How to Find Correct Replacement Bearings For Hub With Tapered Spindle
Updated 05/08/2024 | Published 05/06/2024
Question:
I need four trailer hubs that are 5 on 4.5 The spindle is tapered from 1 3/4 to 1 1/4 I want to use the highest weight rated hub available in this size. What are my options?
asked by: Gene F
Expert Reply:
Hi Gene,
We may have a hub for you, though I'm not 100% sure if you are referencing the grease seal or bearing when you say it is tapered from 1-3/4" to 1-1/4". The issue here is that there isn't any standard hub that uses a grease seal with a 1.750" inner diameter and tapers to 1.250".
And hubs that have a 1.750" inner bearing and 1.250" outer bearing are all 6 lugs, such as the Trailer Idler Hub Assembly # AKIHUB-655-6-K so none with the bolt pattern you have. To find the right hub, it's really important to measure the spindle using a digital caliper where the bearings and seal ride, as shown in the below diagram.
Or sometimes you can find the bearing numbers directly on the bearings themselves when you take a hub apart. I have added a link below to our entire selection of hubs for you to come back to, or you can comment below with the caliper measurements or bearing numbers and I can see what I can find for you.
(click to enlarge)
Product Page this Question was Asked From
Trailer Idler Hub Assembly for 6,000-lb Axles - 6 on 5-1/2 - Pre-Greased
- Trailer Hubs and Drums
- Idler Hub
- Pre-Greased
- Standard
- 25580 / 15123
- Standard Grade
- For 6000 lbs Axles
- 1/2 Inch Stud
- 6 on 5-1/2 Inch
- 14-1/2 Inch Wheel
- 15 Inch Wheel
- 16 Inch Wheel
- 16-1/2 Inch Wheel
- etrailer
more information >
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Gene
5/8/2024
Is there any problems with putting the highest weight rated hub on a spindle as long as the bearings are the right size? I have 5500 pounds between my boat and trailer and have a duel axle trailer. A hub just seared off the axle and there was plenty of grease. I'm thinking the hubs were not rated high enough for the weight.