🔍 Key Concepts

• How a Kingsbury thrust bearing transmits axial load and how its stationary parts are held in place • Typical machine design methods for preventing rotation of a ring or bushing in a housing • The difference between a locating/anti-rotation device and a device used mainly for alignment or keying for torque

💭 Think About

• Think about which feature is commonly used specifically to stop a relatively thin ring from rotating inside a housing under load, without needing to transmit large torque like a shaft key would. • Consider how much space there is around a Kingsbury bearing base ring and which of these options is the simplest, most practical way to keep it from turning but still allow easy assembly and replacement. • Ask yourself: in general machinery, what small component is often used to keep a bearing race or ring from rotating, as opposed to driving a shaft or gear?

✅ Before You Answer

• Verify which of the listed options is normally used as an anti-rotation locator for rings, races, or sleeves in housings. • Eliminate any feature that is mainly used to transmit torque along a shaft rather than just prevent a ring from spinning in a bore. • Consider which single, simple device designers prefer to secure a stationary ring while keeping machining and assembly straightforward.