TFI Bearing Co.,Ltd

NSK 6203ddu Bearing

 

Crane Slew Ring

Large diameter slewing ring bearings are critical components in many applications. Military applications include tank turrets, missile launchers, communication antennae, precision radar antennas, and gun mounts. Common commercial applications include aerial lifts, hydraulic excavators, boom cranes, and tunnel boring machinery. Large bearings for these applications are not only expensive to buy, but typically require lead times ranging from two months to a year or longer.

Since the bearing is so critical, careful maintenance is necessary. More than 96% of slewing ring bearing failures are due to surface-originated lubrication problems, contamination, overloading, and improper installation and mounting fits. These surface failures occur much earlier than classical fatigue failures and are less predictable.

Slewing ring bearing life is calculated assuming infinitely rigid and flat mounting structures. A structure that distorts significantly under load, and/or one that is out-of-flat, applies loads to localized areas rather than evenly distributing them. This causes permanent deformation in the local area, leading to early failure.

for Tower Crane Spare Parts Slewing Bearing Ring
for Tower Crane Spare Parts Slewing Bearing Ring
3200
38mm
Pentium Quality Slewing Bearing Rings Swing Circle
Pentium Quality Slewing Bearing Rings Swing Circle
90000
Light
High Speed Bearing Slewing Ring for Heavy Machine
High Speed Bearing Slewing Ring for Heavy Machine
2260 kg
TQOSN.1/GWSI
Large Diameter Slewing Bearings Rings for Windmill
Large Diameter Slewing Bearings Rings for Windmill
79.375 mm
22320 EK
Slewing Ring Bearings for Construction Machinery
Slewing Ring Bearings for Construction Machinery
24056cc/c3w33-skf
950
Slewing Ring Bearings Imo Slewing Worm Driver on Sale
Slewing Ring Bearings Imo Slewing Worm Driver on Sale
12200 kN
500 mm
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