When installing bearings do not directly hammer bearing end face and the bearing surface, should be to press, sleeve or other installation tools for uniform bearing force, not through the rolling element power installation. If the installation surface coated with lubricating oil, will make the installation more smoothly. If the interference fit is larger, should put the bearing into the mineral oil in installation as soon as possible after heating to 80 ~ 90 ℃, strictly control the oil temperature does not exceed 100 ℃, in order to prevent the effect of tempering hardness decrease and recovery effect size. When removing difficulties, it is recommended that you use disassembly tool to pull at the same time to careful labor the inner ring of hot oil, heat can make the bearing inner ring expansion, making it easier to fall off.
Not all require the smallest bearing clearance work, you must choose appropriate clearance according to conditions. Gb 4604-93, the rolling bearing radial clearance is divided into five groups – 2, 0, 3, 4, 5 groups, clearance values in sequence from small to large, including standard clearance for 0 group. Basic radial clearance group applicable to the general operation conditions, the conventional temperature and the range of the commonly used; In the high temperature, high speed, low noise, low friction bearing special conditions such as work, appropriate chooses big radial clearance; For precision spindle, spindle bearing, and other appropriate chooses smaller radial clearance; For roller bearing clearance can keep a small amount of work. In addition, the separation type of bearing is not clearance; In the end, the bearing capacity after work clearance, than the original clearance before the installation is small, because bearings will absorb a certain amount of load, and bearing fit and load produced by the elastic deformation.
For embedded sealed bearing seal defects, in the process of adjustment, there are two steps need to be strict.
1. Mosaic sealed bearing cover on both sides of structure to the bearing, bearing installation structure adjustment from the device, do not need to direct contact with the bearing, bearing from bearing external dustproof. This structure sealing effect than bearing agent for the sale of bearing seal itself, direct route, block the invasion of the particulate matter to ensure that the clean inside the bearing. This increases the heat dissipation space bearing structure, the fatigue properties of the bearing damage.
2. Bearing outer seal way although the sealing effect is good, but the cooling path is block, so need to install the cooling unit. Cooling device can reduce the operating temperature of lubricant, cooled by natural cooling, can avoid the high temperature of bearing operation.