Bearing NA4904
Inner diameter:: 20 mm
Outer diameter: 25 mm
The size of the width: 37 mm
Weight:: 0.074 kg
Outer diameter: 25 mm
The size of the width: 37 mm
Weight:: 0.074 kg
Technical specifications
Designation : NA4904
Dimensions, mm : 20x25x37
Producer : ETERNO
Technical data from the manufacturers catalog :
Weight - 0.074 Kg
Dynamic load rating (C) - 17040 kN
Static load rating (C0) - 20400 kN
Outside width (C) - 17mm
Grease lubrication speed - 12800 rev/min
GEAR PULLEYS 8M-140S 354.91 (8M-140S 354.91/62)
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Подшипник 3981/3926
Manufacturer: NSK-RHP
Sizes: 58.738x112.712x33.338 (mm)
Weight:: 1.44 (kg)
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Sizes: 60x70x7 (mm)
Торцевое уплотнение RM KB-50
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Sizes: 100x215x47 (mm)
Weight:: 7.45 (kg)
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Manufacturer: ETERNO
Sizes: 30x45x27 (mm)
Weight:: 0.1 (kg)
Подшипник NU 2230
Manufacturer: NACHI
Sizes: 150x270x73 (mm)
Weight:: 18.7 (kg)
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Manufacturer: ContiTech AG
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Sizes: 90x115x12 (mm)
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Sizes: 35x62x14 (mm)
Weight:: 0.17 (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.
