A tapered bore bearing is distinguished by which feature in the bearing code?

A tapered bore bearing is indicated by the letter "K" in the bearing code, which signifies that the inner diameter of the bearing's bore is tapered. This design allows for easier installation on tapered shafts and enables better adaptability and fit, providing improved load distribution and alignment within various machinery setups.

Tapered bore bearings are often used in applications where the load may shift or where adjustments are needed to ensure proper seating and alignment. The taper allows for axial and radial load capabilities, which is beneficial in dynamic applications. Understanding these designations is crucial for selecting the right bearings for specific applications, ensuring the right fit and function in machinery. This is why the letter "K," which represents tapered bore bearings, is the correct choice.