Deep groove ball bearing material in a large extent determines the service life of the bearing, once the metallurgical quality of bearing steel GCr15 is caused by the rolling bearing early failure is the main reason. After a substantial increase in metallurgical technology, bearing steel and other materials have emerged, has been greatly improved.
In the bearing failure analysis, caused by raw materials bearing failure ratio has also been greatly improved, but the manufacturing material is still the main cause of the bearing failure, considerable more and deep groove ball bearing service life. Bearing manufacturing process complex, to go through multi-channel processes can be finished, the forging, heat treatment, machining and grinding process of technological capability and quality will affect the bearing service life and application effect, especially heat treatment and grinding process, is the direct cause of a lot of bearing failure, the need to get production enterprises attach great importance to.
After the installation of deep groove ball bearing, in order to check the installation is not correct, to running inspection. Small machinery can be rotated by hand to determine whether the rotation is smooth. Check the project mainly due to a foreign body, indentation caused by poor functioning, due to poor installation, installation seat processing bad moment instability, caused because the clearance is too small, installation error, seal friction torque and so on. If there is no exception, you can start a dynamic operation.
In the shaft and bearing seat, the bearing requirements in the radial, axial and tangential direction, such as the three fixed position. Radial and positioning to cut through the tight fit of the bearing rings realize pick, axial position only in a few cases the tight fit; generally use the axial spacing parts, such as the end cover and a retainer ring, etc. the axial position defined in the context of clearance.
Choose to pay attention to the following four points:
(1) the circumferential surface of bearing rings should have good support and uniform force, in order to reduce the distortion, and can give full play to the bearing capacity.
(2) rings in their mating surfaces cannot slide along the tangent, otherwise it will damage the mating surfaces.
(3) free end bearings must be able to adapt to changes in the length of the shaft and the hole of the bearing seat, which must have the ability to adapt to the axial position in a certain range.
(4) must pay attention to the deep groove ball bearing installation and removal easy, saving time and labor costs.