Plastic Proccssing and Forming
The Plastics industry is dominated by two major categories. In an extruder the processed plastic is pressed thru a nozzle into a profiled die. The extruder gearbox is subject to high torques as well as high radial and axial loads. Injection molding machines are used for the production of parts in large quantities. The screw feed and the linear bearings must be insensitive to heat and vibration and have high basic static and dynamic load ratings.
Oil seal is the customary name for general seals, which is simply the seal of lubricating oil. It is a mechanical component used to seal grease (oil is the most common liquid substance in the transmission system, and also refers to the general liquid substance). It isolates the parts that need to be lubricated in the transmission parts from the output parts, and does not allow lubrication Oil leaks. Static seals and dynamic seals (generally reciprocating) use seals called oil seals.