Carry penal miniature bearing is introduced

The distance between the lead guard on a ring, that is the total length of the roller. Mentioned in chapter 1 and will be discussed in subsequent chapters of the inner and outer ring with two guide penal centripetal cylindrical roller bearing, in addition to subject to diameter load, can also carry a lighter thrust load. Bearing the axial clearance will affect the radial loading and at the same time the number of roller thrust load. The axial clearance will also affect the bearing of skew Angle may be produced during operation. 2. 4. Curvature 2 in order to avoid the edge stress concentration effect under the load, most of the cylindrical roller bearing are adopted with crown of roller. This will be book of the first volume of chapter 6 and the second volume of discussed in chapter 1. For this kind of roller, even in figure 2. 11 inner ring with two whole guard, as shown in figure 1. 38 a shows all convex roller, its crown or outline the radius R of outer ring also guard and a separation of a whole is very big. In addition, even race can also be a crown, but R = R, guard centripetal roller bearing R = type, ->. Given the description of internal and external raceway curvature with type of contact ( 2. 37) Type ( 2. 39) The reciprocal of the radius of the difference basically is zero, so 12 2 p ( 2. 42) 12 D p。 Dli + y ( 2. 43) See type ( 2. 38) Type ( 2. 40) , it can be seen that F ( p) ＝F( p) 。 = 1. 2. Taper roller bearing 2 5. 5. 1 pitch diameter pitch diameter of tapered roller bearing and other types of roller bearings are distinguished. For example, in figure 2. 12 you can see, the bearing operation related to the inner ring pitch circle. Can use type ( 2. 1) To represent the inner ring of the average diameter, in a lot of calculation, the average diameter of inner ring will be bearing the pitch diameter of d. Figure 2. 13 is said to analyze performance of tapered roller bearing must be used when the size and Angle. Can be seen from the diagram, play in a way the child contact Angle 4 = ( Inner ring wrapping Angle) ; Outer raceway roller contact Angle. = ! ( Outer wrapping Angle) : roller large end rim contact Angle a = ( After the inner ring end face gear edge horn) ; And a. Is child wrapping Angle. D。 Is child big end diameter, D. Is a small end diameter roller, size between end face length is 4. 2. 5. 2 child bearing axial clearance cone fluid is usually installed in pairs. In general, to eliminate the clearance can be achieved when no load line to line matching. For actual role bear radial load bearing, it is possible; Assembly time at room temperature, however, to retain a small amount of axial clearance, so that the tapered roller run at higher temperatures can reach desired load distribution.