DF701S-D | Bus steering axle
The Dongfeng DANA Coach Axle DF701S-D is a high-performance I-beam steering axle based on the F7.5-D platform with a rated load of 7500 kg (the highest in the entire series) and a standard air brake system (compatible with 22.5″ wheel rims).
It uses a 2491 mm fixed wheelbase precision layout and a 2106 mm wheel rim mounting distance to enhance structural stability. The kingpin center distance of 1,813 mm optimizes steering stiffness, while the 75+130 mm composite front axle drop significantly improves off-road capability; the outer wheel steering angle reaches 55° (industry-leading maneuverability), and the kingpin inclination angle of 8°/1° optimizes handling stability;
Compatible with 275/70R22.5 wide-base tires and 8.25×22.5 rims, featuring 10-M22×1.5 high-strength bolts combined with a φ335 bolt distribution circle to ensure safety under heavy loads.
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.
DF701S-D Product Features
Electric Drive Heavy-Duty: Specifically designed for pure electric/hybrid buses, with a load capacity range of 5.5 to 7.5 tons, peak torque output increased by 40%, suitable for intercity/BRT heavy-duty scenarios.
All-around quiet operation: Electric drive-specific gears + active noise reduction system, NVH optimization of 50%, driving noise ≤60dB (urban conditions).
Intelligent electric control braking: Integrated EBS+ESP+energy recovery system, response time ≤0.1s, braking recovery efficiency >20%, supports optional electromagnetic retarder.
Extended maintenance-free operation: IP6K9K fully sealed design + intelligent temperature-controlled lubrication, key components (bearings/motor shaft) lifespan ≥ 800,000 kilometers, maintenance interval exceeding 100,000 kilometers.
Technical Specifications
| Category: | Steering axle |
| Platform: | DF701S-D |
| Basic Structure: | I-beam |
| Rated Load (kg): | 7500 |
| Brake Structure/Specifications: | Air brake/22.5″ |
| Maximum External Width A (mm): | 2491 |
| Rim Installation Distance B (mm): | 2106 |
| Kingpin Center Distance C (mm): | 1813 |
| Spring Distance D (mm): | 1180 |
| Front Axle Drop (mm): | 75+130 |
| Kingpin Inclination/Wheel Camber: | 8°/1° |
| Inner Wheel Steering Angle/Outer Wheel Steering Angle: | 55° |
| Rim: | 8.25×22.5 |
| Tire: | 275/70R22.5 |
| Wheel Bolts: | 10-M22×1.5 |
| Wheel Bolt Circle E (mm): | φ335 |
| Wheel Toe (mm): | 1 – 3 |
| Air Chamber Interface Dimensions: | NPT1/4、Z1/4、M16×1.5 |
| Optional Information: | Maintenance-Free Hub Unit |
| Lead Time: | 15 – 30 Working Days |
Model | Rated Load (Kg) | Brake Structure Form/Specification | Maximum Overall Width A (mm) | Rim | Tire | Wheel Bolt |
| DF701S-D | 7500 | Air brake/22.5″ | 2491 | 8.25×22.5 | 275/70R22.5 | 10 – M22×1.5 |
| DF651S-D | 6500 | Air brake/φ400×150、22.5″ | 2485 – 2504 | 8.25×22.5 | 11.00R22.5 | 10 – M22×1.5 |
| DF551S-D | 5500 | Air brake/φ400×150、22.5″ | 2424 – 2510 | 8.25×22.5 | 11.00R22.5 | 10 – M22×1.5 |
| ——END—— | ||||||
Basic information of bus steering axle | |||
| Category | Steering Axle | Basic Structure Form | I – beam |
| Rim Mounting Distance B (mm) | 2106 | Kingpin Center Distance C (mm) | 1813 |
| Spring Distance D (mm) | 1180 | Front Axle Drop (mm) | 75+130 |
| Kingpin Inclination Angle/Wheel Camber Angle | 8°/1° | Inner Wheel Steering Angle/Outer Wheel Steering Angle | 55° |
| Wheel Bolt Distribution Circle E (mm) | φ335 | Wheel Toe – in (mm) | 1-3 |
| Air Chamber Interface Size | NPT1/4、M16×1.5、Z1/4 | Optional Information | Maintenance – free Hub Unit |
| ——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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