12,000 lb Heavy-Duty Axle Spindle — Fits Dexter 12K Axles
The TAD12K replacement spindle is built for Dexter 12K axles and engineered to restore structural integrity and bearing alignment on heavy-duty equipment trailers. Constructed from forged high-carbon steel and machined to tight tolerances, this spindle supports commercial, industrial, and agricultural workloads where reliability is critical.
| Specification | Detail |
|---|---|
| Axle Rating | 12,000 lb Dexter axle |
| Material | Forged high-carbon steel |
| Finish | Machined/raw steel |
| Weight | ~17.5 lb |
| Includes | Single spindle |
Designed exclusively for Dexter 12K hubs, seals, and brake systems. For best results, verify bearing and race part numbers before ordering to ensure correct compatibility.
12K HD Spindle – Dimensional Reference
| Section | Diameter / Size | Description |
|---|---|---|
| Threaded End | 1.75" | Spindle threads for axle nut |
| Inner Seal Surface | 2.25" | Seal journal surface |
| Inner Bearing Journal | 2.625" | Inner bearing seating surface |
| Bearing Shoulder | 3.125" | Shoulder step before hub seat |
| Hub Shoulder | 4.00" | Hub mounting shoulder diameter |
| Outer Spindle Body | 3.30" | Main spindle body diameter |
| Overall Length | 12.93" | Total spindle length |
Applications
- Heavy-duty flatbeds
- Industrial transport trailers
- Dump & lowboy trailers
- Farm equipment haulers
- Commercial fleets and rebuild shops
Installation Notes
Cut the old spindle approximately 1" from the weld and grind smooth for a clean fit. Align the new spindle using an alignment fixture or clamp. Due to the heavier load rating of 12K axles, ensure full 360° weld penetration and proper preheat in colder shop environments. Replace all bearings, races, and seals upon reassembly.