Put on insulated work gloves, such as welding gloves, before handling the dry ice. According to Dry Ice Info, oven mitts may be used in lieu of work gloves. Work on a disposable wooden surface, as dry ice may crack some solid work surfaces.
Place some dry ice in the bottom of an insulated container that is large enough to accommodate the bearing and also able to withstand temperatures of -109 degrees F. Position the bearing in the container on top of the layer of dry ice. Pack dry ice into and around the bearing. To minimize the amount of dry ice required, a container or sleeve with a diameter smaller than the bearing can be placed inside the bearing. Dry ice should be packed between this space filler and the bearing to ensure adequate cooling. Cover the top of the bearing with a layer of dry ice.
Close the insulated container to minimize sublimation of the dry ice, but do not make an airtight seal as this may cause a gas buildup in the container.
Cool the bearing for four hours.
Remove the bearing from the insulated container using gloves. Avoid any skin contact with the cold bearing as this will result in burns.
Press the bearing into the housing. Apply uniform pressure over the end of the bearing during insertion to avoid damaging the bearing or the housing.