10K Heavy Duty Oil Bath Hub Drum Assembly – 395S / 387A Bearings – Dexter 8-214-05 Replacement
Heavy-duty oil bath hub drum assembly designed for 10,000 lb trailer axles using large tapered bearings. This assembly replaces Dexter 8-214-05 and 9-27 style oil bath hub systems and is commonly used on heavy equipment trailers, dump trailers, and commercial haulers.
The hub uses a 395S inner bearing and 387A outer bearing combination with an oil bath lubrication system. Oil bath hubs allow continuous lubrication of the bearings and are commonly found on higher-capacity axles where durability, heat management, and service life are critical.
R&P Knowledge Hub
Oil bath hubs differ from grease hubs by using liquid lubricant inside a sealed hub cavity. A transparent oil cap allows quick inspection of oil level without disassembly.
Most 10K trailer axles use the large 395S inner and 387A outer tapered bearing set, but spindle variations exist between manufacturers. Always verify the bearing numbers stamped on your existing bearings before ordering to ensure correct fitment.
Dexter 8-214-05 hub drums are widely used across 10K electric brake axles. Replacement hubs must match the brake drum diameter, bolt pattern, and bearing combination to function properly with the axle spindle and brake assemblies.
Key Features
- Heavy-duty hub drum assembly for 10,000 lb trailer axles
- Oil bath lubrication design for improved bearing cooling
- Uses industry standard 395S inner and 387A outer bearings
- Compatible replacement for Dexter 8-214-05 and Dexter 9-27 assemblies
- Precision machined hub drum for smooth brake operation
- Designed for electric brake drum systems on heavy trailers
Specifications
| Specification | Detail |
| Axle Capacity | 10,000 lb |
| Hub Type | Oil Bath Hub Drum |
| Inner Bearing | 395S |
| Outer Bearing | 387A |
| Common Replacement | Dexter 8-214-05 |
| Assembly Reference | Dexter 9-27 |
| Brake Type | Electric Brake Drum Hub |
| Lubrication System | Oil Bath |
Important: Verify bearing numbers and axle specifications before installation. Trailer manufacturers occasionally use alternate bearing combinations even within the same axle rating.
Included Components
- Hub drum assembly
- Oil cap
- Cap plug
- O-ring seal
