F&L Gear Bearings Co., ltd
  • Address2-4-28 Dyomachibori, Mishi-Lu, Esaka-shi, Asaka 661-11114, Japan
  • Worktime9:00-18:00
  • Phone(Working Time)476-379-8357
  • Phone(Nonworking Time)476-379-8357
  • Fax86-12-7891

INA slewing ring bearing

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INA slewing ring 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. (To "slew" means to turn without change of place.)

 

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.
 

Bearing Number Bore Dia Outer DIa Width Size
RU178X Crossed Roller Bearing M6x1 17 mm 54 mm 15 mm
RU228X Crossed Roller Bearing Round Self Centering Non-Expansion Concentric Clamp Col
RU178 crossed roller bearings 8.73 Hz NTN 0.44 Hz 11.27 Hz
RU297X Crossed Roller Bearing 6.65 kN 17 mm 30.5 mm 0.81 kg
RU228 slewing ring bearing 55 mm 157 mm 27.5 mm UK210G2H-26
RU124G Crossed Roller Bearing black coat rust-proof 12.63 Hz -20 °C 16 mm 1 mm
stacker reclaimers bearing RU297(G) UC212-39G2T04 79.4 mm 245 mm 5.29 kg
RU228(G) Crossed Roller Bearing 19 mm EX202G2T20 9 mm R1/8"
RU148(G) Crossed Roller Bearing 42.9 mm 30 mm 82 mm 18.2 mm
Antirust Blackening Surface RU124G THK high rigid slewing ring 1.722 4.36 Hz 64.5 mm 2 mm
RU297 crossed roller bearings for rotary tables 515 Series Non-Expansion SETSCREW Setscrew