DF0422D-310 | Bus Ordinary bridge
The DF0422D-310 is Dongfeng DANA’s first drive rear axle to adopt American DANA’s high power density technology, filling the market gap in the 9,600–15,000 N·m torque range.
With a rated load of 4,200 kg, it features a 102×102 mm stamped and welded axle housing (optimized cross-section design), offering a fatigue life exceeding 800,000 cycles and a total assembly weight 10 kg lighter than comparable models. The innovative integration of the differential-driven wheel with the left housing significantly reduces meshing noise to 70 dB (industry-leading) and extends gear life.
Compatible with dual braking systems (φ320×100 hydraulic brakes or φ310×120 pneumatic brakes, 17.5″ rim), and compatible with 215/75R17.5 wide-base tires, it is a high-reliability solution for the 6-8 meter bus market.
DF0422D-310 Product Features
The integrated design of the differential’s driven gear and left housing reduces connecting parts, lowering contact and bending stresses on the tooth surfaces, ensuring low weight, excellent rigidity, longer gear life, and reduced gear meshing noise.
The axle housing has an optimized cross-sectional modulus, enhancing the rear axle’s load-bearing capacity and achieving a fatigue life of over 800,000 cycles.
Utilizing DANA gear design, manufacturing, and testing technology, noise levels are as low as 70dB.
The lightweight design makes the rear axle assembly over 10kg lighter than similar axles.
Technical Specifications
| Platform: | DF0422D-310 |
| Rated Load (kg): | 4200 |
| Axle Housing Type: | Stamped and Welded |
| Axle Housing Cross-Section (mm): | 102×102 |
| Rim Mounting Distance A (mm): | 1504.5-1670 |
| Spring Distance B (mm): | 875-952 |
| Maximum Torque (N·m): | 12200-15000 |
| Speed Ratio: | 3.58-6.14 |
| Brake Type: | Oil brake / Pneumatic Brake |
| Brake Specifications: | Oil brake φ320×100、Pneumatic Brake φ310×120、 17.5″ |
| Air Chamber Center Distance C (mm): | 438 – 478 |
| Adapted Wheel Rim: | 6.00×17.5 |
| Adapted Tire: | 215/75R17.5 |
| Wheel Bolt Circumference D (mm): | φ222.25 |
| Wheel Bolts: | 6 – M20×1.5 |
| Lead Time: | 15 – 30 Working Days |
| Payment Terms: | T/T ,L/C |
Model | Rated Load (kg) | Axle Housing Section (mm) | Rim Mounting Distance A (mm) | Spring Distance B (mm) | Maximum Torque (N·m) | Speed Ratio Series |
| DF0422D-310 | 4200 | 102×102 | 1504.5 – 1670 | 875 – 952 | 12200 – 15000 | 3.58 – 6.14 |
| DF0551D-310 | 5500 | 110×120 | 1606.5 – 1800 | 875 – 1012 | 12200 – 15000 | 3.58 – 6.14 |
| DF0651D-310 | 6500 | 110×120 | 1662 – 1800 | 890 – 1030 | 12200 – 15000 | 3.58 – 6.14 |
| ——END—— | ||||||
Basic information of bus ordinary bridge | |||
| Model | DF0422D-310 | Axle Housing Type | Stamped and welded |
| Brake Type | Oil brake / Pneumatic Brake | Brake Specification | Oil brake φ320×100、Pneumatic Brake φ310×120、 17.5″ |
| Air Chamber Center Distance C (mm) | 438 – 478 | Adapted Wheel Rim | 6.00×17.5 |
| Adapted Tire | 215/75R17.5 | Wheel Bolt Distribution Circle D (mm) | φ222.25 |
| Wheel Bolt | 6 – M20×1.5 | ||
| ——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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