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Tunnel design
Tunnel design The location and length of the tunnel are selected based on the route standards, terrain, geological conditions, and other factors. Multiple options should be compared for route selection. The setting of auxiliary tunnels and operational ventilation should be considered for long tu...Read more -
Tunnel – Historical Evolution
Since the construction of the 770 meter Taylor Hill single track tunnel and the 2474 meter Victoria double track tunnel on steam locomotive hauled railways in Britain in 1826, numerous railway tunnels have been constructed in countries such as Britain, the United States, and France. In the 19th ...Read more -
The function of oil seals
The function of skeleton oil seal is generally to isolate the parts that need lubrication in the transmission components from the output components, so as not to let lubricating oil leak. It is usually used for rotating shafts and is a type of rotating shaft lip seal. The skeleton is like the st...Read more -
Storage conditions for seals
Seals are widely used in the industrial production industry and require a large amount. Some heavy industry enterprises often reserve commonly used seals to prevent unexpected needs. What are the storage conditions for seals? To better preserve the seals and avoid wear and tear. 1、 Avoid high t...Read more -
Selection of Hydraulic Seal Materials
The most commonly used rubber material for hydraulic seals is nitrile rubber NBR. In addition, when there are special requirements for heat resistance and oil resistance, fluororubber can be used; When there are special requirements for wear resistance and pressure resistance, AU/EU (polyurethan...Read more -
Sealing principle and precautions of oil seals
Due to the presence of an oil film controlled by the oil seal blade between the oil seal and the shaft, this oil film has fluid lubrication properties. Under the action of liquid surface tension, the stiffness of the oil film precisely forms a crescent surface at the contact end between the oil ...Read more -
Failure analysis of rubber seals
There are four common causes of failure for rubber seals: design errors, material selection errors, seal quality issues, and improper use. 1. Design errors are usually caused by designers having insufficient understanding of the product. For example, insufficient estimation of the pressure borne...Read more -
Disassembly and assembly of hydraulic seals
Hydraulic seals are a very important component in hydraulic systems, and their function is to prevent hydraulic oil leakage and external impurities from entering the hydraulic system. The disassembly and assembly of hydraulic seals are very important tasks in the maintenance and repair of hydrau...Read more -
Classification and function of dust rings
Wiper can be divided into lip shaped dust rings, Tekang combination dust rings, and Zokang combination dust rings, among which lip shaped dust rings can be further divided into skeleton lip shaped dust rings and frameless lip shaped dust rings. (1) Skeleton lip shaped dust ring: It uses the inte...Read more -
Analysis of the Sealing Industry
The sealing industry is an important foundational industry widely used in various industrial fields, such as petrochemicals, coal chemicals, engineering machinery, metallurgy, pharmaceuticals, food, textiles, automobiles, household appliances, etc. According to the classification of national eco...Read more -
Shank adapters generally come in two main thread types
Shank adapters typically come in two main thread types: internal and external. Internal thread: A common internal thread type is R25, which has an M16 internal thread. This internal thread adapter is usually used in rock drilling tools that match the drill bit. External thread: Common types of e...Read more -
Drill tail is one of the important parts of hydraulic rock drill
The shank adapter is one of the important parts of the hydraulic rock drill. It is connected to the tail of the rock drill and is used to transmit hydraulic energy and drive the rock drilling tool. The material of the shank adapter is usually alloy steel or carbon steel, which has high strength,...Read more
