Trailer Hubs & Spindles

Match the hub or spindle to your trailer's axle type, bolt pattern, lug count, axle spindle diameter and length, and weight rating; verify fitment by measuring your existing hub/spindle and checking wheel bearing and seal sizes before purchase

Check the bolt pattern (e.g., 4×4, 5×4.5), stud size and thread pitch, bearing inner and outer dimensions, seal type, and flange diameter so the hub mates correctly with your wheel and accepts the correct bearings and seals

Hubs and spindles are commonly steel or cast iron; look for corrosion-resistant coatings or sealed designs if you expect moisture exposure, and choose components rated for your trailer's Gross Axle Weight Rating (GAWR) for long-term durability

Regularly inspect bearings, repack bearings with grease at recommended intervals, check torque on axle nuts, replace worn seals promptly, and clean and recoat exposed surfaces to prevent rust and contamination

Stop towing, lift the trailer and inspect for loose or damaged bearing assemblies, worn seals, or scoring on the spindle; replace damaged bearings or seals and follow proper preload/torque procedures before returning to service

You can replace a single damaged hub or spindle if the opposite side and axle are in good condition, but always ensure replacements match axle specifications and weight ratings and consider replacing both sides for matched wear and reliability

Replacement hubs and spindles commonly range from budget options under $50 to higher-quality units over $100; higher-priced parts may offer better materials, coatings, or integrated seals, but verify specifications and ratings rather than relying on price alone