That expert knows what each letter in the bearing model represents

The letters in bearing models usually denote the following meanings: 1. A: Represents an angular contact bearing； 2. B: Represents a double angular contact bearing ； 3. C: Represents angular contact bearings, which can still withstand a certain amount of load even when there is no loading in either direction ； 4. D: Represents a double angular contact bearing, capable of withstanding a certain amount of load even when there is no load in one specific direction ； 5. E: Represents a type used in a large number of ball bearings, suitable for withstanding very high radial and axial loads ； 6. G: Represents an outer ring with a flange, commonly used in sliding profiles or to withstand large radial loads ； 7. K: Represents tapered roller bearings, which can withstand high radial and axial loads ； 8. L: Represents a double-row tapered roller bearing ； 9. M: Represents a suspension bearing (e.g., car wheel hub bearing) ； 10. N: Represents the bearings used in the continuously variable transmission ； 11. P: Represents bearings with a higher precision grade ； 12. R: Represents a separable, adjustable inner-ring bearing ； 13. S: Represents the elastic outer ring, which can operate under adverse conditions ； 14. T: Represents a type used in many ball bearings, suitable for withstanding high radial loads as well as some axial loads ； 15. U: Indicates ultra-precision (ultra-high-speed) angular contact bearings ； 16. V: Represents a grooveless filled ball bearing ； 17. W: Represents the elastic inner ring, which can operate under adverse conditions ； 18. X: Represents bearings with special structures. As for the difference between E and T, both belong to certain specific types of bearings, but their functions and applications differ. Type E bearings are typically designed to withstand high radial and axial loads, and they also feature very high load capacity and a long service life. Therefore, they are typically used in applications that require high reliability and durability, such as aerospace, medical equipment, industrial robots, and other fields. T-type bearings are capable of withstanding high radial and axial loads simultaneously, but their axial load capacity is lower than that of E-type bearings. They are often used for thrust running-in, small amounts of axial movement, and other applications that require the ability to handle both radial and axial loads at the same time. .

THK Japan – Nippon Teiki, that is Kai; linear guide rail series. EZO Japan – Nippon EZO Company; miniature bearings

The meaning of the letters that follow the designation of NSK bearings in Japan is usually found at the end of the bearing model, such as 7224B.

For each numerical code of NSK bearings, refer to the markings on the photo.