This is the aftermarket bottom roller for the following Caterpillar mini excavators. This is the outside guide type roller. Some models may require the inside guide type with the center flange dropping inside the track guide. This outside guide roller type travels along the track guide system as the outside flanges prevent the track from de-tracking.
This bottom roller is known to fit the following models:
This bottom roller (127-3806) is known to fit:
It is always important to change your undercarriage parts and rubber tracks at the same time to maximize the life span of the tracks and parts and get the optimal wear.
The Cat 307 D/C/B and 308D/C/B have a different number of bottom rollers depending on your serial prefix. You may have eight or ten rollers. The serial prefix with the quantity of rollers per machine:
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