Often, compressors in the refrigeration and air conditioning fields have forced oiling systems. These compressors are usually over 5 horsepower (hp). They contain an oil pump located at the end of the ...

The lubricant in refrigeration and air conditioning systems has many important functions. Even though the circulated refrigerant is the working fluid required for cooling, the lubricant or oil is ...

BestReviews is reader-supported and may earn an affiliate commission. Details. This is an archived article and the information in the article may be outdated. Please look at the time stamp on the ...

Years ago, it was common for shops to have a central power source that drove all the tools through a system of belts, wheels and driveshafts. The power was routed around the work space by mechanical ...