How do I Choose the Correct Trailer Hubs?

Choosing the right trailer hubs requires matching specific technical data to your trailer’s axle system to ensure safety and performance. Follow these steps to determine the correct specifications:

1. Identify Load Capacity: Match the hub’s weight rating to your trailer’s axle load rating or VIN tag. Common capacities include 1,000 lbs for light loads and 3,500 lbs for medium-duty trailers.
2. Measure the Bolt Pattern: Determine the bolt circle diameter (BCD) and lug count. For example, 5 lug trailer hubs often measure 4.5 inches.
3. Check Hub Type and Compatibility: Decide between idler hubs for non-braked axles or drum hubs for braking systems. Ensure the hub bore is compatible with your spindle size.
4. Verify Bearing Sizes: Inspect the stamped codes on your existing trailer hub bearings (such as L44649 or L44610) to ensure the new bearings fit correctly.
5. Inspect Axle Dimensions: Use a caliper to measure the axle tube diameter (common sizes are 1.75, 2, or 3 inches) and the spindle length.

Axle Inc. recommends selecting quality components, such as Dexter brand hubs, which meet industry standards for testing and durability.