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Installing Split Thin Section Bearings

The bespoke nature of the UNASIS Split Thin Section Bearings allows previously impossible assembly geometries to be used. The innovative design of these bearings means either the inner or outer ring to be placed in the groove on either the housing or the shaft. It is not possible to assemble the bearing if both of the rings are in the groove, as at least one retainer should be used.

To use the recessed method to assemble the bearing, you will need to fit the un-retained bearing ring first. In this example, we will assume that this is the inner ring. The two potential fitting methods are:

 

  1. The bearing is passed axially along the shaft until correctly located. This is the preferred method. See the drawing below.
     
  2. An alternative method is rotating the bearing onto the shaft held in a helical form, manoeuvring the ring into position in a similar manner as threading a nut to a bolt. This method is suitable only if the bearing groove is close to the shaft end. You should contact us for this distance in each application.

 

The bearing’s split should never be passed radially over the shaft, as this can create irreversible damage to it due to excessive stress on the bearing ring.

 

The next step is the cage, balls and outer ring to be fitted before finally locating in the housing. The outer ring is then to be retained. Please always consult us if you are unsure of a suitable method of retention.

 

The required fitting tolerances for both shaft and housing can be provided. The shaft and housing fits would typically be h7 and H7, respectively.

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Please get in touch with our Sales Engineers to discuss your technical requirements.

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For more information, please call us today on +44 (0) 1865 821 720 or +1 888 501 5444

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