What are the parts of a trailer axle?
straight trailer axle assembly includes axle tube with spindles, castle nuts and cotter pins, flanges for mounting drum or disc brakes (not included), cast iron 5 on 4½” hubs with bearings, seals, grease caps and lug nuts, double eye leaf springs with U-bolts, nuts and tie plates.
What is the back of a trailer called?
The panels that hang off the back are often called rear tail fairings, trailer tails, or sometimes boat tails. Whatever you call them, their purpose is to reduce drag and save fuel.

What is an axle on a trailer?
In the most basic terms, the axle is a shaft that transfers the trailer weight and drive to the wheels. This simple-sounding shaft, though, may be the most complex part of the trailer.
Can you strengthen a trailer axle?
The trailer load limit is the capability of its weakest portion. We can strengthen the frame, yes, but we must also upgrade the load bearing components — axles, springs, hitch parts, tires, jacks, safety chains, etc. Don’t forget the hitch parts, and tongue jack.

When should I replace my spindle?
A spindle that has had excessive heat from a burned bearing will be damaged to the point that it needs replacing. Sometimes the bearing is stuck on the spindle and cannot be taken off. Other times the spindle is obviously damaged due the bearing burning up and hub falling on the axleshaft which rides on the spindle.
What do you call the head of the trailer?
Description. A trailer has a long cargo bay and is able to carry large-size cargo and/or more cargo than can be carried on a truck. Cargo bay unit is called “trailer”, and the front unit with driver’s seat is called “tractor” or “trailer head.”
What does 3 axles mean?
A tri-axle vehicle is a truck, tractor, or trailer with three axles grouped together at the rear. Tri-axle vehicles are primarily used to haul heavy loads. The multiple axles and wheels allow for better weight displacement and stability. Dump trucks, tow trucks, and cement mixers usually have a tri-axle design.
What is a trailer idler axle?
An idler is a hub that is no provisions for trailer brakes. It has no brake drum. Part #8-276-5 is an example of a hub/ drum that has a brake drum that… view full answer…
Can you put leaf springs on top of axle?
Can I Put the Leaf Springs on Top of the Axle to Give me More Tire Clearance. Expert Reply: Yes, you can move your springs on top of the axle to gain more tire clearance. Doing this will raise the height of your trailer by the height of your axle and the thickness of your leaf springs.
How do I know if my spindle is bad?
Fretting is one of the most common and most noticeable types of wear, and is created by the toolholder slipping inside the spindle. Any toolholders with visible fretting should be replaced and if you notice that the replacement develops fretting quickly, it’s an indication that the spindle is the issue.
Can you repair a trailer spindle?
As long as the spindle end is not split or metal is missing, the end can be welded up, machined down, and rethreaded. A spindle that has had excessive heat from a burned bearing will be damaged to the point that it needs replacing.
Can you weld on a trailer axle?
If you’re interested in welding your own trailer axle, then we can provide the perfect kit to help you get the job done. Our weld-your-own trailer axle kits come with the spindles, hubs, and bearing kits that you need to get started on your axle. All you’ll need is the axle beam!