Crane Slew Ring

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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

3200 38mm
C3 0.20 KGS

Slewing Ring Bearing for Material Handlers

40mm 50mm
0.02 KGS In Stock

Pentium Quality Slewing Bearing Rings Swing Circle

90000 Light
In Stock 71901cega/p4a-skf

Trailer Parts Single Slewing Bearings Rings Turntable for Sale

48 mm 324 mm
655 kN 400 kN

High Speed Bearing Slewing Ring for Heavy Machine

2260 kg TQOSN.1/GWSI
1070 mm 0.31

Large Diameter Slewing Bearings Rings for Windmill

79.375 mm 22320 EK
30.163 mm EPR 12

Slewing Ring Bearings for Construction Machinery

24056cc/c3w33-skf 950
C3 420mm

Slewing Ring Bearings Imo Slewing Worm Driver on Sale

12200 kN 500 mm
13.9 mm 5280 kN

Big Slewing Ring Bearings for Excavator Parts

C3 190mm
43mm 6.35 KGS

High Quality Excavator Slewing Swing Ring Slewing Bearings

2.5mm 1.2mm
Standard Two Metal Shields

High Precision Turntable Slewing Bearing for Automation Assemble Industry 013.30.1220

9 mm 1
22 mm 32 N/µm