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31311 Metric Single Row Tapered Roller Bearings
Dimensions: Bore (Inner) Diameter: 55 mm; Outer Diameter: 120 mm; Width (Thickness): 31.5 mm;

31311
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Product Attributes
Product Number31311
Bore diameter55 mm
Outside diameter120 mm
Total width31.5 mm
Shoulder diameter of inner ring88.4 mm
Widthof inner ring29 mm
Width of outer ring21 mm
Chamfer minimum dimension of inner ring (r1,2)2.5 mm
Chamfer minimum dimension of outer ring (r3,4)2 mm
Distance side face to pressure point (a)37 mm
Basic dynamic load rating (Cr)149 kn
Basic static load rating (Cor)137 kN
Fatigue load limit (Pu)16.6 kN
Reference speed4300 r/min
Limiting speed5600 r/min
Mass1.55 kg
Limiting value (e)0.83
Axial load factor (Y)0.72
Axial load factor (Y0)0.4
Maximum diameter of shaft abutment (da)68 mm
Minimum diameter of shaft abutment (db)66.5 mm
Minimum diameter of housing abutment (Da)94 mm
Maximum diameter of housing abutment (Da)111 mm
Minimum diameter of housing abutment (Db)113 mm
Minimum width of space required in housing on large side face (C4 mm
Minimum width of space required in housing on small side face (C10.5 mm
Maximum Radius of shaft fillet (ra)2.5 mm
Maximum Radius of housing fillet (rb)2 mm
31311
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