SKF Cooper split roller bearings and bearing units

Split roller bearings in rod end housings pro- vide a simple way of mounting bearings on cranks. As the complete bearing and housing unit is split radially, the cranks can be made solid rather than being built up or overhung. Typical applications include shaker screens and classifiers. Designs and variants Rod end housings have a split outer casing and are available in two designs: • “T” type ( fig. 1 ) • shoe type ( fig. 2 ) They are suitable for: • a locating bearing (designation suffix GR) with C2 clearance • a swivel cartridge that is matched to the housing with an S1 fit to reduce the clear- ance between the cartridge and rod end For very low speed applications, bearings with a normal clearance could be used. Housing materials • grey cast iron, (grade EN-GJL-250) in accordance with BS EN 1561, as standard • ductile iron (grade EN-GJS-400/18 in accordance with BS EN 1563), e.g. for impact or pulsating loads, available on request • steel, e.g. for impact or pulsating loads, available on request Fig. 1 “T” type rod end housing Design considerations Shaft dimensions Journals should be machined to an h6 toler- ance class. The sides of the journal do not require close tolerance machining as they do not locate the bearing. The bearing is posi- tioned by the inner ring being clamped onto the shaft, and there is clearance between the sides of the journal and the bearing inner ring. The journal widths and fillet radii listed in the product tables are suggested dimensions to clear standard cartridges. Other combina- tions of journal width and fillet radius may be used. Special cartridges may be supplied if narrower journals are required. Fig. 2 Shoe type rod end housing 8 Rod ends 176

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