Bearing 7221 AC
Inner diameter:: 105 mm
Outer diameter: 190 mm
The size of the width: 36 mm
Weight:: 4.29 kg
Outer diameter: 190 mm
The size of the width: 36 mm
Weight:: 4.29 kg
Technical specifications
Designation : 7221 AC
Dimensions, mm : 105x190x36
Producer : ETERNO
Technical data from the manufacturers catalog :
Weight - 4.29 Kg
Dynamic load rating (C) - 149000 kN
Static load rating (C0) - 132000 kN
Grease lubrication speed - 3900 rev/min
Speed limit with oil lubrication - 4900 rev/min
Bearing K65x73x23
Manufacturer: INA-FAG
Sizes: 65x73x23 (mm)
Weight:: 0.0108 (kg)

Подшипник NU 221
Manufacturer: NACHI
Sizes: 105x190x36 (mm)
Weight:: 4.03 (kg)

O-RING
Manufacturer: NQK SF
Sizes: 49.00x52.00x1.50 (mm)

T10 1780 ( Т10 1780 ) MEGADYNE MEGAPOWER
Manufacturer: ContiTech AG

Bearing 33112 (3CE)
Manufacturer: GMB
Sizes: 60x100x30 (mm)
Weight:: 0.895 (kg)

STUFFING BOX (REINFORCED CUFFS) NON-STANDARD (SD)
Manufacturer: STO
Sizes: 32x44.5x12 (mm)

3 NBR 70(034,20x03,00)
Manufacturer: KASTAS

O-RING
Manufacturer: NQK SF
Sizes: 122.00x129.10x3.55 (mm)

SALNIK REINFORCED (TC)
Manufacturer: NQK SF
Sizes: 40x50x10 (mm)

Bearing D24
Manufacturer: INA-FAG
Sizes: 49.213x81.763x20.650 (mm)
Weight:: 412 (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.