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NSK 6203ddu Bearing

 

Daewoo Slewing Bearing

Daewoo  slewing bearing 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.
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.

Slewing ring, slew bearing for excavator and crane spare parts YRT260, 900
Slewing ring, slew bearing for excavator and crane spare parts YRT260, 900
110
Back Combination
four point contact ball swing ring bearings rubber seals
four point contact ball swing ring bearings rubber seals
Four-Bolt Plummer Bl
16006 lbf
China old factory with competitive price slewing bearing, turntable bearing
China old factory with competitive price slewing bearing, turntable bearing
Bearing unit
Standard
xuzhou fenghe manufacturer four point contact ball swing ring
xuzhou fenghe manufacturer four point contact ball swing ring
6903
Deep Groove Ball Bea
large size swing ring bearing tower crane slewing gear
large size swing ring bearing tower crane slewing gear
123 mm
ES207-22G2T04
tower crane slewing bearing ,internal gear
tower crane slewing bearing ,internal gear
53000
Steel
Internal Gear Slewing Bearing for Stiff Boom Crane
Internal Gear Slewing Bearing for Stiff Boom Crane
B04144
1 mm
slewing rings optimal turret bearing for military large stock in mill
slewing rings optimal turret bearing for military large stock in mill
52
Flanged Pilot Type
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