Inner diameter:: 59.977 mm
Outer diameter: 100 mm
The size of the width: 25.4 mm
Weight:: 0.779 kg

Technical specifications

Designation: 28980 / 28921

Producer: TIMKEN

Technical data from the manufacturers catalog :

Inner diameter(d): 59.977 mm

External diameter(D): 100 mm

Working width (T): 25.4 mm

Width (height) (B): 25.4 mm

Outer cage width (C): 19.845 mm

Internal chamfer radius (R): 3.5 mm

Outside chamfer radius (r): 3.3 mm

Cr (KN): 90.5

Cor (KN): 134

a: 22.8 мм

Width: 0.779 mm