The Bock F14 main bearing is a type of bearing that is designed for use in high-speed engines. It is a low-friction, full-contact bearing that provides excellent performance in high-performance applications. The F14 bearing is made from a special material called chromexcel, which is a high-grade stainless steel that is hardened and tempered to offer superior wear resistance and strength. This material can handle temperatures up to 250 degrees Celsius and is also resistant to corrosion and shock. The F14 bearing is capable of withstanding heavy loads and is designed to provide smooth and reliable operation in high-speed applications.