Newly updated in 2025, the STEERTEK™ NXT optimized axle design delivers up to 25 pounds of additional weight savings compared to the previous generation, offering commercial fleets increased payload capacity and operational efficiency. STEERTEK NXT is available in capacities of 12,350 to 13,200 pounds with integrated air disc brake (IADB) knuckles and is also available up to 14,600 pounds with bolt-on disc and drum brakes. Based on Hendrickson’s proprietary design and manufacturing technologies that provide a superior strength-to-weight ratio, STEERTEK NXT serves as the durable, lightweight alternative to traditional I-beam axles.
| Nominal Load Rating | Model | Beam Width (KPI) | Center Beam Drop1 |
|---|---|---|---|
| 12,000 lbs. (5.4 t) | STK 120-212 | 69.0 in. (1753 mm) |
4.25 in. (108 mm) |
| STK 120-222 | 69.0 in. (1753 mm) |
5.36 in. (136 mm) |
|
| STK 120-112 | 70.9 in. (1800 mm) |
4.25 in. (108 mm) |
|
| STK 120-122 | 70.9 in. (1800 mm) |
5.36 in. (136 mm) |
|
| 12,350 lbs. (5.6 t) |
STK 123-112 | 70.9 in. (1800 mm) |
4.25 in. (108 mm) |
| 12,500 lbs. (5.7 t) |
STK 125-112 | 70.9 in. (1800 mm) |
4.25 in. (108 mm) |
| STK 125-122 | 70.9 in. (1800 mm) |
5.36 in. (136 mm) |
|
| 13,200 lbs. (6.0 t) |
STK 132-112 | 70.9 in. (1800 mm) |
4.25 in. (108 mm) |
| STK 132-122 | 70.9 in. (1800 mm) |
5.36 in. (136 mm) |
|
| 14,600 lbs. (6.6 t) |
STK 146-212 | 69.0 in. (1753 mm) |
4.25 in. (108 mm) |
| STK 146-112 | 70.9 in. (1800 mm) |
4.25 in. (108 mm) |
|
| STK 146-122 | 70.9 in. (1800 mm) |
5.36 in. (136 mm) |
1. Axle beam drop is measured from the kingpin intersection to the top of the axle beam.
All applications must comply with applicable Hendrickson specifications and must also be approved by the respective vehicle manufacturer with the vehicle in its original, as-built configuration. Contact Hendrickson and the respective vehicle manufacturer for approval of additional applications.
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