Wheel bearing for launching trolley

摘要

The launching trolley has tubular axles (10) to which each wheel bearing is fitted. Each bearing has a number of rollers (12) with necked ends to clip onto open profile support rings (14) on the tubular axle. The wheel hub (18) is slid over the bearing and the system is secured by clamping rings (16) fitted to each side. No lubrication is required. The bearings and the clamping rings etc. can be made of plastic. The clamping rings have radial flanges linked to axial tube sections by ribs. They are split and are secured onto the tubular axle by clamping sleeves and threaded fasteners.