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Product information

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Recommendations

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Product data Page ................4 Design for easy mounting Page ..............57 âž” fig ). The distance between thisgroove and the bearing side from which mounting and dismounting are to be performed should be approximately one third of the seating width. Recom- mended dimensions for the ducts and grooves as well as for the threads for the oil supply connection are given in

Designing the bearingarrangement for easy mounting and dismount- ing

To facilitate subsequent removal of a bearing, it can be advantageous to • provide recesses in the shaftshoulder ( any risk of damaging the bearing and seating.In order to employ the oil injectionmethod it is necessary to provide an oil supply duct in the shaft as well as an oil distributor groove in the seating ( âž” fig
17 ), and• recesses or threaded holes in thehousing bore ( âž” fig ). This not only eases mount-ing but reduces the risk of damaging the mating surfaces by skewing of the bearing rings.Particularly for large bearings,it isnecessary to design the arrangement so that bearing mounting, and espe- cially dismounting, are simplified or even made possible. To ease mounting, the shaft ends andhousing bores should have a lead-in with an angle of between 10 and 20° ( âž” fig
18 )so that withdrawal tools can be usedwithout difficulty.To dismount maintenance-free bear-ings having a bore diameter of some 80 mm and above, it is recommended that the oil injection method be used. This involves introducing oil under high pressure between the bearing inner ring and its shaft seating. This greatly reduces the force required to dismount the bearing and practically eliminates
19 16 7 8 Chamfering shaft ends and housingbore entrancesShaft shoulder with recessHousing shoulder with threaded holes Fig 16 Fig 17 Fig 18 46