World Premiere of Next-Generation Axle Systems

ZF introduces new-generation axles for city and intercity buses
 

ZF globally launched its new generation of axle systems designed for future bus and coach platforms. The A134 axle reduces overall energy consumption through optimized recuperation and lightweight design while maintaining existing mounting interfaces. The AV134 portal axle delivers 20% more torque than its predecessor while cutting energy consumption by over 4%, with series production scheduled for 2027.

 

Highlights in Electrification
 

ZF released updated performance data for its electric drive systems: the CeTrax 2 dual central e-drive system has been certified under EU Regulation 2027/2400 with efficiency ≥94.5%; the new AxTrax 2 LF low-floor e-axle demonstrated 20% better energy efficiency than its predecessor in Standardized On-Road Test (SORT) cycles, and is available in 6×4 and 6×2 configurations for maximum design flexibility.

 

CeTrax 2 dual central e-drive system*

AxTrax 2 LF low-floor e-axle*

 

ZF also exhibited complementary systems supporting electrified mobility, including the ASU smart air management unit with its integrated oil-free e-comp Scroll electric compressor. These systems not only improve efficiency but also significantly reduce noise, vibration and harshness (NVH), meeting the growing demand for quieter electric bus operation.

 

ASU smart air management unit

 

Award-Winning Innovation
 

ZF's "Brake and E-Drive Synergy Solution" received the Busworld Digital Award. Based on ZF's next-generation e-drive system and the modular mBSP XBS brake system platform, the solution integrates powertrain and braking systems through advanced software, ensuring comprehensive vehicle stability control while maximizing energy efficiency and optimizing fleet operation and TCO.

 

During the exhibition, ZF also introduced its Software Update Management System (SUMS), helping bus manufacturers meet the latest regulatory requirements for secure vehicle software updates and cybersecurity in accordance with UN/ECE R156.

 

ZF Software Update Management System (SUMS)

 

Expanding Safety Portfolio
 

ZF continues to advance its ADAS technologies to enhance vehicle safety. The portfolio already fully complies with ADAS and General Safety Regulation (GSR) standards. Two new GSR-compliant solutions were displayed: an Advanced Driver Monitoring System that detects driver distraction, fatigue or unsafe operation in real time; and an Event Data Recorder that provides critical vehicle data for accident investigation and safety analysis.

 

ZF GSR II ADAS bus version

 

Strong Growth Outpacing the Market
 

Fabian Schlegel, Senior Vice President of Commercial Vehicle Solutions and Head of EMEA at ZF, said: "Over the past three years, our bus business has grown by 30%, and our order book now exceeds €1 billion. This achievement confirms that our products precisely meet market needs. From R&D to real-world application, our solutions are consistently developed with TCO as a core consideration, embedding efficiency, reliability, safety and sustainability into every product and system to create long-term value for customers. This philosophy has driven our strong business growth, outpacing the overall market and further solidifying ZF's position as a leading global partner. With deep engineering expertise, extensive global presence and proven experience in delivering innovative solutions at scale, ZF is becoming the choice for more and more vehicle manufacturers and fleet operators."