German EagleBurgmann seals, EagleBurgmann models, EagleBurgmann prices

EagleBurgmann seals are a common term for general seals, simply referring to lubricating oil seals. They are mechanical components used to seal grease (oil is the most common liquid substance in transmission systems, and also refers to general liquid substances), isolating the parts requiring lubrication in the transmission components from the output parts to prevent lubricating oil leakage. Seals used for static sealing and dynamic sealing (generally reciprocating motion) are called oil seals. The representative form of oil seals is the TC oil seal, which is a double-lip oil seal with a self-tightening spring fully covered by rubber; the term oil seal often refers to this type of tc skeleton oil seal.

EagleBurgmann seal principle

Since there is an oil film controlled by the oil seal lip between the oil seal and the shaft, this oil film has fluid lubrication characteristics. Under the action of liquid surface tension, the stiffness of the oil film causes the end of the oil film in contact with air to form a meniscus, preventing the leakage of the working medium and thus achieving the sealing of the rotating shaft. The sealing capability of the oil seal depends on the thickness of the oil film on the sealing surface; if the thickness is too large, the oil seal will leak; if the thickness is too small, dry friction may occur, causing wear on the oil seal and the shaft; if there is no oil film between the sealing lip and the shaft, it is easy to cause heating and wear. Therefore, during installation, some oil must be applied to the sealing ring, and it must be ensured that the skeleton oil seal is perpendicular to the shaft axis; if not perpendicular, the sealing lip of the oil seal will drain the lubricating oil from the shaft, which will also lead to excessive wear of the sealing lip. During operation, it is ideal for a slight amount of lubricant in the housing to seep out slightly to achieve the state of forming an oil film at the sealing surface.

EagleBurgmann seal applications

Skeleton oil seals are widely used in aviation, automotive, motorcycle, railway, vehicle, ship, home appliance, construction machinery and other industries. Suitable for sealing rotary and reciprocating motions. Installed in various heavy-duty engines, gearboxes, axles, ships, cylinders and other parts. Mainly prevents the penetration of sealed media (gas, liquid) and the entry of external foreign matter into the body. Precautions: The pressure bearing range of ordinary oil seals is very limited, generally 0.03 MPa. This pressure is generally formed by the height difference of the lubricating oil itself. If higher pressure needs to be sealed, high-pressure oil seals should be selected (generally capable of withstanding up to 1 MPa pressure) or other sealing forms should be selected.

EagleBurgmann seal FAQs

Preventing leakage through sealing is a perpetual pursuit for chemical equipment, and this requirement has driven the increasingly widespread adoption of magnetic drive pumps and canned motor pumps. However, there is still a long way to go to truly achieve zero leakage, such as the service life issues of isolation cans in magnetic drive pumps and shielding cans in canned motor pumps, pitting corrosion of materials, the need for sealing materials with good corrosion resistance, and the reliability of static seals. The following is a brief introduction to the basic conditions regarding sealing: 1. Sealing types For static seals, there are usually only two types: gaskets and O-rings, with O rings being the most widely used; for dynamic seals, chemical pumps rarely use packing seals, relying mainly on mechanical seals. Mechanical seals are classified into single-face and double-face, as well as balanced and unbalanced types. Balanced types are suitable for sealing high-pressure media (typically referring to pressures greater than 1.0MPa), while double-face mechanical seals are mainly used for media that are high-temperature, prone to crystallization, viscous, contain particles, or are toxic and volatile. For double-face mechanical seals, a barrier fluid should be injected into the seal chamber, with its pressure generally 0.07 to 0.1MPa higher than the media pressure. 2. Sealing materials For static seals in chemical pumps, fluororubber is generally used, with PTFE materials adopted only in special cases; the material configuration of the rotating and stationary rings in mechanical seals is critical. It is not necessarily best to pair cemented carbide with cemented carbide; high cost is one factor, and it is also unreasonable if there is no hardness difference between the two. Therefore, it is best to handle them differently according to the characteristics of the medium (Note: The American Petroleum Institute API610 Eighth Edition provides relatively detailed provisions for typical configurations of mechanical seals and piping systems in Appendix D).

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