DF701S | Bus steering axle

The Dongfeng Dana Coach Axle DF701S is a high-performance I-beam steering axle in the F6.0, F7.0, and F8.0 series with a rated load of 7000 kg, suitable for air brake dual brake specifications (φ400×150 or φ410×180 brakes, 22.5″ wheel flange);
Core parameter breakthroughs: Industry-leading widest wheelbase adjustment range of 2045-2645 mm (600 mm span) and ultra-large rim mounting distance of 1967-2468 mm for flexible layout; Main kingpin center distance of 1,815 mm enhances steering rigidity, while a composite front axle drop of 105+37 mm improves maneuverability on complex terrain;
Standard equipment includes 8.25×22.5 rims and 275/70R22.5-18PR heavy-duty tires, with optional maintenance-free hub units, providing reliable load-bearing and braking performance for heavy-duty buses.
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 Product Features

Heavy-duty design: Covers the 6.0 to 8.0 ton class, with the bridge body made of high-strength alloy steel in one piece, improving torsional rigidity by 40% and suitable for heavy-duty applications such as BRT and double-decker buses.
All-around quiet technology: Spiral bevel gears with precision grinding + active electromagnetic noise reduction, NVH optimized by 50%, driving noise ≤58dB (high-speed conditions).
Intelligent Braking Safety: Standard dual-circuit air brakes + EBS + hydraulic retarder, integrated with ESP vehicle stability control system, response time ≤0.1 seconds, braking distance reduced by 25%.
Million-Kilometer Maintenance-Free: IP6K9K fully sealed design + intelligent temperature-controlled lubrication system, key components (gears/bearings) with a lifespan of ≥1 million kilometers, maintenance intervals exceeding 100,000 kilometers.

Technical Specifications

Category:	Steering axle
Platform:	DF701S
Basic Structure:	I-beam
Rated Load (kg):	7000
Brake Structure/Specifications:	Air brake/φ400×150、φ410×180、22.5″
Maximum External Width A (mm):	2045 – 2645
Rim Installation Distance B (mm):	1967-2468
Kingpin Center Distance C (mm):	1815
Spring Distance D (mm):	820-1180
Front Axle Drop (mm):	105+37
Kingpin Inclination/Wheel Camber:	7°/1°
Inner Wheel Steering Angle/Outer Wheel Steering Angle:	47°
Rim:	8.25×22.5
Tire:	275/70R22.5 – 18PR
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

coming soon

Model	Rated Load (Kg)	Brake Structure Form/Specification	Maximum Overall Width A (mm)	Rim	Tire	Wheel Bolt
DF701S	7000	Air brake/φ400×150、φ410×180、22.5″	2045 – 2645	8.25×22.5	275/70R22.5 – 18PR	10 – M22×1.5
DF601S	6000	Air brake/φ400×150、22.5″	2251 – 2538	8.25×22.5	11.00R22.5	10 – M22×1.5
DF801S	8000	Air brake/φ410×180、22.5″	2457 – 2503	9.00×22.5	315/80R22.5	10 – M22×1.5
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Basic information of bus steering axle
Category	Steering Axle	Basic Structure Form	I – beam
Rim Mounting Distance B (mm)	1967 – 2468	Kingpin Center Distance C (mm)	1815
Spring Distance D (mm)	820 – 1180	Front Axle Drop (mm)	105 + 37
Kingpin Inclination Angle/Wheel Camber Angle	7°/1°	Inner Wheel Steering Angle/Outer Wheel Steering Angle	47°
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
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