What are the types of slide bearing oil seals?

A slide bearing oil seal is an important component of a sliding bearing. It prevents lubricant from leaking out while allowing a small amount of physical access of small contaminants. There are two primary types of seals: contact and non-contact. Contact seals have advantages over non-contact seals in terms of friction and heating.

Splash rings
Splash rings are often used to protect the oil seal on slide bearings. They provide protection against oil splash and contamination and reduce friction by reducing oil egress. Splash rings must be properly lubricated to ensure proper functioning. Metallic seals are best suited for vertical up applications.

Various types of V-rings are available. These rings can be used as primary or backup seals. They are available in various sizes and shapes, and they are normally made from Nitrile rubber. This material is able to work at high temperatures while minimising friction.

Flinger shields
Flinger shields for slide bearings are made from plastic or metal and are fixed to the outer race of the bearing. They help in retaining grease and lubrication and protect the inner race from contamination. Shields can handle a higher speed and torque than seals but have a low sealing efficiency. A seal also provides better protection against moisture.

Labyrinth-design isolators
Labyrinth-design isolation is a vital factor in preventing lubrication leaks. The rotating labyrinth seals, also called bearing protectors, reduce the pressure-related alternating flow of contaminated ambient air. They work by creating inherent clearances between the stationary and rotating parts of the seal. A large air gap separates the stationary and rotating components. It also prevents contamination from entering the seal assembly and causing lubrication leakage.

Contacting isolators
Contacting isolators for slide bearings can be installed with or without an oil seal. The type of lubrication required varies from bearing to bearing. The non-contact type is preferred for applications where lubrication is minimal. The contacting type is designed to provide a positive seal while the non-contact type relies on close clearances between the stationary and rotating component. Both technologies are ideal for horizontal equipment shaft applications.

Contacting isolators for slide bearings have various benefits, such as longer service life and reduced maintenance. They also eliminate the need for shaft hardening or coating and can be used in dry conditions. In addition, these seals are manufactured and delivered rapidly, reducing downtime.

Rubber-covered seals
A typical slide bearing oil seal is made from rubber. It is often a U-shaped design. It is typically made from Viton Rubber Material or Nitrile. The lip of the seal may be single or double. A wide variety of different types of oil seals are available.

Generally, two kinds of seals are used for slide bearing oil. They are contact seals and non-contact seals. The two types of seals have different functions. The sealing of the bearing position is very important for bearing life.

Floating ring seals
Floating ring seals for slide bear bearing oil seals overcome some of the challenges of fixed bushings, such as shaft runout and misalignment. They offer close tolerances and eliminate the risk of heavy-loaded metal-to-metal contact. In addition, they don't require lubrication or maintenance.

One benefit of floating ring seals is their ability to prevent leakage in a wide variety of operating conditions, including hot oil and gas. They can be used for high-pressure applications and are less complex to install than face-type seals. They are also smaller, compact and easy to install.