How to assemable long roller bearing?

How to assemable long roller bearing?
Installing a fully loaded roller bearing is usually done using an auxiliary sleeve. At this point, the auxiliary roller or auxiliary sleeve supports the roller to prevent it from falling out. The shaft neck lifts the roller with its own chamfer, and as the needle roller bearing slowly moves inward on the shaft neck, the auxiliary roller or auxiliary sleeve slowly exits until it is installed in the working position.

The outer diameter of the auxiliary roller and auxiliary sleeve should be 0.1-0.3mm smaller than the shaft diameter. When installing, first apply lubricating grease to the inner surface of the outer ring of the long roller bearing, and place the roller tightly against the inner surface.
Then, push the auxiliary roller or sleeve that replaces the journal or bearing inner ring into the outer ring hole, and align its end face with the installation shaft end face or the long roller bearing inner ring end face already installed on the shaft. Then, use a press or hammer to tap and apply pressure.

Roller bearing can also be installed in this way, by applying a thin layer of lubricating oil to the outer diameter of the auxiliary sleeve, inserting it into the outer ring of the long roller bearing, so that the auxiliary sleeve and the outer ring of the long roller bearing form an annular hole, and then installing the needle in the annular hole.
For long roller bearing without inner or outer rings, a thin layer of lubricating grease can be applied to the rolling surface of the shaft or housing hole during installation, and the rollers can be tightly pressed against the lubricating grease at the installation site in sequence.
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