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Motor manufacturers: Have you experienced batch failures where new motors fail with noise/jamming? Post-mortem reveals the root cause: bearing cage defects.

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The cafeteria aunt recently collapsed: the newly purchased cold air fan hadn't been used for a few days before it started 'screeching'. Upon opening it up: the dust cover was rusted, the inner and outer rings were welded together, and the grease had leaked away... This isn't a malfunction, it's an i

‌ "Earlier I made a video about fan bearings. A viewer commented: "Don't all modern fans use sleeve bearings now? Are deep groove ball bearings still used?"Today we'll address this.‌‌In fan operation, bearings are critical components that directly determine noise levels, operational lifespan, and p

The Dragon Boat Festival, also called Duanwu Festival, is celebrated on the 5th day of the 5th lunar month (around June). Its origins trace back over 2,000 years to commemorate Qu Yuan, a patriotic poet who drowned himself to protest corruption. Locals raced boats to save him and threw rice dumpling