4.2 Assembly.
4.2.1 Shaft Assembly.
Fig 22
• The tapered roller bearings have matched pre-load spacers; these set the
rolling torque and must be kept with the matching bearings.
The preferred method of installing bearing cones is that they are heated to
approximately 125°C (250°F) prior to installation. During this operation
protective gloves should be used. Once bearing cones are installed in the
correct position they should be allowed to cool before proceeding with
assembly. After bearings cool they need to be pressed to assure they are
fully seated. Press to 15 tons make sure necessary procedures are used to
prevent component damage. During assembly press taper bearings onto
shaft then press roller bearing onto shaft.
Under no circumstances should bearing cones or cups be hammered
into position.
Fig 23
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