Wade antenna Delhi BBMB Heavy Duty Cast aluminum Thrust Bearing For The Use With DMX Towers
The BBMB mast (or thrust) bearing made by Wade Communications (Delhi) for their DMX towers is typically made from 2 pieces of cast aluminum that are held together by the ball bearings in the mated half-races, as shown in the diagram at right (taken from the spec sheet linked to above). There is a hole in the outer surface through which the bearings are inserted at the factory. A steel slug is sealed into place by pressing the aluminum of the cast body over the edge of the slug. This product is designed to be replaced not repaired.