Bearing 3781 / 3720
Inner diameter:: 49.212 mm
Outer diameter: 93.264 mm
The size of the width: 30.162 mm
Weight:: 0.877 kg
Outer diameter: 93.264 mm
The size of the width: 30.162 mm
Weight:: 0.877 kg
Technical specifications
Designation: 3781 / 3720
Producer: TIMKEN
Technical data from the manufacturers catalog :
Inner diameter(d): 49.212 mm
External diameter(D): 93.264 mm
Working width (T): 30.162 mm
Width (height) (B): 30.302 mm
Outer cage width (C): 23.812 mm
Internal chamfer radius (R): 3.5 mm
Outside chamfer radius (r): 3.3 mm
Cr (KN): 102
Cor (KN): 134
a: 22.1 мм
Width: 0.877 mm
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O-RING
Manufacturer: NQK SF
Sizes: 46.30x57.70x5.70 (mm)
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.