Oiling of the metering pump bearing housing

Mobil 600XP220 gear oil is a high-performance gear oil with excellent extreme pressure properties and load-carrying capacity; it is suitable for all enclosed gears that are lubricated by circulation or splashing. This series of products is formulated using highly refined base oils along with special additives for antioxidant and anti-degradation properties. It has the property of reducing friction, which enables lower power consumption and a decrease in overall oil temperature. Shell Gear Oil 600 series prevents corrosion and rusting (including in seawater). It has excellent water-repelling properties and strong antifoaming ability during use. 　　Features ； 　　It boasts excellent load-bearing capacity and reduces wear on the tooth surfaces. 　　Outstanding antioxidant and anti-degradation properties. 　　It has a wide range of applications. 　　It has excellent rust and corrosion resistance for steel, as well as good corrosion resistance for copper and soft alloys. 　　It exhibits excellent anti-emulsification and anti-foaming properties. 　　Application ； 　　Gear units for industrial conveyors, mixers, dryers, extruders, blowers, mixers, presses, pulping machines, pumps (including oil well pumps), screening machines, and other heavy-duty machinery applications. 　　Marine gear rotating devices, including main propellers, centrifuges, deck machinery such as winches, anchor winches, cranes, rotating devices, pumps, elevators, and rudder supports. 　　Applications other than gear rotation include couplings, propellers, and sliding and rolling bearings for low-speed, high-load conditions. 80W-90 is a gear oil for car transmissions, primarily designed for use in winter; it can be used in environments as low as minus 30 degrees Celsius. If there really is none and it must be replaced, mixing oils is absolutely not allowed. First, drain the existing gear oil and rinse it with diesel, then let it dry. After that, flush it once with a small amount of 80W-90 before adding new gear oil.

If lubricant needs to be replaced, it can only be upgraded from a lower-grade version to a higher-grade one; it cannot be downgraded. Therefore, it is necessary to analyze and compare the specifications of the two current lubricants. Additionally, after replacement, the new lubricant must be used to completely clean the gearbox; in other words, lubricants cannot be mixed with each other. It’s similar to using pens when we were kids – inks cannot be mixed, otherwise a gelatinous substance will form.

For metering pumps, we use ordinary lubricating oil, type 46 lubricant.

Yes, the viscosity of automotive gear oil 80W-90 at 40 degrees is around 130, which is not very different from the viscosity of gear oil grade 150. For new devices, it’s no problem to add them directly.