Crane And Excavator Slewing Ring Bearing

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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.

Light Bearings Slewing Ring Supply with 12 Months Warranty Period

12 1 pcs

Light Type Slewing Ring for Excavator Turntable Wd-060.20.0544

380 480
199.00 KGS In Stock

High Quality Light Slewing Bearing Ring Mobile Tower Crane

Cast Bronze C93200 & 717905066580
SAE 660 (C932&# 2-3/4 in

Professional Main Gear Manufacturer Slewing Ring Bearing Wd-061.20.0644

Uncoated Single Joint
Click here Steel

Customized Slewing Ring for Samsung Excavator in China Qnd. 900.25-1

1.5600 in Heavy Duty
Open Lubrication Fitting

Good Light Series Slewing Bearing Rings for Excavators

72200 lbf Needle Rollers

High Precision Slewing Ring of Large Size Light Type Slewing Bearing Wd-231.20.0414

2.5000 in UEST200NP
Cast Iron - Nickel P Contact with Slinger

Light Type Slewing Bearing Slewing Ring Wd-231.20.0544

DIN 625-1 Uncoated
16 mm 16 mm

Slewing Bearing Leveling Machine Outer Gear with Internal Flange

In Stock Two Rubber Seals
52mm 0.02 KGS

Ungeared Light-Series Slewing Ring Bearing (RKS. 230541)

Open Type 24140cc/c3w33-qbl
Steel 200mm

Light Type Slewing Bearing Wd-060.20.1094

12100 lbf Lubrication Groove &
1.1250 in 6800 RPM

Light Slewing Rings Bearing with No Gear on Sale

Fiberglass Reinforce 21 mm
Open 029176070716