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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

 

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Model

Rated Load (Kg)

Brake Structure Form/Specification

Maximum Overall Width A (mm)

Rim

Tire

Wheel Bolt

DF701S-D7500Air brake/22.5″24918.25×22.5275/70R22.510 – M22×1.5
DF651S-D6500Air brake/φ400×150、22.5″2485 – 25048.25×22.511.00R22.510 – M22×1.5
DF551S-D5500Air brake/φ400×150、22.5″2424 – 25108.25×22.511.00R22.510 – M22×1.5
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Basic information of bus steering axle

CategorySteering AxleBasic Structure FormI – beam
Rim Mounting Distance B (mm)2106Kingpin Center Distance C (mm)1813
Spring Distance D (mm)1180Front Axle Drop (mm)75+130
Kingpin Inclination Angle/Wheel Camber Angle8°/1°Inner Wheel Steering Angle/Outer Wheel Steering Angle55°
Wheel Bolt Distribution Circle E (mm)φ335Wheel Toe – in (mm)1-3
Air Chamber Interface SizeNPT1/4、M16×1.5、Z1/4Optional InformationMaintenance – free Hub Unit
——END——

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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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Sales Manager-Mrs.Wendy Fu

Spare Parts Sales-Miss. Nora Cao

After-Sales Manager-Mr. Jason Zhang

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