Bearing NA4988
Inner diameter:: 440 mm
Outer diameter: 490 mm
The size of the width: 600 mm
Weight:: 131 kg
Outer diameter: 490 mm
The size of the width: 600 mm
Weight:: 131 kg
Technical specifications
Designation : NA4988
Dimensions, mm : 440x490x600
Producer : ETERNO
Technical data from the manufacturers catalog :
Weight - 131 Kg
Dynamic load rating (C) - 1400000 kN
Static load rating (C0) - 3680000 kN
Outside width (C) - 160mm
Grease lubrication speed - 640 rev/min
O-RING
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Sizes: 228.27x233.51x2.62 (mm)
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Sizes: 55x120x29 (mm)
Weight:: 1.5 (kg)
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Manufacturer: NACHI
Sizes: 15x32x9 (mm)
Weight:: 0.032 (kg)
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Manufacturer: INA-FAG
Sizes: 25x37x16 (mm)
Weight:: 0.06 (kg)
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Sizes: 8x11x10 (mm)
Weight:: 0.0012 (kg)
Подшипник 150KBE31+L
Manufacturer: NSK-RHP
Sizes: 150x250x80 (mm)
Weight:: 14.2 (kg)
Bearing 30215P5 (D7215E)
Manufacturer: TMB
Sizes: 75x130x27.25 (mm)
Weight:: 1.6 (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.
