Bearing 3979 / 3920
Inner diameter:: 57.15 mm
Outer diameter: 112.712 mm
The size of the width: 30.162 mm
Weight:: 1.4 kg
Outer diameter: 112.712 mm
The size of the width: 30.162 mm
Weight:: 1.4 kg
Technical specifications
Designation: 3979 / 3920
Producer: TIMKEN
Technical data from the manufacturers catalog :
Inner diameter(d): 57.15 mm
External diameter(D): 112.712 mm
Working width (T): 30.162 mm
Width (height) (B): 30.048 mm
Outer cage width (C): 23.812 mm
Internal chamfer radius (R): 3.5 mm
Outside chamfer radius (r): 3.3 mm
Cr (KN): 119
Cor (KN): 174
a: 25.6 мм
Width: 1.4 mm
ПОДШИПНИК РОЛИКОВЫЙ ИГОЛЬЧАТЫЙ RNA6917-ZW
Manufacturer: INA-FAG
Sizes: 100x120x63 (mm)

Подшипник NJ 2209 ET
Manufacturer: NSK-RHP
Sizes: 45x85x23 (mm)
Weight:: 0.521 (kg)

K68 POM(50x56x12,5)
Manufacturer: KASTAS
Sizes: 50x56x12,5 (mm)

AT10/600 ( АТ10 600 )
Manufacturer: ContiTech AG

K21 PU(80x90x6)
Manufacturer: KASTAS
Sizes: 80x90x6 (mm)

Подшипник RS-4821E4
Manufacturer: NSK-RHP
Sizes: 105x130x25 (mm)
Weight:: 0.77 (kg)

Bearing 7236 B
Manufacturer: ETERNO
Sizes: 180x320x52 (mm)
Weight:: 20.26 (kg)

Подшипник SL182922
Manufacturer: INA-FAG
Sizes: 110x150x24 (mm)

AT5 DD
Manufacturer: ContiTech AG

Bearing 22214W33 (3514W33)
Manufacturer: TMB
Sizes: 70x125x31 (mm)
Weight:: 1.55 (kg)


INSTALLING BEARINGS
Approximately 16% of all early pill accidents are caused by faulty mounting (generally excessive force) and lack of proper tools.

DROPPING BEARINGS
The need for dismantling (removal) of the bearing can be caused by several reasons: failure of the bearings, disassembly of other parts of the mechanism, and so on.

SELECTION OF FUEL OILS
The use of grease to lubricate the bearings ensures smooth operation and maximum reliability of bearings, even in extreme conditions.