RAA Bearing Trading Co., Ltd.

SKF 22222 Bearing

 

Slewing Ring

A 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.

 

thin series slewing gear bearing
thin series slewing gear bearing
Angular Contact
N/A
Top Quality High Precision Solar Tracking System Enclosed Housing slewing drive
Top Quality High Precision Solar Tracking System Enclosed Housing slewing drive
SCHAEFFLER GROUP
FAG BEARING
Turntable bearing for lift platform, Slewing bearing for excavator
Turntable bearing for lift platform, Slewing bearing for excavator
Normal Duty
206 Series
internal gear thin type slewing ring bearing,turntable bearing
internal gear thin type slewing ring bearing,turntable bearing
B04264
0644075226943
high quality discount kobelco slewing bearing rotary table bearings
high quality discount kobelco slewing bearing rotary table bearings
TIMKEN
Inch
best price crane slewing ring bearing
best price crane slewing ring bearing
N/A
FYH
light weight external or internal gear single row ball slewing ring bearing
light weight external or internal gear single row ball slewing ring bearing
Spherical Roller Bea
N/A
high quality slewing drive
high quality slewing drive
31171535
40
high quality internal gear thin types slewing ring ball bearing
high quality internal gear thin types slewing ring ball bearing
26.742
1.875 Inch | 47.625
17inch Slewing Drive for Tower Solar Tracker System
17inch Slewing Drive for Tower Solar Tracker System
Single Row | Spheric
M06110
gear heat treatment single row contact ball small slew ring bearings
gear heat treatment single row contact ball small slew ring bearings
104.5
FAG BEARING
Next ▸
All Products Contact Now
Product Categories
Rotek Slewing Ring
Single Row Ball Slewing Bearing
Light Type Slewing Bearing
Samsung Slewing Bearing
Swing Ring For Kobelco Excavator
Crane Slew Ring
Triple-Row Roller Slewing Ring Bearing
Slewing Ring
Imo Slewing Ring Bearing
Slewing Ring Bearing Manufacturers
Valmet Slewing Bearing
Skf Slewing Ring
Rotek Bearing
Slewing Ring Turntable
Rks Slewing Ring Bearing
Crawler Crane Slewing Bearing
Ball And Roller Slewing Ring Bearing
Double Row Angular Contact Ball Slewing Ring
Mobile Tower Crane Slewing Ring
Urb Slewing Ring Bearing
Slewing Drive Price
Cross Roller Slew Bearing
Timken Bearing