By . Air Compressor. At Sunday, September 09th 2018, 06:47:01 AM.
All reciprocating air compressors throw out some oil with the air they compress. When the tank reaches its designed pressure limit, a switch will interrupt electrical power to the motor. Simultaneously, a certain amount of oily air will be released into the shop environment. You may see oil collecting on the wall behind the compressor and on the pump and compressor as well over time. This is not cause for alarm but periodic cleaning may be needed.
An oil lubed pump has a longer life with less wear than an oil free air compressor. These also come in various sizes and are great for home use.
For the people who want a more powerful model, there is Westward 4B220 portable air compressor. This machine uses a powerful Briggs engine. Its powered by a powerful 5.5 HP motor. The machine uses a 2 cylinder pump made of cast iron. It has a horizontally placed tank which has a rated capacity of 20 gallons. It uses a four cycle aluminum block engine. The machine has 21 oz engine oil capacity and 12 oz of compressor pump oil. The machine uses a time tested reliable type H tank which makes it one of the longest performing and most reliable machines that you can buy.