Bearing with the role is the rolling bearing the geostationary ring and rotating ring respectively and still part of installation (usually bearing) and a rotating part (usually the axis) together consolidation, thus achieving in the rotating load transfer and limited movement relative to the basic task of the stationary system.
On the shaft and the bearing seat, rolling bearing is fixed on the radial, axial and tangential direction three position. Hengding hub said radial and positioning to cut through a tight fit to IKO bearing ring 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.
Hendin hub should focus on remind choose with 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 give full play to the bearing load capacity.
(2) rings in their mating surfaces cannot slide along the tangent, otherwise it will damage the mating surfaces.
(3) the free end bearing must adapt to changes in the length of the shaft and the bearing seat hole, which must have the ability to adapt to the axial position within a certain range of swimming.
(4) must pay attention to the bearing installation and removal easy, saving time and labor costs.
Allowed speed according to the type of rolling bearing size, precision, cage type, load, lubrication, and cooling factors to determine. The bearing table lists the standard precision bearings in lubricating oil and grease lubrication allows speed. Usually, deep groove ball bearings, self-aligning ball bearings and cylindrical roller bearings are suitable for high speed operation.
Precision bearing size and rotation accuracy is based on the ISO and JIS standard. Requirements for high precision and high-speed operation of the machinery, it is recommended grade 5 or above precision bearing, deep groove ball bearing, a centripetal thrust ball bearings or cylindrical roller bearing is applicable to high running accuracy of mechanical. Rigid, when the roller and raceway contact surface pressure of IKO bearings, will produce elastic deformation. Some machines need to keep to a minimum the elastic deformation. Roller bearings than ball bearing elastic deformation is small.
In addition, the rolling bearing in some cases to exert preloading to increase rigidity. Hengding hub says this program is usually used for deep groove ball bearing, a centripetal thrust ball bearings and tapered roller bearing inner ring and the outer ring of bias, bent shaft, shaft or bearing box tolerance variations, combined with errors will lead to the eccentricity of the inner and outer rings. In order to prevent the eccentric angle is too large, the automatic ball bearing, self-aligning roller bearing adjustable bearing seat is better choice. Voice frequency and torque, rolling bearings are based on a high standard of precision manufacturing, so the noise and small torque. Deep groove ball bearings and cylindrical roller bearings used for low voice, low torque occasions with special requirements.
