Bearing crush is a manufacturing concept used to ensure

Bearing crush is a manufacturing concept used to ensure

• A. Reduced friction
• B. Improved lubrication film
• C. Proper fit
• D. Quieter operation

Answer: (C)

Bearing crush is a manufacturing step where the bearing shells are slightly deformed as the cap is torqued, creating a controlled preload that locks the shells in place. This crush ensures the bearing sits firmly and centrally in the housing or bore, producing a consistent, correct oil clearance around the bearing. In other words, it guarantees a proper fit between the bearing and its mating surfaces, so the bearing stays in the right position under load and heat. While a good fit can influence how the engine runs—potentially affecting noise or lubrication indirectly—the primary purpose of crush is to achieve that proper, secure fit.

Bearing crush is a manufacturing step where the bearing shells are slightly deformed as the cap is torqued, creating a controlled preload that locks the shells in place. This crush ensures the bearing sits firmly and centrally in the housing or bore, producing a consistent, correct oil clearance around the bearing. In other words, it guarantees a proper fit between the bearing and its mating surfaces, so the bearing stays in the right position under load and heat.

While a good fit can influence how the engine runs—potentially affecting noise or lubrication indirectly—the primary purpose of crush is to achieve that proper, secure fit.