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Double row ball slewing bearing (External gear type)

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. 

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.


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SelectInquiryDesignations Boundary Dimension (mm)Bolt Hole Diameter (mm)Weight
Da DiH LaLina3)ni3)mz(Kg)
E.504.2.25.00.D.6 504 300 95 16 17 16 17 8 61 65
E.608.2.25.10.D.6 608 382 95 24 17 24 17 8 74 84
E.712.2.25.12.D.6 712 470 98 24 17 24 17 8 87 103
E.1079.2.20.12.D.3-V 1079 893 90 30 M16 30 18 8 131 140
E.1080.2.22.00.D.6 1080 893 92 30 17 30 17 8 133 150
E.1200.2.25.00.D.1 1200 976 98 36 19 36 19 8 148 210
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