How to choose lubrication oil for gears?

It's important to choose proper lubrication oil for gear. Generally, several factors should be taken for consideration. First, you should be clear about what kind of oil is better . There are many kinds of lubrication oil, such as pen-die gearoil, closed gearoil, worm oil etc. Second, it depends on the pressure of bore by the gear, then such oil may be suitable for you, such as antioxidizing antirust gearoil, the load industrial gear oil etc. In addition, other factors such as gear linear velocity and using temperature should also be considered.