Miniature Deep Groove Ball Bearings Bearing clearance
High-speed micro-deep groove ball bearing bearing clearance, also known as bearing clearance. The so-called bearing clearance, that is, when the bearing is not installed in the shaft or bearing box, the inner ring or outer ring side fixed, and then the bearing clearance is not fixed side of the radial or axial movement of the amount of movement The According to the direction of movement, can be divided into radial clearance and axial clearance. The size of the clearance (called the working clearance) during operation affects the rolling fatigue life, temperature rise, noise, vibration and other properties of the bearing. We can be cylindrical and oval-shaped pad of the backlash, can be used hand-grinding or bearing in the sub-surface plus matting after grinding method of adjustment. The use of bearings
Precautions for use
Rolling bearings are precision parts, and therefore require a corresponding attitude in use, both the use of high-performance bearings, if used improperly, can not achieve the desired performance results, so the use of bearings should pay attention to the following:
▲, to keep the bearing and its surrounding environment clean. Even if the invisible tiny dust into the bearing, will increase the bearing wear, vibration and noise.
▲, the use of the installation to be careful, do not allow strong stamping, do not allow the hammer directly hit the bearing, does not allow the transfer of pressure through the rolling body.
▲, the use of appropriate and accurate installation tools, try to use special tools, try to avoid the use of cloth and short fiber and the like.
▲, to prevent the corrosion of the bearing, take the bearings directly by hand, to fully wash away the sweat on hand, and coated with high-quality mineral oil and then operate in the rainy season and summer, in particular, should pay attention to rust.
▲, with the choice
The inner diameter and outer diameter dimensions of the rolling bearing are made according to the standard tolerances. The tightening degree of the bearing inner ring and the shaft, outer ring and the seat hole can only be achieved by controlling the tolerance of the journal and the tolerance of the hole. Bearing the inner ring and the shaft with the base hole system, bearing outer ring and seat with the use of machine shaft system.
Correct choice of cooperation, we must know the actual load conditions, operating temperature and other requirements, but in fact it is very difficult. Therefore, most cases are based on the use of lapping selection.
▲, load size
The amount of interference between the ring and the shaft or the shell depends on the size of the load, the heavier load uses a larger win, and the lighter load uses a smaller win.