Technical Parameters
20 mm 52 mm 18 mm ≈31.3 mm ≈44.2 mm 3.7 mm 2 mm min.1 mm Normal min.25.6 mm max.46.4 mm max.1 mm SKF Explorer 49.9 kN 44 kN 4.75 kN 13 000 r/min 17 000 r/min 0.35 1.9 2.9 1.8 4 µm 8 µm 8 µm 4 µm P5 20 µm 35 µm
Dimensions
d Bore diameter tΔdmp -0.01 – 0 mm Deviation limits of mid-range bore diameter D Outside diameter tΔDmp -0.013 – 0 mm Deviation limits of mid-range outside diameter B Width tΔBs -0.06 – 0 mm Deviation limits of ring width d2 Shoulder diameter of inner ring D1 Shoulder/recess diameter of outer ring b Width of lubrication groove K Diameter of lubrication hole r1,2 Chamfer dimension ISO tolerance class for dimensions 
Abutment dimensions
da Diameter of shaft abutment Da Diameter of housing abutment ra Radius of fillet Calculation data
SKF performance class Basic dynamic load rating C Basic static load rating C0 Fatigue load limit Pu Reference speed Limiting speed Limiting value e Calculation factor Y1 Calculation factor Y2 Calculation factor Y0 Tolerances of run-out
Range of section height at inner ring of assembled bearing tKia Maximum run-out of inner ring side face to the bore tSd Range of section height at outer ring of assembled bearing tKea Perpendicularity of outer ring outside surface tSD ISO tolerance class for geometrical tolerances Radial internal clearance
Minimum initial clearance Maximum initial clearance
Tolerances and clearances
General bearing specifications
Tolerances: Normal, P6, P5,
tapered bore 1:12, tapered bore 1:30Radial internal clearance: cylindrical bore, tapered bore
Bearing interfaces
Seat tolerances for standard conditions
Tolerances and resultant fit
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Warehouse
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Products Description
Spherical roller bearings can accommodate heavy loads in both directions. They are self-aligning and accommodate misalignment and shaft deflections, with virtually no increase in friction or temperature. The design includes features to facilitate relubrication. The bearings can be used in a modular system, including housings, sleeves and nuts.
Accommodate misalignment
High load carrying capacity
Relubrication features
Low friction and long service life
Increased wear resistance
