SKF Cooper split roller bearings and bearing units

Mounting Mounting The mounting procedures for a split cylindri- cal roller and a split tapered roller bearing are similar. Instructions are supplied with each bearing. Specific instructions for non-standard assemblies can be supplied on request. Prior to mounting • Disassemble the bearings. – Unwrap the bearing parts. – Remove the outer ring halves (if sup- plied assembled around other parts). – Separate the cage halves (if required). – Undo the clamping ring screws and remove the clamping rings from the inner ring halves. • Remove the preservative from all surfaces. NOTE: Complete roller bearings are inter- changeable between similar cartridges and cartridges are interchangeable between standard housings provided that standard clearances are specified. The bearing, cage assemblies, and hous- ing components however should not be mixed. All bearing and housing components (except for pressed steel, die cast, and plastic cages) are marked with matching numbers/ letters on each half. Keep similar compo- nents together. Cage halves that are not marked should also be kept together as the rollers are graded into sets. Mounting a split roller bearing in a plummer block housing 1 Position the housing base • Place the plummer block base in position ( fig. 19 ). • Bolt the housing base to the support sur- face using appropriate attachment bolts ( product tables , pages 108 to 147). – Plummer block housing bases typically require slight movement at a later stage in order to accurately position the shaft. 2 Mount the inner ring halves • Lightly oil the shaft with a thin oil and remove the excess with a clean lint-free cloth. • Position the inner ring halves on the shaft in the correct position ( fig. 20 ). • Using feeler gauges, make sure the gaps at both joints of the inner ring are equal. – Inner rings of non-locating cylindrical roller bearings are typically set centrally with the outer rings. – In cases of significant axial expansion there may be a deliberate offset. This is usually up to a maximum of 10% of the roller length, but may be more in the case of special types of bearings. 3 Mount the clamping rings • Fit the clamping rings with joints at approximately 90° to the inner ring joints (45° in the case of large bearings with four-part clamping rings). • Progressively tighten all clamping ring screws ( fig. 21 ). • Tap down each inner ring half and clamp- ing ring all around the shaft using a soft- faced hammer ( fig. 22 ), or insert a hard- wood block between a steel hammer and the bearing parts. • Retighten the clamping ring screws. • Repeat until screws remain fully tight. • Make sure the gaps at both joints of the inner ring are equal. • Make sure the gaps at both (or all four) joints of the clamping rings are equal. Fig. 19 Positioning the housing base Fig. 22 Setting the clamping ring and inner ring Fig. 20 Mounting the inner ring halves Fig. 21 Tightening the clamping ring screws 49 1

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