Match your trailer build with axles made for leaf spring suspension. Choose the hub-face and spring-center measurements that fit your frame, and pick bare beams or assemblies with hubs and electric brakes to suit your project. For extra ground clearance, use an over/under conversion to move the springs above the tube (for double-eye springs); lift is roughly your axle diameter plus the spring pack height.
No, don't flip the axle beam itself. Use an over/under conversion that moves the leaf springs to the top of the axle. Expect lift about equal to the axle's diameter plus the height of the leaf spring pack. Verify your setup uses double-eye springs before choosing this route.
Yes, a higher-rated axle can work when it matches your hub face and spring-center measurements. Make sure your trailer frame, suspension, wheels, and tires support the new rating. If pre-welded spring seats don't fit your hanger spacing, weld new seats at the correct centers.
Match the hub face length and the spring-center-to-spring-center spacing. If the spring seats don't match your hanger spacing, plan to replace and weld new spring seats at your measurement. Confirm wheel bolt pattern and brake setup to match your current components.
A certain amount of resistance is normal. Very little resistance can indicate bearing issues, so recheck bearing setup if it freewheels too easily. Verify proper preload and that everything is greased correctly.
Confirm the axle bolts and nuts match what your trailer uses, and make sure all lock nuts are present. Some hub combos may not include the castle nut, washer, or cotter pin, so have them on hand. Check spring seat hole spacing; if it doesn't line up, set the axle orientation and drill new holes or weld seats as needed.
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