What is the Difference Between 1.25 Inch Trailer Bearings


Whats the difference between the 15123 and LM67048 outer bearing? Is one stronger than the other? Do they use the same or different race?


Expert Reply:

The short answer is Yes, bearing # 15123 is slightly larger and stronger than # LM67048 and they use different races which means they are not interchangeable.

Bearing 15123 uses race # 15245 which has an outer diameter of 2.441 inches and bearing LM67048 uses race # LM67010 which has an outer diameter of 2.328 inches. The size and strength differences are due to the fact that bearing # 15123 is used in a higher weight capacity hub. Bearing # 15123 is the outer bearing for a hub for a 6,000 lb axle and bearing # LM67048 is the outer bearing for a hub for a 5,200 lb axle.

There is a third bearing with the 1.25 inch inner diameter which is # 14125A. This bearing is larger and stronger than both # 15123 and # LM67048. It is the outer bearing for a hub for a 7,000 lb axle and uses race # 14276. I've attached video reviews of each bearing and a link to our entire trailer hub selection for you to check out.

expert reply by:
John H

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