Features FAG crossed roller bearings have high rigidity, and the running accuracy is better than P4. The other accuracy is P5, and with preload. The outer ring of the bearing can be easily fixed in the surrounding structure with the gland. The internal structure of the crossed roller bearing introduced here is very suitable for high-speed working conditions and is suitable for vertical hexagonal lathes. Compared with the TPI120, the high-precision bearing with combined load, the crossed roller bearing of the same size has a higher dynamic load rating. Since there are fewer rollers, the rigidity is relatively reduced. These guidelines and data are mainly for the crossed roller bearings in the list. The outer ring rotates when the bearing is working. For bearing axial loads and radial loads and moments Because the cylindrical rollers are arranged in an O-type, the bearings can withstand axial and radial loads, overturning moments and other combined loads, but only occupy the space of a bearing. The design of the two bearing arrangement can therefore be replaced by a single bearing arrangement, as shown in Figures 1 and 2. Fa u003d Axial load Fr u003d Radial load Mk u003d Overturning moment Figure 1 Arrangement of two bearings 00017B7C Crossed roller bearing Figure 2 Arrangement with only one crossed roller bearing. THK Crossed Roller Bearing Limiting Speed u200bu200bThe limiting speed of the bearing is determined by the lubrication method of the bearing (grease and oil), please refer to the dimension table. If other limiting speeds are required, please contact the Schaeffler Group Engineering Services. Preload For the INA crossed roller bearing Z-556, the preload of the bearing has been set in the production factory, and the bearing ring is fixed by the end cover and bolt. For cross-rolled seed bearing Z-549, the actual height record table of the bearing inner ring is included with the bearing. The required preload is achieved by adjusting the clearance between the inner rings of the bearing. Adjust the clearance of the inner ring of the bearing by adjusting the spacer between the end face of the shaft and the end face of the end cover. It is recommended to adjust the thickness of the spacer as follows. Preliminary determination of the thickness of the gasket The first step is to make a gasket, the gasket should be slightly thicker, and ensure a clearance value of 0.25 mm to 0.5 mm, which can provide a measurable axial clearance. The preliminary thickness of the gasket X1 is calculated as follows: X1 mm preliminary thickness of the gasket, Figure 3Bi mm width of the inner ring of the bearing can refer to the inspection table L mm The depth of the inner ring support seat s mm Reserved clearance height, s u003d 0.25 mm to 0.5 mm. Figure 3 Initial shim thickness for bearing arrangement X10017746 Schaeffler Group Industrial TPI 205 63 Determination of the required shim thickness After measuring the axial clearance, the shim thickness X can be finally determined. The axial clearance of the bearing can be obtained by lifting the bearing outer ring and surrounding structural members and measuring their movement. Determine the thickness of the gasket: determine the preload: X mm required gasket thickness, Figure 4X1 mm gasket initial thickness A mm measured axial clearance V mm preload FV kN preload, the recommended value is 3.5% of the rated Dynamic load CCs kN0.926/mm axial elastic coefficient, see dimension table. Figure 4 Bearing arrangement and shim thickness X.