The performance and usage of rolling bearing

Deep groove ball bearing is the most commonly used rolling bearing. It has simple structure, easy to use. Is mainly used to bear radial load, but when increasing the bearing radial clearance, has certain properties of Angle contact ball bearing, joint can withstand diameter and axial load. In high speed and should not be using thrust ball bearing, could also be used to carry pure axial load. Compared with the same size of other types of bearings, such bearing small friction coefficient, high limit speed. But don't impact resistance is not suitable to carry heavy load. Deep groove ball bearings mounted on a shaft, within the scope of the axial clearance of bearing, can limit shaft or the shell axial displacement in two directions, so can in two-way axial positioning. In addition, this class also has a certain bearing capacity, when compared with the shell hole '2 ~ 10', can still work normally, but had certain influence on bearing life. 'Rolling bearings' the most representative of the rolling bearing, wide range of USES, can bear radial load and two-way axial load. Is suitable for high speed rotation and requiring low noise, low vibration zone plate dust cover or rubber sealing ring seal type bearing inner packing in advance the right amount of grease, outer ring snap ring or flange bearing, namely axial positioning, easy and convenient for the installation of the shell. The size of the largest duty bearing the same as the standard bearing, but the inner and outer circle have a filling slot, increase the count, raise the rated load. 'Spherical roller bearings' in these bearings are of spherical raceway outer ring and double groove between the inner ring is equipped with spherical roller, according to the different internal structure, divided into R, RH, RHA and SR four types. Because of outer ring raceway arc center and bearing center consistent, with self-aligning performance, thus can be automatically adjusted because of the shaft or shell buckling or axis deviation caused by different heart. Can bear radial load and two-way axial load. Large radial load capacity, in particular, apply to under heavy load and impact load. Cone bearing by using fasteners or withdrawal can make the installation on the shaft. Spherical roller bearings can withstand larger radial load, at the same time also can absorb a certain amount of axial load. The bearing outer ring raceway is spherical shape, so has a self-aligning performance, when the axial stress bending or leaning and make the center line of the center line of the inner ring and outer ring relative tilt is not more than 1 ° ~ 2. 5 °, the bearing can still work. 'Needle roller bearing' entity type needle roller bearings with inner ring bearing the basic structure of the same as the NU type cylindrical roller bearing, but as a result of the needle, the volume can be narrowed, and can withstand the big radial direction load bearing inner ring has the right to the accuracy and the installation of the axis of the surface as a raceway surface hardness. 'Joint bearing' joint bearing lubrication and self-lubrication. Joint bearing is a kind of special structure of the sliding bearing. Its structure than the rolling bearing is simple, it is mainly composed of one inside a spherical outer ring, can bear larger load, according to a spherical inner ring and its different types and structure, can bear radial load, axial load or the joint of the radial, axial load. The motion of the commonly used for low speed movement, The horn shape, can tilt in certain Angle range for movement, The heart movement) , due to the sliding surface is spherical move) In supporting shaft and shaft shell hole concentricity is bigger, can still work normally. 'Linear bearing' linear ball bearings mainly use straight line reciprocating movement of the parts in the mechanical equipment, has a small friction, flexible movement, convenient and repair replacement. It is widely used in textile machinery, printing machinery, pharmaceutical machinery, precision machine tools, electric cutting machine and automatic recorder, etc. 'Pressure bearing' separated type pressure bearing is a bearing, according to its structure is divided into one-way pressure ball and two-way pressure ball bearings. One-way pressure bearing can withstand axial load in one direction, two-way pressure bearing can withstand axial load in two directions. They are unable to bear radial load. 'Thrust roller bearing thrust roller bearings include thrust spherical roller bearings, thrust cylindrical roller bearings, thrust taper roller bearings. Thrust spherical roller bearings can withstand the axial and radial load at the same time, but the radial load shall not exceed 55% of the axial load. This type of bearings from another important characteristic is with automatic self-aligning properties, thus make it not concentricity and deflection is not very sensitive. As long as the load P and P. No more than 0. 5 c, and axial rotation, allows a range of bearing Angle. Small value is suitable for large bearing, and when the load increases to allow self-aligning Angle will decrease.