Developed on the basis of the sliding NSK bearings NSK bearings rolling, its working principle is based on rolling friction instead of sliding friction, generally by two ring, a set of rolling elements and a cage of strong commonality, a high degree of standardization, seriation of mechanical components. Because of various machinery has different working conditions, NSK bearings for rolling in the load capacity, structure, and puts forward various requirements in such aspects as the use of performance. To this end, NSK bearings rolling all kinds of SKF 6005 Bearing http://www.bearing-sa.com/product/SKF-6005-Bearing-153087.html structure. However, the most basic structure is composed of inner ring and outer ring, rolling element and cage.
All kinds of parts in the role of NSK bearings are:
For NSK bearings to the heart, inner ring and shaft tight fit, and with the shaft running, NSK bearing outer ring and usually or mechanical shell blastholes transition fit, the supporting role. However, in some cases, also have outer ring, inner ring fixed supporting role or inner ring and outer ring are running at the same time. For NSK bearings, thrust and shaft tight said shaft and joined the sports circle, cooperate with transition of NSK bearing or mechanical shell blastholes said seat and a supporting role. (ball, roller, or needle roller) within the NSK bearings usually use cage evenly arranged between the two ring rolling movement, it directly influences the shape, size and number of NSK bearing load capacity and performance. Cage outside roller can be evenly separated, also can guide roller rotating NSK bearings and improve the internal lubrication performance, and so on.
Imported bearing in the pump maintenance methods:
(1) the new pump put into use, must be replaced after running 100 hours grease (oil), replace 1 after every run of 500 hours.
(2) the flow of bearing is lubricated by grease, run after 1500 hours, should be replaced, grease filling the oil amount is too little or too much, because too much or too little will cause bearing grease fever, amount to general in the bearing should be 1/2 to 2/3 of the chamber volume.
(3) for imported bearings used lubricating oil, oil should be added to the specified location.
(4) containers of lubricating oil or grease to clean, should be sealed at ordinary times, should not have dust, iron and other sundry, in order to avoid damage to the bearings.
(5) the motor bearings commonly used sodium base grease, the grease is characteristic of high temperature (125 ℃), but easy to dissolve in the water, so can't use it for water pump bearing lubrication.