27 Inch Four-Point Contact 678x922x100mm Ball Slewing Ring Bearing - Outside Gear Outer Diameter - 7/8 inch (0.875") This is one NATR25PP track

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27 Inch Four-Point Contact 678x922x100mm Ball Slewing Ring Bearing - Outside Gear Outer Diameter - 7/8 inch (0.875") This is one NATR25PP track27 Inch Four Point Contact 678x922x100 mm Ball Slewing Ring Bearing with Outside Gear Four Point Contact Ball Slewing Bearing with Outside Gear A slewing bearing 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, or the wind facing platform of a horizontal axis windmill. (To 'slew' means to turn without change of place.) Item