Difference between TA oil seal and TB oil seal
TA oil seals and TB oil seals are rotary oil seals, which are mainly used to prevent the leakage of lubricants and prevent the intrusion of external pollutants, but there are some differences in structure and application scenarios between them:
Structural features:
TA oil seal: has a double lip design, that is, there are two sealing lips, one of which is the main lip to prevent the leakage of lubricants, and the other is the secondary lip to block the entry of external contaminants. TA oil seal is installed with a spring inside, and adopts a double iron shell structure (that is, the outer iron shell wraps the inner shell), such a design increases the outer diameter rigidity of the oil seal, especially for large caliber applications.
TB oil seal: Also designed for two lips, equipped with mounting spring, but unlike TA oil seal, TB oil seal only has a single shell iron shell, no inner shell wrap. Such a structure may not be as rigid as TA oil seals in outer diameter, but may have advantages in applicability and installation flexibility.
Application field:
TA oil seal: Due to its reinforced outer diameter rigid design, it is usually used in applications requiring greater pressure or larger diameter mounting holes, such as large machinery and heavy industry applications.
TB oil seal: It is more widely used in scenarios where the outer diameter rigidity of the oil seal is not particularly high, but also requires effective sealing, such as car wheel bearings, transmissions and other medium-sized to small rotary moving parts.
Performance and adaptability:
Both have limited conditions of use, such as the line speed generally does not exceed 10 m/s, and the operating temperature and pressure have corresponding limits, but the specific parameters may vary according to the manufacturer and design.
To sum up, the main difference between TA and TB oil seals lies in their structural details, especially the housing design, which affects their rigidity, suitability for installation, and final use environment. The selection should be determined according to the specific working conditions, such as the diameter of the shaft, the expected load, speed and working environment.
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