Bearing 3984 / 3920
Inner diameter:: 66.675 mm
Outer diameter: 112.712 mm
The size of the width: 30.162 mm
Weight:: 1.18 kg
Outer diameter: 112.712 mm
The size of the width: 30.162 mm
Weight:: 1.18 kg
Technical specifications
Designation: 3984 / 3920
Producer: TIMKEN
Technical data from the manufacturers catalog :
Inner diameter(d): 66.675 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: 25.9 мм
Width: 1.18 mm
Bearing NU2340EM (32640EH)
Manufacturer: TMB
Sizes: 200x420x138 (mm)
Weight:: 92.5 (kg)

Bearing 28580 / 28521
Manufacturer: TIMKEN
Sizes: 50.8x92.075x24.608 (mm)
Weight:: 0.703 (kg)

1.78 NBR 90(017,17x01,78)
Manufacturer: KASTAS

Bearing 6322Z1 (322Z1)
Manufacturer: TMB
Sizes: 110x240x50 (mm)
Weight:: 9.7 (kg)

ПОДШИПНИК ШПИНДЕЛЬНЫЙ HSS71917-E-T-P4S
Manufacturer: FAG
Sizes: 85x120x18 (mm)

Корпус UKF318+H2318
Manufacturer: NACHI
Weight:: 19.0 (kg)

K33 PU(75x88x10)
Manufacturer: KASTAS
Sizes: 75x88x10 (mm)

Bearing 22317KW33 (3617KW33)
Manufacturer: TMB
Sizes: 85x180x60 (mm)
Weight:: 7.65 (kg)

RPP14 4676 ( RPP 14 4676 -V, -M, -MFX )
Manufacturer: ContiTech AG

Подшипник 21314EX1K
Manufacturer: NACHI
Sizes: 70x150x35 (mm)
Weight:: 3.1 (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.