose of the grease fitting and drain/opening arrangement, and how does that relate to flushing old grease? • For a high‑speed electric motor, what happens inside the bearing housing if you pack the entire cavity solid with grease? Think about heat generation and grease churning. • When, if ever, is solvent normally used on an in‑service, sealed or shielded motor bearing without disassembly?

✅ Before You Answer

• Identify which choice would lead to excess heat and pressure in the bearing housing at normal operating speed. • Decide which options are normal maintenance procedures versus something you would only do after the bearing is disassembled in a shop. • Confirm which practice prevents old grease from being trapped and allows new grease to flow through and out the drain, as suggested by the illustration.

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Question 1 of 20

When regreasing the electric motor bearing as shown in figure "B" of the illustration, what practice should be avoided? Illustration EL-0218

Only partially filling the bearing cavity with new grease.

Completely filling the bearing cavity with new grease.

Flushing out the old grease while running the motor with no load.

Flushing out the old grease with an approved solvent.

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Question 1 / 2066636eed28f7522a1c51d65e

Question 1 of 2066636eed28f7522a1c51d65e

When regreasing the electric motor bearing as shown in figure "B" of the illustration, what practice should be avoided? Illustration EL-0218

Back

Question 1 of 20

66636eed28f7522a1c51d65e

When regreasing the electric motor bearing as shown in figure "B" of the illustration, what practice should be avoided? Illustration EL-0218

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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