DF302S | Bus steering axle
The Dongfeng DANA Coach Axle DF302S is a high-performance I-beam steering axle in the F3.0 series with a rated load of 3000kg. It is exclusively equipped with a dual-specification air brake system (φ310×120 and φ310×130 brake drums, suitable for 17.5″ wheel rims).
Core parameters are precisely optimized: wheelbase supports precise tolerance adjustment from 2053.5 to 2209 mm, with flexible layout for rim mounting distances from 1742 to 1904 mm; kingpin center distance ranges from 1444.6 to 1638 mm to enhance steering stiffness, while the 70+35 mm composite front axle drop significantly improves maneuverability on complex terrain.
Compatible with 215/75R17.5 wide-base tires and 6.00×17.5 rims, with an outer wheel steering angle of 41° (the best in the industry), and air chamber interfaces compatible with industry-standard specifications.
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.
DF302S Product Features
Craftsmanship and Load Capacity: Features a flange-forged I-beam structure with advanced technology, offering solid and reliable load-bearing capacity, covering 2.5 to 3.2-ton requirements.
Braking Performance: Standard equipped with air brake calipers (e.g., the F2.7 series uses Ø420×80 specifications), with optional ABS anti-lock braking system and automatic brake gap adjusters for efficient and stable braking.
Lightweight and Adaptability: Lightweight bridge design with adjustable kingpin and wheelbase, suitable for various commercial vehicle scenarios.
Maintenance Convenience: Requires the application of No. 2 lithium grease every 2000km, with long-lasting key components to reduce operational costs.
Technical Specifications
| Category: | Technical Parameters |
| Platform: | DF302S |
| Basic Structure: | I-beam |
| Rated Load (kg): | 2700 |
| Brake Structure/Specifications: | Air brake/φ310×120、 φ310×130、 17.5″ |
| Maximum External Width A (mm): | 2053.5-2209 |
| Rim Installation Distance B (mm): | 1742-1904 |
| Kingpin Center Distance C (mm): | 1444.6-1638 |
| Spring Distance D (mm): | 750-860 |
| Front Axle Drop (mm): | 70+35 |
| Kingpin Inclination/Wheel Camber: | 7°/1° |
| Inner Wheel Steering Angle/Outer Wheel Steering Angle: | 41° |
| Rim: | 6.00×17.5 |
| Tire: | 215/75R17.5 |
| 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 |
Model | Rated Load (Kg) | Brake Structure Form/Specification | Maximum Outer Width A (mm) | Wheel Rim | Tire | Wheel Bolt |
| DF302S | 3000 | Air brake/φ310×120、φ310×130、17.5″ | 2053.5 – 2209 | 6.00×17.5 | 215/75R17.5 | 6 – M18×1.5、6 – M20×1.5 |
| DF271S | 2700 | Air brake/φ310×100、17.5″ | 1754 – 2468 | 6.00×17.5 | 215/75R17.5 | 6 – M18×1.5、6 – M20×1.5 |
| DF252S | 2500 | Oil brake/15″、16″ | 1824.5 – 2106 | 6.00×17.5 | 215/75R17.5 | 5 – M18×1.5 |
| ——END—— | ||||||
Basic information of bus steering axle | |||
| Category | Technical Parameters | Basic Structure Form | I – beam |
| Wheel Rim Installation Distance B (mm) | 1742 – 1904 | Kingpin Center Distance C (mm) | 1444.6 – 1638 |
| Spring Distance D (mm) | 750 – 860 | Front Axle Drop (mm) | 70 + 35 |
| Kingpin Inclination Angle/Wheel Camber Angle | 7°/1° | Inner Wheel Steering Angle/Outer Wheel Steering Angle | 41° |
| 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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