What size hub assembly do I need?
To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose # 8-258-5UC1. If the inner bearings are marked L44643, you will need # 8-258BTUC1.
What is the most common trailer hub size?
Most 4 lug hubs have a 4” bolt circle and most 5 lug boat trailer hubs have a 4 ½” bolt circle diameter. Cargo and utility trailers with 5 lug hubs are commonly found with a 5” bolt circle.
What is my hub size?
Measure across the middle of the wheel hub to get the diameter. The wheel hub bolt pattern is the number of bolts lugs on the hub and the diameter of the circle in which they are arranged.
How do you measure the diameter of a wheel hub?
Place a tape measure across the face of the exposed wheel hub, which it protrudes out from the center of the drum brake assembly. Take the measurement across the front of the hub, which is the diameter of the hub. Make sure your tape measure intersects the center of the hub. Write your measurement down.
How are wheel hubs measured?
How do I know what axle capacity I have?
To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that will list the weight capacity.
Are all 5 bolt trailer rims the same?
While a 5-Bolt on 4.5″ is standard and by far the most common among trailer wheel 5-bolt patterns, there are times in which the trailer manufacturer uses a different pattern such as 5 on 5″.
What size wheel bearings do I have?
Remove the hub and look for the reference numbers stamped into the metal of both inner and outer bearings. Once you have the numbers, it will be easy to work out the correct replacements. If you can’t read the numbers stamped on the metal, take measurements of both bearings and the spindle.
What if center bore is too big?
If the diameter of the hub collar is larger than the central bore, it will be impossible to fit the new wheels. On the other hand, if the center bore is larger than the diameter of the hub, the wheel can be fitted, but unwanted diameter differences will be problematic.
What is hub flange diameter?
Hub flange diameter, also known as Pitch circle diameter (PCD), is measured between centres of opposite spoke holes of the same hub flange. Best tool for determine that is by using caliper gauge and spread it between centres of the opposite spoke holes.