Clearance of the roller seal; When the roller seal is not installed on the shaft or roller seal box; Fix one side of its inner or outer ring; Then the amount of movement when the unfixed side moves radially or axially, based on the direction of movement; It can be divided into radial clearance and axial clearance
The size of the work gap (referred to as the work gap) during operation has an impact on the rolling fatigue life, temperature rise, noise, oscillation and other functions of the roller seal
When measuring the clearance of the roller seal; To obtain a stable measurement value; Usually, a regular measuring load is applied to the sealing element of the roller
Therefore; The measured value obtained is larger than the actual clearance (referred to as the theoretical clearance); This increases the elastic deformation caused by the measured load
但關于滾子托輥密封件來說型線 流水槽模具 景觀石 檢查井鋼模具 保定通風管道 隔離墩模具 保定保潔公司；因為該彈性變形量較.裝置前托輥密封件的內部游隙通常用理論游隙表明.
But regarding the roller carrier roller seal; Because the elastic deformation is relatively large, the internal clearance of the front roller seal of the device is usually indicated by theoretical clearance
Selection of Clearance for Roller Seals
The theoretical clearance minus the large or shortened clearance of the ring caused by interference cooperation when the roller seal device is on the shaft or inside the casing is called the "device clearance"
The clearance caused by adding or subtracting the scale change caused by the internal temperature difference of the carrier roller seal on the device clearance is called "useful clearance"
The roller sealing device has clearance when mechanically placed under a certain load; The effective clearance plus the elastic deformation caused by the load on the roller seal is called the "working clearance"
When the job clearance is slightly negative; The fatigue life of the roller seal is the longest, but with the increase of negative clearance, the fatigue life also decreases significantly. Therefore; When selecting the clearance of the roller seal; It is usually advisable to set the work clearance to zero or slightly positive
other; When it is necessary to improve the rigidity of the roller seal or reduce noise; Further negative values should be taken for homework clearance; When the temperature rise of the roller seal is severe; The work gap needs to be further taken as a positive value, etc; The sealing components of the roller must also be analyzed specifically based on the application conditions