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Single-row Four Point Contact Ball Slewing Bearing with flange (Non- gear teeth 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)(Kg)
SD.505.20.00.C 518 304 56 490 332 8 12 23
SD.650.20.00.C 648 434 56 620 462 10 14 34
SD.750.20.00.C 748 534 56 720 562 12 16 40
SD.850.20.00.C 848 634 56 820 662 12 16 46
SD.950.20.00.C 948 734 56 920 762 14 18 52
SD.1050.20.00.C 1048 834 56 1020 862 16 20 58
SD.1200.20.00.C 1198 984 56 1170 1012 16 20 67
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