Bearing 4T-2578/2523 (NTN)

Tapered roller bearings 4T-2578/2523

Bearing number : 4T-2578/2523

Size (mm) : 28.575x69.85x23.812

Brand : NTN

Bore Diameter (mm) : 28,575

Outer Diameter (mm) : 69,85

Width (mm) : 23,812

Bearing dimensions and specification in NTN catalogue:

d - 28,575 mm

D - 69,85 mm

T - 23,812 mm

B - 25,357 mm

C - 19,05 mm

ra1 max. - 1,3 mm

a - 9,1 mm

Da - 61 mm

db - 35 mm

ra max. - 2,3 mm

da - 39 mm

Db - 64 mm

Weight - 0,483 Kg

Basic dynamic load rating (C) - 69 kN

Basic static load rating (C0) - 81,5 kN

(Grease) Lubrication Speed - 5 700 r/min

(Oil) Lubrication Speed - 7 600 r/min

Calculation factor (e) - 0,27

Calculation factor (Y0) - 1,21

Calculation factor (Y2) - 2,19

Designation

Bore Dia, mm

Outer Dia, mm: