TFI Bearing Co.,Ltd

NSK 6203ddu Bearing

 

Small Slewing Ring

Small slewing bearing or slew[ing] ring 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. (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 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.

2018 Hot sell forestry machinery slewing ring 073.050.013.018
2018 Hot sell forestry machinery slewing ring 073.050.013.018
2018
1 pcs
galvanized slewing bearing used for trailer
galvanized slewing bearing used for trailer
1 pcs
Negotiable
Excavator CX130 SLEWING RING,SWING CIRCLE P/N:KNB0782 -WWW.LDB-BEARING.COM
Excavator CX130 SLEWING RING,SWING CIRCLE P/N:KNB0782 -WWW.LDB-BEARING.COM
CX130
1 pcs
17" open housing slewing drive S17 for aerial work platform
17" open housing slewing drive S17 for aerial work platform
17"
1 pcs
slewing bearing for excavator
slewing bearing for excavator
1 pcs
Negotiable
PC100-6 excavator slewing bearing
PC100-6 excavator slewing bearing
PC100-6
1 pcs
Excavator EX300-3 SLEWING RING,SWING CIRCLE P/N:9112188
Excavator EX300-3 SLEWING RING,SWING CIRCLE P/N:9112188
EX300-3
1 pcs
home bearing vendor excavator slewing bearing slewing ring PC300-5
home bearing vendor excavator slewing bearing slewing ring PC300-5
PC300-5
1 pcs
Enclosed housing double worm slewing drive for Solar trackers SE14-2
Enclosed housing double worm slewing drive for Solar trackers SE14-2
SE14-2
1 pcs
Internal Gear Slewing Bearing HD770 for excavator
Internal Gear Slewing Bearing HD770 for excavator
HD770
1 pcs
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