DF231S | Bus steering axle
The Dongfeng DANA Coach Axle DF231S is a high-performance steering axle based on the F2.3 platform. It uses a forged I-beam structure and has a rated load of 2300 kg. It supports dual-specification air brake systems (φ310×120 or φ320×100 brake drums, compatible with 16″ rims), offering ultra-wide wheelbase adjustment from 1,997 to 2,093 mm and flexible rim mounting distances from 1,598 to 1,750 mm;
The kingpin center distance of 1385-1552 mm optimizes steering performance, compatible with 6.0×17.5 rims and 215/75R17.5 wide-base tires;
Kingpin inclination supports dual configurations of 8°/1° or 12°/0.5°, with an outer wheel steering angle of up to 36°; air chamber interfaces are compatible with three standards: NPT 1/4, Z 1/4, and M16×1.5, meeting the stability requirements of commercial vehicles in complex operating conditions.
We provide full life cycle services for all customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support.
DF231S Product Features
Lightweight Design: Utilizing high-strength steel precision casting, the self-weight is reduced by 15%, enhancing the energy efficiency and cost-effectiveness of buses.
Comfort and Quietness: Optimized gear meshing precision improves NVH performance by 30%, reducing driving vibrations and noise.
Efficient Braking: Standard equipped with Ø310mm air brake discs (F2.5 supports optional Ø400mm), integrated with ABS+ automatic adjustment arms, achieving a braking response time of ≤0.3 seconds.
Low Maintenance Costs: Sealed bearings combined with a centralized lubrication channel design extend maintenance intervals to 3,000 km, making it suitable for high-frequency operations in public transportation and passenger transport scenarios.
Technical Specifications
| Category: | Steering Axle |
| Platform: | DF231S |
| Basic Structure: | Forged I – Beam |
| Rated Load (kg): | 2300 |
| Brake Structure/Specifications: | Air brake/φ310×120、φ320×100、16″ |
| Maximum External Width A (mm): | 1997-2093 |
| Rim Installation Distance B (mm): | 1598-1750 |
| Kingpin Center Distance C (mm): | 1385-1552 |
| Spring Distance D (mm): | 750-806 |
| Front Axle Drop (mm): | 70+34 |
| Kingpin Inclination/Wheel Camber: | 8°/1°、12°/0.5° |
| Inner Wheel Steering Angle/Outer Wheel Steering Angle: | 36° |
| Rim: | 6.0×17.5 |
| Tire: | 7.00R16 |
| Wheel Bolts: | 6-M18×1.5、6-M20×1.5 |
| Wheel Bolt Circle E (mm): | φ205、φ222.25 |
| Wheel Toe (mm): | 1 – 3 |
| Air Chamber Interface Dimensions: | NPT1/4、Z1/4、M16×1.5 |
| Lead Time: | 15 – 30 Working Days |
| Payment Terms: | T/T, L/C |
Basic information of bus steering axle | |||
| Category | Steering Axle | Basic Structure Form | Forged I – beam |
| Wheel Rim Installation Distance B (mm) | 1598 – 1750 | Kingpin Center Distance C (mm) | 1385 – 1552 |
| Spring Distance D (mm) | 750 – 806 | Front Axle Drop (mm) | 70 + 34 |
| Kingpin Inclination Angle/Wheel Camber Angle | 8°/1°、 12°/0.5° | Inner Wheel Steering Angle/Outer Wheel Steering Angle | 36° |
| Wheel Bolt Distribution Circle E (mm) | φ205, φ222.25 | Wheel Toe – in (mm) | 1-3 |
| Air Chamber Interface Size | NPT1/4、 Z1/4、 M16×1.5 | ||
| ——END—— | |||
Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.
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Tags: Bus Steering Axle | DF231S
