Bearing Machinery Technology Co., Ltd

NSK 35bd5020 Bearing

 

Excavator Slewing Ring

ome of the premature failures experienced by slewing ring bearings can be prevented through careful monitoring of symptoms. One of the most basic indicators of slewing ring bearing problems is the condition of the lubricant. If metal particles or flakes are apparent, some form of wear is taking place.

Grinding, popping, or clicking noises from the bearing typically mean there is inadequate lubrication and/or excessive wear in the raceway.

Excessive play or movement signifies that the raceways are worn. As clearance increases, wear is usually accelerated, making close monitoring critical. The play, or clearance, in a slewing ring bearing is another important indicator of a problem. A new bearing is assembled with a specific amount of clearance to compensate for slight out-of-flatness encountered in a mounting structure. This clearance can increase dramatically due to wear.

An increase in torque or binding can mean that there is uneven wear in the raceway. If the turning torque of the bearing increases substantially or if the bearing has tight spots, this usually indicates an uneven load distribution. With excavators, for example, the operator may notice a wobbling or rocking motion in the upper structure, especially when the digging arm is extended with a load. The operator may also sense a resistance to swing and find that the upper swings an inch or two past the point where it should have come to a stop. In advanced stages of wear, the bearing will pop and crack as the machine digs and wings.

Precision Slewing Ring Bearings with External Gear for Cranes
Precision Slewing Ring Bearings with External Gear for Cranes
0717905231353
Bearings
Oversea Excavator Slewing Bearings Slewing Ring
Oversea Excavator Slewing Bearings Slewing Ring
AURORA BEARING
0.0
Heavy Duty Three Row Roller Slewing Bearing Ring
Heavy Duty Three Row Roller Slewing Bearing Ring
2.87 Inch | 72.9 Mil
4 Bolt Round Flange
New Tower Crane Slewing Bearings Ring Supplier in China
New Tower Crane Slewing Bearings Ring Supplier in China
Triple Lip
Two-Bolt Base
Three Row Roller Turntable Bearing Slewing Ring
Three Row Roller Turntable Bearing Slewing Ring
Needle Non Thrust Ro
8482.99.65.30
Three Row Roller Slewing Ring for Radar 130.32.1000
Three Row Roller Slewing Ring for Radar 130.32.1000
B04264
0.0
Port Crane Three- Row Roller Slewing Bearing Ring
Port Crane Three- Row Roller Slewing Bearing Ring
0.58
2.5 Inch | 63.5 Mill
Three Path Roller Bearing Slewing Rings with Internal Gear
Three Path Roller Bearing Slewing Rings with Internal Gear
0.205
B04144
Custom Cheap Tower Crane Slewing Ring Bearings
Custom Cheap Tower Crane Slewing Ring Bearings
Bearings
0
Three Row Roller Slewing Ring Bearings for Wind Turbine for Sale
Three Row Roller Slewing Ring Bearings for Wind Turbine for Sale
33
25MM Bore; 62MM Outs
Three Row Roller Slewing Bearing -- 130.25.500
Three Row Roller Slewing Bearing -- 130.25.500
0
Bearings
Three Row Roller Turntable Bearing Slewing Ring
Three Row Roller Turntable Bearing Slewing Ring
PT INTERNATIONAL
M06110
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