The most common basic design of SKF bearings can be supplied with a dust cover or sealing.Bearings of 32 A and 33 A series filled with high-quality grease NLGI 3 with lithium thickener,and marked with model suffix MT33. This grease has good corrosion resistance,and can be used to minus 30 degrees centigrade to 120 degrees centigrade on the temperature. Base oil viscosity is 98mm2 / secend at 40 degrees Celsius,9.4mm2 / secend at 100 degrees Celsius. The use of 52 and 53 series bearings based on the mineral oil as well as high-temperature grease containing polyurea thickener.The operating temperature of this kind of grease is minus 30 degrees Celsius to 140 degrees. Base oil viscosity is 115mm2 / secend at 40 degrees Celsius, 12mm2 / secend at 100 degrees Celsius.