The most fundamental principle of bearing maintenance, that is, prior to installation and installation must be kept clean and bearings. Many factors, such as improper installation methods, dirty hands or tools bronze rolling bearings, contaminated lubricating oil, can cause damage to the bearings. Regardless of how the quality of the bearing or seal these bearings Jiashan factors may cause bearing damage quickly. Bearings must be maintained at all times clean and clean afterwards beforehand to keep clean and simple bearing metal bearing more than double the total bearing more. Many are unable to separate the bearing, this bearing more difficult cleaning jobs. With tolerance and tolerance can be found, with the gap and other information. Install seal seal various installation methods, each vendor a different story, even if the seal nearly identical. But the best way is to do it according to the manufacturer's instructions. If you can not get the installation method, the following we give you some tips in principle. Cold or hot charging means if the bearing outer ring interference fit, usually cold installation method, if the bearing inner ring interference fit, subject to possible cold or hot charging device. Without heating small bearings, hydraulic means or sleeve plus hammer to install. There are many ways of large bearings, grease type, hydraulic or heating and the like.