Deep groove ball bearings are a widely used type of bearing that can withstand radial and axial loads, and have the characteristics of low friction, high speed, and simple structure. The following is the usage method of deep groove ball bearings:
1、 Installation method
There are two main installation methods for deep groove ball bearings: press fit and heat fit.
Press fit:
When the inner ring of the bearing is tightly fitted with the shaft and the outer ring is loosely fitted with the bearing seat hole, a press machine can be used to press the bearing onto the shaft first, and then the shaft and bearing can be installed into the bearing seat hole together. During press fitting, place a soft metal material assembly sleeve (copper or soft steel) on the inner ring end face of the bearing.
When the outer ring of the bearing is tightly fitted with the bearing seat hole and the inner ring is loosely fitted with the shaft, the bearing can be pressed into the bearing seat hole first. At this time, the outer diameter of the assembly sleeve should be slightly smaller than the diameter of the seat hole.
If the bearing ring is tightly fitted with the shaft and seat hole, both the inner and outer rings of the installation chamber should be pressed into the shaft and seat hole at the same time, and the structure of the assembly sleeve should be able to simultaneously press the end faces of the bearing inner and outer rings.
Heating coordination:
Heating bearings or bearing seats and using thermal expansion to convert tight fit into loose fit is a commonly used and labor-saving installation method.
This method is suitable for the installation of bearings with large interference fit. Before hot installation, place the bearing or separable bearing ring into the oil tank and heat it evenly to 80-100 ℃, then remove it from the oil and install it on the shaft as soon as possible. To prevent the inner ring end face from not fitting tightly with the shaft shoulder after cooling, the bearing can be tightened axially after cooling.
When the outer ring of the bearing is tightly matched with the light metal bearing seat, the hot installation method of heating the bearing seat can avoid scratching the mating surface.
When using a fuel tank to heat bearings, there should be a mesh grid at a certain distance from the bottom of the tank, or the bearings should be hung with hooks. The bearings should not be placed on the bottom of the tank to prevent impurities from entering the bearings or uneven heating. There must be a thermometer in the fuel tank, and the oil temperature must be strictly controlled not to exceed 100 ℃ to prevent tempering effect and reduce the hardness of the ring.
2、 Precautions for use
Maintain cleanliness: Regularly clean the bearings and their surrounding environment to prevent dust, dirt, and other impurities from entering the interior of the bearings, in order to reduce wear and extend their service life.
Lubrication and maintenance: Select appropriate lubricating grease or oil for lubrication according to working conditions and requirements. Regularly check the lubrication condition to ensure the addition and replacement of lubricants, in order to maintain good lubrication of the bearings.
Sealing protection: Pay attention to checking the sealing device of the bearing to ensure its effective operation and prevent external pollutants from entering the interior of the bearing.
Regular inspection: Regularly check the operation status of bearings, including temperature, noise, vibration, etc., and promptly detect and handle abnormal problems.
Avoid overload operation: Avoid using bearings under overload and ensure that they operate within the rated load range to extend the service life of the bearings.
3、 Application Fields
Deep groove ball bearings are widely used in various light and heavy industrial equipment, such as gearboxes, instruments, motors, household appliances, internal combustion engines, transportation vehicles, agricultural machinery, construction machinery, engineering machinery, roller skates, yo yo balls, etc.
In summary, the usage methods of deep groove ball bearings include correct installation methods, usage precautions, and application areas. During use, relevant regulations and requirements should be strictly followed to ensure that the bearings can be installed correctly and operate stably.