Lip seal

NBRV-ringhousing

The oil seal end cover is a common but important component in mechanical systems. It is usually used in conjunction with oil seals (such as V-rings, skeleton oil seals, etc.) to provide sealing surfaces and support structures. The following is a complete introduction to "oil seal end covers", which is suitable for design, maintenance or selection scenarios: The oil seal end cover is a cover installed on the equipment housing or bearing seat. Its main functions are: Fix and support the oil seal (such as skeleton oil seal or V-ring); Provide a sealing contact surface to fit the oil seal lip; Prevent lubricating oil leakage and external impurities from entering the bearing cavity. Detailed explanation of structure and function 1. Matching method with oil seal For skeleton oil seal: The oil seal is installed in the oil seal hole of the end cover, and the outer diameter is pressed in the end cover; When the shaft rotates, the inner lip of the oil seal fits on the shaft surface to achieve radial sealing. For V-ring: The V-ring is installed on the shaft, and the lip contacts the outer surface of the end cover to achieve axial sealing; At this time, the end cover provides a static and smooth sealing contact surface. 2. Additional functions (depending on the structure) Dustproof retaining ring function Provide lubricating oil return groove Support bearing seat (in the end cover structure with bearing) Precautions for end cover design (when matching with oil seal) The contact surface should be smooth and scratch-free (Ra ≤ 0.8 μm);