Performance characteristics of FAG ceramic bearings
FAG bearing ceramic ball bearings can completely cover all current applications of precision, medium-speed and above all-steel bearings. The performance price ratio of imported ceramic bearings of FAG bearings is far superior to that of all-steel bearings. The service life can be increased by more than 3 times compared with the current bearing life, which can save a lot of downtime and maintenance time, reduce the scrap rate, and reduce spare parts in stock.
Compared with the performance of FAG bearing steel, the self-weight is 30%-40% of the bearing steel, which can reduce the increase of the dynamic load and slip due to centrifugal force. Due to its high wear resistance and speed of 1.3-1.5 times that of bearing steel, it can reduce the damage of the channel surface caused by high-speed rotation. The modulus of elasticity is 1.5 times higher than that of bearing steel. The small elasticity of the force can reduce the deformation caused by the high load. Hardness is 1 times that of FAG bearing steel, which reduces wear. The compression resistance is 5-7 times that of FAG imported bearing steel. The coefficient of thermal expansion is less than 20% of the bearing steel. The friction coefficient is less than 30% of the bearing steel, which can reduce the heat generated by the friction and reduce the early peeling failure of the bearing caused by the high temperature. Tensile, bending and metal equivalent.
Rolling bearing heat solution
The shaft parts of the machine tool, especially the main shaft, are generally assembled with rolling or plain bearings and rotate at a high speed, sometimes generating high heat. If this phenomenon is not eliminated in time, it will cause the bearing to overheat and cause the temperature of the corresponding part of the machine tool to rise and cause thermal deformation. In severe cases, the spindle and the tailstock will not be equal, which will not only affect the precision and machining accuracy of the machine itself, but also Burn the bearing.
Causes of rolling bearing heating and its elimination
(1) Reason: Low bearing accuracy
Method: Select the bearing with the specified accuracy level.
(2) Reason: The spindle is bent or the hole of the box is different.
Method: Repair the spindle or cabinet.
(3) Reason: the belt is too tight
Method: Adjust the belt to make it elastic.
(4) Reason: poor lubrication
Method: Select the lubricating material of the specified grade and clean it properly.
(5) Reason: low assembly quality
Method: Improve assembly quality.
(6) Reason: bearing inner casing running circle
Method: Replace the bearing and associated wear parts.
(7) The axial force is too large
Method: Clean and adjust the clearance of the seal ring between 0.2 and 0.3mm, correct the balance of the impeller and verify the static balance.
(8) Bearing damage
Method: Replace the bearing.
订阅：
评论 (Atom)