Slewing ring without teeth WD-06 series
ballsingle-rowfour-point contact

slewing ring without teeth
slewing ring without teeth
slewing ring without teeth
Add to favorites
Compare this product


without teeth
Rolling element
single-row, four-point contact
for wind turbines, for robotics
Other characteristics
axial, for heavy loads
Outer diameter

Max.: 1,166 mm (45.906 in)

Min.: 486 mm (19.134 in)

Inner diameter

Max.: 1,022 mm (40.2 in)

Min.: 342 mm (13.5 in)


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.


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.