🔍 Key Concepts

• Purpose of lubrication in high-speed precision bearings • Difference between oil characteristics (like detergent, viscosity) and system performance (pressure, flow, quantity) • What actually prevents metal-to-metal contact at high RPMs

💭 Think About

• Ask yourself: in a high-speed precision bearing, is the most critical factor the special type of oil, or how the lubrication is delivered to the bearing surfaces? • Consider which choice describes a condition that must be maintained every moment the bearing is operating at high speed. • Which option focuses on ensuring a stable lubricating film between moving parts, rather than a specific PSI number or chemical additive?

✅ Before You Answer

• Verify which option talks about overall delivery of lubrication (both amount and force), not just its chemical makeup. • Check if any answer choice seems too specific or arbitrary (for example, a fixed PSI value) for all high-speed precision bearings. • Focus on the choice that would reliably maintain a continuous oil film under varying speeds and loads.