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How to Determine Hub and Spindle Size

Question:

Your 1.5 spinle has the 2nd measurement as 1.73, which is wrong. thats the dim for the 1.75 hubs 2nd dim.

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Expert Reply:

The spindle dimensions are as follows: A is the mounting dimension, B is the seal dimension, C is the inner bearing surface, D is the outer bearing surface and E is the diameter of the threaded portion of the spindle for spindle nut selection.

Say you need a spindle and hub for a wheel with 5 on 4-1/2 inch bolt pattern and an axle that is 3500 lbs. For a single axle trailer you can use two of either the item # TRU64FR, if your axle is round or item # TRU47FR if your axle is square. Then you need two hubs, part # 84545BX. If you want to use EZ-Lube spindles and hubs you will need to order the round spindles, item # TRU74FR and the EZ-lube hubs item # 84545UC1-EZ hubs.

If you have a spindle you need a hub for let me know the dimensions and I will be glad to recommend the proper parts for your trailer.

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