Self-aligning roller bearing positioning and installation

Self-aligning roller bearing location and installation of the bearing is a one or a few raceway of thrust roller bearing ring parts. Fixed end bearing is used to withstand the joint ( The radial and axial) Radial bearing load. These bearings include deep groove ball bearing, double row or matching single row angular contact ball bearings, self-aligning ball bearing, spherical roller bearings, with groups of tapered roller bearings, NUP type cylindrical roller bearings or circle with HJ Angle of NJ type cylindrical roller bearing. In addition, the fixed end bearing configuration can contain a combination of two bearings: 1, the radial bearing can bear radial load, such as one of the cylindrical roller bearing ring without guard. 2, provide axial positioning bearing, such as deep groove ball bearing, four-point contact ball bearing or two-way thrust bearing. Be axial positioning bearing can never be radial orientation, usually installed on the bearing seat with smaller radial clearance. Bearing manufacturer to remind: there are two ways to adapt to the floating bearing axial thermal displacement. First to use a only can bear radial load and the allowable bearing axial displacement occurs in the inside of the bearing. These bearings include: CARB toroidal roller bearings, needle roller bearing, and a ring without a guard of cylindrical roller bearing. Another method is to use a when installed on the bearing seat with a smaller radial bearing radial clearance, so that the outer ring is free to the earth's axis to mobile. 1, lock nut positioning method: USES the interference fit of bearing inner ring installation, often make the inner ring on a shaft shoulder, on the other side is generally use a lock nut ( KMT or KMTA series) Fixed. With taper hole of the bearing installed directly on the cone axis neck, usually with a lock nut is fixed on the shaft. 2, spacer positioning method: between the bearing ring or between the bearing ring and adjacent parts adopt spacer or baffle, instead of whole shoulder or bearing shoulder, it is very convenient. In these cases, the size and shape tolerance can also be applied to relevant parts. 3, ladder shaft sleeve positioning: another bearing axial positioning method is to use ladder shaft sleeve. The collar is especially suitable for precision bearing configuration, compared with the threaded lock nut, beating its smaller, provide higher accuracy. Ladder shaft sleeve is usually used in ultra high speed spindle, for this kind of spindle, the traditional locking device are unable to offer the enough precision. 4, the fixed end cover localization method: wafangdian bearing using interference fit of bearing outer ring is installed, usually make on one side of the outer ring by the shoulder, on the bearing with a fixed end cover is fixed on the other side. Fixed end cover and the fixed screw in some cases have a negative impact on bearing shape and performance. If the wall thickness between the bearing and the screw hole is too small, or screw fastening too tight, outer ring raceway may be out of shape. The lightest ISO size 19 series more than 10 or more series easily affected by such damage.