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6820DU Bearing is double sealed
40mm x 85mm x 49
The SF6800ZZ is a stainless steel flanged ball bearing with metal shields on both sides to help block out debris while maintaining smooth performance
Y Travel = 8' Feet
Basic Static Load Rating: 127
21 Inch Four-Point Contact 528x732x80mm Ball Slewing Ring Bearing - No Gear Ball Diameter - 5 inch (5") 6820DU Bearing is double sealed21 Inch Four Point Contact 528x732x80 mm Ball Slewing Ring Bearing with No Gear Four Point Contact Ball Slewing Bearing with no 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 Outside
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