Brake Components

Description

Trailer Hub Bearing — Part 25580 — Tapered Roller, 5,200 to 10,000 lb Axles

Bearing 25580 is one of the most widely used trailer hub bearings on the road, an industry-standard number stamped directly on the bearing itself so you can always confirm you've got the right part. It's a high-quality tapered roller bearing designed for high-speed use, and it's used across a broad range of axle capacities from 5,200 lbs up to 10,000 lbs. The critical inner diameter measurement is 1.75".

This bearing pairs with race 25520 (sold separately if you don't already have your old race, or if it's worn/pitted). On a typical 7,000 lb axle setup, 25580 serves as the inner bearing, paired with 14125A as the outer bearing, 25520 as the inner race, and 14276 as the outer race. On heavier-duty 9,000–10,000 lb Dexter axles, 25580 is commonly paired with the 387A bearing as its counterpart. On #42 spindles specifically, 25580 also serves as the inner bearing, while 8,000 and 9,000 lb axle applications use it there as well, alongside the #99 spindle outer application.

Common Applications:

• Inner bearing on #42 spindle hubs (7,000 lb axles)
• Inner bearing on 5,200–10,000 lb general-purpose trailer axles
• Component of most 7K and 9-10K hub/drum kits sold in this store

Important — Race Not Included: This listing is for the bearing only. If your race is worn, pitted, or you're doing a full rebuild, you'll also need race 25520 — we carry that separately.

Compatible With / Cross Reference:

• Dexter®, etrailer, Timken (TMK44FR equivalent), and most trailer axle manufacturers using the 25580 industry-standard bearing
• Pairs with race 25520
• Common companion bearings: 14125A (7K), 387A (9-10K)

Brand:

MAT (Miller)