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Double Row Ball Slewing Bearing (WD-07) Internal Gear With Slewing Ring Bearings Better Price

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A slewing bearing or slew[ing] ring is a rotational rolling-element bearing or plain 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.)
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Slewing bearing

A slewing bearing or slew[ing] ring is a rotational rolling-element bearing or plain 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 resemble oversize aircraft control surface bearings.

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.

Double row ball slewing bearing, slewing ring has three seat rings, the steel ball and spacers can be directly arranged into the upper and lower race, and the steel ball has two different size.

Double row different ball slewing bearing , slewing ring’s axial and radial loads are relatively large, it is specially suitable for the medium diameter tower cranes, truck mounted cranes etc.

WD-073.png


Model

Pdf.format

Dimensions ( mm) Mounting dimension (mm)
Da O U Di Ha Hb H La na da Li ni di
WD-073.22.0916.pdf 1010 822 918 786 80 88 98 974 36 18 858 36 18
WD-073.25.1105.pdf 1202 1008 1115 962 88 98 110 1166 36 18 1044 36 18
WD-073.30.1220.pdf 1332 1108 1222 1062 98 110 120 1290 48 22 1150 48 22
WD-073.30.1593.pdf 1713 1473 1595 1418.4 98 110 120 1667 48 26 1519 48 26


Model Gear Data Gear force( KN) Weight
P(mm) Module Z(teeth no.) Allowed Max Kg
WD-073.22.0196 800 8 100 36.2 72.4 194
WD-073.25.1105 980 10 98 45 90 297
WD-073.30.1220 1080 10 108 68.9 137.8 387
WD-073.30.1593 1440 12 120 92 184 549


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Xuzhou WanDa Slewing Bearing Co.,Ltd.
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Xuzhou WanDa Slewing Bearing Co.,Ltd.
 No.15,Huaxia Road,the 3rd Industrial Park,Tongshan District, Xuzhou, Jiangsu,China.
  +86-516-83309366     +86-516-83303986
   info@slew-bearing.com
  +86-133-37939399   +86-180 2053 7858

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