Bearing Machinery Technology Co., Ltd

NSK 35bd5020 Bearing

 

Small Slewing Bearing

Small slewing bearing or slew[ing] ring is a rotational rolling-element bearing  that typically supports a heavy but slow-turning or slow-oscillating load, often a horizontal platform such as a conventional crane ,a swing yarder,or the wind-facing platform of a horizontal-axis  windmill. (To "slew" means to turn without change of place.)

Compared to other rolling-element bearings, slewing bearings are thin in section and are often made in diameters of a metre or more; the slewing bearings on the Falkirk Wheel  are 4 metres diameter and fit over a 3.5 metre axle.

Slewing bearings often use two rows of rolling elements. They often use three race  elements, such as an inner ring and two outer ring "halves" that clamp together axially.

Slewing bearings are often made with gear teeth integral with the inner or outer race, used to drive the platform relative to the base.

As for other bearings that reciprocate, rather than rotating continuously, lubrication can be difficult. The  oil wedge built up in a continuously rotating bearing is disrupted by the stop start motion of slewing. Instead, a  hydrostatic bearing with pumped oil flow may be used.

Slewing Ring for Tower Crane
Slewing Ring for Tower Crane
8865590637300
PEER BEARING CO.
Slewing Bearing for CB2900
Slewing Bearing for CB2900
Cylindrical Roller B
No
Four Point Contact Slewing Bearings with Internal Gear Rks. 161.20.1904
Four Point Contact Slewing Bearings with Internal Gear Rks. 161.20.1904
8483.20.40.80
Flange Block Bearing
Slewing Bearings Ring with External Gear 011.25.1800.000.11.1503
Slewing Bearings Ring with External Gear 011.25.1800.000.11.1503
ABEC 1 | ISO P0
8482.10.50.68
Slewing Ring Bearing for Stacker Reclaimer (XSA 20 1055N)
Slewing Ring Bearing for Stacker Reclaimer (XSA 20 1055N)
0.0
N/A
Good Quality Spur Gear Slewing Drive Sp-I 0229
Good Quality Spur Gear Slewing Drive Sp-I 0229
0 Inch | 0 Millimete
1 Piece Solid
Loader and Unloader Slewing Ring
Loader and Unloader Slewing Ring
FAG BEARING
N/A
Single Row Four-Point Angular Contact Slewing Bearing Non-Gear
Single Row Four-Point Angular Contact Slewing Bearing Non-Gear
AA-627-3
Bearing
Supply High Quality Slewing Ring for Stacker and Reclaimer
Supply High Quality Slewing Ring for Stacker and Reclaimer
M06110
0
Excavator Kobelco Sk235 Slewing Bearing, Slewing Ring, Swing Circle
Excavator Kobelco Sk235 Slewing Bearing, Slewing Ring, Swing Circle
Teflon Labyrinth
27.24
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Slew Drive Motor
Thin Section Open Bearing
Swing Ring For Daewoo Excavator
Psl Bearing
Imo Slew Bearing
Small Slewing Bearing
Rollix Slewing Ring
Four-Point Contactbearing
Slewing Ring
Double Row Slewing Bearing
Solar Tracker Bearing
Three-Row Roller Slewing Ring Bearing
Madill Slewing Bearing
Hitac Slewing Bearing
Excavator Slewing Ring
Crane And Excavator Slewing Ring Bearing
Geared Slewing Ring
Kmi Slew Drives
Other Specific Model Slewing Bearing
Kinematics Slewing Drive
John Deere Slewing Bearing
Double Row Ball Slewing Ring Bearing