Bearing HR303/28 (NSK)

Tapered roller bearings HR303/28

Bearing number : HR303/28

Size (mm) : 28x68x19.75

Brand : NSK

Bore Diameter (mm) : 28

Outer Diameter (mm) : 68

Width (mm) : 19,75

Bearing dimensions and specification in NSK catalogue:

d - 28 mm

D - 68 mm

T - 19,75 mm

B - 18 mm

C - 15 mm

a - 14,5 mm

r min. - 1,5 mm

r1 min. - 1,5 mm

da min. - 39 mm

Da min - 58 mm

Da max. - 59 mm

db max. - 37 mm

Db min. - 61 mm

ra max. - 1,5 mm

rb max. - 1,5 mm

Weight - 0,341 Kg

Basic dynamic load rating (C) - 55 kN

Basic static load rating (C0) - 55,5 kN

(Grease) Lubrication Speed - 6000 r/min

(Oil) Lubrication Speed - 8000 r/min

Calculation factor (e) - 0,31

Calculation factor (Y0) - 1,1

Calculation factor (Y1) - 1,9

Designation

Bore Dia, mm

Outer Dia, mm: