DF0551D-310 | Bus Ordinary bridge
DF0551D-310 is a mid-range drive axle introduced by Dongfeng Dana using American DANA high power density technology, designed specifically for the 6-8 meter coach market. Rated load capacity of 5,500 kg, featuring a reinforced welded axle housing with dimensions of 110×120 mm (optimized cross-sectional coefficient), and a fatigue life exceeding 800,000 cycles (10 kg lighter than comparable models).
Innovative integrated design of the differential’s driven wheel and left housing, significantly reducing noise and extending service life (minimum 70 dB).
Exclusively matched with air brake dual braking specifications (φ310×150/φ360×160, 17.5″ rim), compatible with 215/75R17.5 tires and 6.00×17.5 rims, with an adjustable air chamber center distance of 458-480mm, meeting the efficient and reliable requirements of mid-to-high-end buses.
DF0551D-310 Product Features
The axle housing features a lightweight, serialized design, facilitating vehicle layout and compatibility with multiple models.
Axle housing fatigue life: Averages over 1.1 million cycles at 2.5 times full load, far exceeding national standards.
The median fatigue life of the bevel gear gantry ranges from a minimum of 950,000 cycles to a maximum of 1.35 million cycles.
DANA’s patented high-power density gear and low-noise design technology reduces gear weight, improves gear strength, extends gear life, and reduces noise.
Technical Specifications
| Platform: | DF0551D-310 |
| Rated Load (kg): | 5500 |
| Axle Housing Type: | Stamped and Welded |
| Axle Housing Cross-Section (mm): | 110×120 |
| Rim Mounting Distance A (mm): | 1606.5 – 1800 |
| Spring Distance B (mm): | 875 – 1012 |
| Maximum Torque (N·m): | 12200 – 15000 |
| Speed Ratio: | 3.58 – 6.14 |
| Brake Type: | Pneumatic Brake |
| Brake Specifications: | φ310×150, φ360×160, 17.5″ |
| Air Chamber Center Distance C (mm): | 458 – 480 |
| 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 |
| DF0551D-310 | 5500 | 110×120 | 1606.5 – 1800 | 875 – 1012 | 12200 – 15000 | 3.58 – 6.14 |
| DF0422D-310 | 4200 | 102×102 | 1504.5 – 1670 | 875 – 952 | 12200 – 15000 | 3.58 – 6.14 |
| DF0651D-310 | 6500 | 110×120 | 1662 – 1800 | 890 – 1030 | 12200 – 15000 | 3.58 – 6.14 |
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Basic information of bus ordinary bridge | |||
| Model | DF0551D-310 | Axle Housing Type | Stamped and welded |
| Brake Type | Pneumatic Brake | Brake Specification | φ310×150、 φ360×160、 17.5″ |
| Air Chamber Center Distance C (mm) | 458 – 480 | 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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