DF601S | Bus steering axle

DF601S is a high-performance steering axle product from Dongfeng DANA. It adopts an I-beam structure with a rated load of 6000 kg.
Standard equipment includes an air brake system (specification φ400×150, compatible with 22.5″ wheel rims), with wheelbase support ranging from 2,251 to 2,538 mm for ultra-wide flexible adjustment (with a span of 287 mm, leading in the industry), and wheel rim mounting distances from 1,880 to 2,092 mm for precise layout;
The kingpin center distance of 1713.3-1853.3 mm optimizes steering stiffness; compatible with 11.00R22.5 wide-base tires and 8.25×22.5 rims, the bolt distribution circle φ335 reinforces the load-bearing structure. Scientific parameter design provides high-reliability support for bus operation, with excellent load-bearing and braking performance, meeting the stringent requirements of heavy-duty commercial vehicles.
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.

DF601S 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:	DF601S
Basic Structure:	I-beam
Rated Load (kg):	6000
Brake Structure/Specifications:	Air brake/φ400×150、22.5″
Maximum External Width A (mm):	2251-2538
Rim Installation Distance B (mm):	1880-2092
Kingpin Center Distance C (mm):	1717.3-1853.3
Spring Distance D (mm):	820-980
Front Axle Drop (mm):	85
Kingpin Inclination/Wheel Camber:	7°/1°
Inner Wheel Steering Angle/Outer Wheel Steering Angle:	45°
Rim:	8.25×22.5
Tire:	11.00R22.5
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

coming soon

Model	Rated Load (Kg)	Brake Structure Form/Specification	Maximum Overall Width A (mm)	Rim	Tire	Wheel Bolt
DF601S	6000	Air brake/φ400×150、22.5″	2251 – 2538	8.25×22.5	11.00R22.5	10 – M22×1.5
DF701S	7000	Air brake/φ400×150、φ410×180、22.5″	2045 – 2645	8.25×22.5	275/70R22.5 – 18PR	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)	1880 – 2092	Kingpin Center Distance C (mm)	1713.3 – 1853.3
Spring Distance D (mm)	820 – 980	Front Axle Drop (mm)	85
Kingpin Inclination Angle/Wheel Camber Angle	7°/1°	Inner Wheel Steering Angle/Outer Wheel Steering Angle	45°
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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