Availability of Spring Seats and U-Bolt Kit for 1-1/2" Diameter Axle
Updated 01/19/2026 | Published 08/12/2024 >
Question:
I have a small trailer that I just installed your hubs/bearing kit on and its great. While doing that job I noticed someone welded the axle to the leaf springs and one of the welds broke. Id like to go back with U bolts and spring perches but the smallest anyone shows for a round axle is 1.75. Ive measured mine with a caliper and it looks to be 1.5. I dont think the 1.75 will work, do I have any options to fix it correctly?
asked by: Darren K
Expert Reply:
Hi Darren; unfortunately we don't have anything that will fit a 1-1/2" diameter round axle. I'm only seeing options for 1-1/2" square axles when I run an internet search like our # CE23102 but it doesn't mean they don't exist.
If you can't find them anywhere else and you don't want to repair the weld I would say you need to reach out to a local fabricator. You can probably find the U-bolts at a local hardware store and have them fabricate spring seats and the U-bolt plates.
Product Page this Question was Asked From
CE Smith U-Bolt Kit for Mounting 1-1/2" Square Trailer Axles - 3-3/8" Long U-Bolts - Zinc
- Trailer Suspension Parts
- U-Bolt Kits
- Boat Trailer
- Snowmobile Trailer
- 2000 lbs
- Square Axle - 1-1/2 Inch
- 3/8 Inch Diameter
- 3-3/8 Inch Long
- CE Smith
more information >
Continue Researching
- Article: How to Accurately Measure Trailer Leaf Springs
- Q&A: Replacing Slipper Springs on Boat Trailer for 3,500 lb Axle
- Q&A: Could CE Smith Trailer Axle Have New Holes Drilled at 40 inches Apart
- Article: 5 Tell-Tale Signs It’s Time to Replace Your Trailer’s Leaf Springs
- Q&A: Replacement 1-1/2 Inch Square Axle for a Boat Trailer
- Q&A: Axle Replacement 1720 Harbor Freight Trailer
- Q&A: Recommended 26" Long 4-Leaf Double-Eye Spring for 4,000 lbs Trailer Axles
- Q&A: Replacement 24-5/8" Long Slipper Spring for a 1970's Dilly Boat Trailer
- Q&A: Replacement Axle for Trailer with 46-1/2 Inch Spring Center
- Article: What Is A Leaf Spring? (Everything You Need to Know About Trailer Leaf Suspension)
- Article: How to Tell the Weight Rating of a Trailer Axle
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Article: Where to Position the Trailer Axle?
- Article: How to Measure a Trailer Axle


Robin H.
1/19/2026
Hey Darren, were you able to find a fabricator to make the U-bolts and spring seats for your 1.5-inch axle? Knowing what solution worked could help others dealing with the same size issue.