STANDARD TOLERANCE CHART SERIES
Tables 7-5 Tolerances for metric series tapered roller bearings = JIS B 1514-1 =, Tables 7-4 Tolerances for measuring instrument ball bearings (inch series) = ANSI/ABMA standards = (reference), Tables 7-3 Radial bearing tolerances (tapered roller bearings excluded) = JIS B 1514-1 =, Permissible values for thrust bearing raceway thicknessĪccuracies for dimensions and running of each bearing type are listed in.Permissible values for perpendicularity of outer ring outside surface.Permissible values for perpendicularity of inner ring face.Permissible values for radial and axial runout of inner and outer rings.Running accuracy (items on runout of rotating elements).Tolerance and permissible values for tapered bore.Tolerance limits for chamfer dimensions.Tolerances for set bore diameter and set outside diameter of rollers.Tolerances for bore diameter, outside diameter, ring width, assembled bearing width.Boundary dimension accuracy (items on shaft and housing mounting dimensions).Tolerances for each bearing class, and organizations concerning bearings are listed in Table 7-2 Bearing type and tolerance class.
STANDARD TOLERANCE CHART ISO
These tolerances follow ISO standards, but some countries use different names for them. (These JIS standards are based on ISO standards.)īearing tolerances are standardized by classifying bearings into the following six classes (accuracy in tolerances becomes higher in the order described): 0, 6X, 6, 5, 4 and 2.Ĭlass 0 bearings offer adequate performance for general applications and, bearings of class 5 or higher are required for demanding applications and operating conditions including those described in Table 7-1 High precision bearing applications. These tolerances are prescribed in JIS B 1514-1, JIS B 1514-2, and JIS B 1514-3 (roller bearings - bearing tolerances part 1: radial bearings, part 2: thrust bearings, and part 3: permissible values for chamfer dimensions). Accuracy and roughness of shafts and housingsīearing tolerances and permissible values for the boundary dimensions and running accuracy of bearings are specified.Bearing rings and rolling elements materials.Limiting speed for sealed ball bearings.Tolerances and tolerance classes for bearings.Dimensions of snap ring grooves and locating snap rings.Boundary dimensions and bearing numbers.Allowable axial load for cylindrical roller bearings.Basic static load rating and static equivalent load.
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