Replacement wheel hubs for all types of trailers.
They are even available in kits that includes everything you need to do the
select a hub the first step is to determine is the number of studs/bolts
and the ‘bolt circle’ diameter. Most 4 lug hubs have a 4” bolt circle and most 5
lug boat trailer hubs have a 4-1/2” bolt circle diameter. Cargo and utility
trailers with 5 lug hubs are commonly found with a 5” bolt circle. To correctly
measure the bolt circle of a hub, measure from the center of the hub to the
center of a stud and multiple that measurement by two.
The second measurement is the Inner
and Outer bearing size. Most bearings are stamped with a reference number that
can be used to easily identify its inside diameter. If the number is not available, the most accurate way to measure the
bearing I.D. is with a micrometer. Be sure to check both the inner and outer
bearing measurements before ordering. Hub length or bearing distance should also
be considered. Some trailer manufacturers, such as LOADRITE & EZ-LOADER, use
a ‘short hub’ on their 1” & 1-1/16” straight axles. The overall hub length
is therefore shorter than most other standard trailer hubs.
When rebuilding the hub body with a new bearing kit remember
to always replace both the inner and outer races or cups as a set.