Question 88General Subjects - QMED

The correct answer is B) 25-50% of the original void space in the bearing. The recommended amount of grease injected into a ball or roller bearing is approximately 25-50% of the original void space in the bearing. This helps ensure adequate lubrication and prevents a high operating temperature. If too little grease is used, the bearing may not be properly lubricated, leading to increased friction and heat. Conversely, if too much grease is used, it can lead to excess heat generation and potential bearing failure. The other options are incorrect because 10-25% (A) may not provide enough lubrication, 50-75% (C) may lead to excessive grease buildup, and 75-95% (D) would likely result in overlubrication and higher operating temperatures.