The meaning of flanged guard bearing

Bearing outer ring with two gears, and the inner ring no edge. This means that the thrust ( The axial) Under the action of load bearing ring will be separated from each other. However, if the inner ring is equipped with a guard, as shown in figure 1. 37 suggests the bearing under the larger radial load at the same time, also can absorb a certain amount of axial load. Figure 5. 6 shows that this kind of bearing in the fluid of the radial and axial load. The emergence of the axial load will make roller tilt, to balance the axial load load effect and the couple Q violent. h。 Figure 5. 6 shows the roller and raceway contact straight when load distribution non-uniform conditions, from the load distribution can be roller rolling contact load is o = gdu ( 5. 15) Definition is minimum load, maximum load per unit length is q, and ideally uniformly distributed load is q, apparently> 9, and this leads to the increase of contact stress and service life. As often cylindrical roller with a figure of 138 represented by convex degree, so the distribution of the contact zone load in general than in figure 5. 6 said in a smaller ( As shown in figure 5. 7) 。 Book 2 chapter 1 will make a detailed analysis of 5 in this case. 5. 2 rollers skew torque due to sliding between roller ring between the end and the penal, in these areas will produce friction. Assume that each friction force can be simply expressed as Q. Will produce a torque, the friction force, namely, aQ. 4, where 1 is the length (between roller at both ends As shown in figure 5. 8) LAN in figure 5. 7 and the radial and axial load with a load of cylindrical roller D convex degrees to the friction between the straight grain loading at the same time ( Black said set of penal clearance limit line between columns in the direction of the load force of towards book, gray dot roller Angle said toward the book) Book 2 chapter 3 will to detailed analysis of skew roller, but should keep in mind that the role of lead guard is trying to kid oblique, face to do this is to make roller ring between the end and the guard between between the minimization, understands that figure 59 said.