Weld-On Trailer Axle Spindle
16,000 lb Capacity – Heavy Duty 7-Bolt Flange
Part Number: 66-16K
The MAT 66-16K is a heavy-duty weld-on spindle engineered for 16,000 lb trailer axle applications. Designed for industrial and commercial hauling environments, this spindle is commonly used in tandem gooseneck, equipment, and dual-wheel trailer configurations. Professional installation and alignment are required for proper performance.
Features
- Rated for 16,000 lb axle class applications
- Weld-on design for heavy-wall axle tubes
- Integrated heavy-duty 7-bolt brake mounting flange
- Machined bearing journals for large tapered roller bearings
- Designed for commercial and industrial trailer builds
Specifications
| Capacity | 16,000 lbs |
| Inner Bearing Cone | 3984 |
| Inner Bearing Cup | 3920 |
| Outer Bearing Cone | 28682 |
| Outer Bearing Cup | 28622 |
| Seal Journal Diameter | 3.125" |
| Inner Journal Diameter | Approximately 3.50" |
| Outer Journal Diameter | Approximately 2.75" |
| Brake Flange Pattern | Heavy-duty 7-bolt |
| Installation Type | Weld-On |
Verify specifications before installation.