Bearing 3985 / 3925
Inner diameter:: 66.675 mm
Outer diameter: 112.712 mm
The size of the width: 30.162 mm
Weight:: 1.19 kg
Outer diameter: 112.712 mm
The size of the width: 30.162 mm
Weight:: 1.19 kg
Technical specifications
Designation: 3985 / 3925
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): 0.8 mm
Cr (KN): 119
Cor (KN): 174
a: 25.9 мм
Width: 1.19 mm
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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.