Rely on tested quality and order components for automatic transmissions online.

Complex technology for smooth shifting

Automatic transmissions enable automatic gear changes using hydraulics, planetary gears, multi-plate clutches and control valves. They distribute power, react to the driving situation and ensure smooth starting. The components – such as planetary gear sets, pressure lines or control plates – form the heart of this technology.

Function with optimum tuning

To ensure that all components work together harmoniously, tolerances, hydraulic pressure and control channels must be precisely coordinated. Only with careful design can you achieve maximum efficiency, long-lasting function and consistent switching quality.

Automatic transmission components Automatic transmission

What should you look out for when buying:

SYSTEM TUNING

The parts used must be matched to the electronic or hydraulic control unit of your automatic transmission to ensure smooth shifting.

CABLE CROSS-SECTION

The pressure line, ducts and valve surfaces must be correctly dimensioned so that switching times, pressure build-up and feedback function optimally.

THERMIKA

The materials must withstand thermal loads, oil pressure and friction in order to maintain dimensional stability and function.

Specific challenges for truck transmissions

The components of an automatic or automated transmission in a truck are permanently exposed to extreme loads. In contrast to cars, they not only have to cope with high speeds, but above all with immense torques of sometimes over 3,000 Nm in order to move total weights of up to 40 tons or more. This requires a massive and particularly robust design of components such as planetary gear sets, shafts and shift sleeves. Automated manual transmissions (AMT) such as ZF AS-Tronic or Volvo I-Shift, which combine a high number of gears (often 12 to 16 gears) in a wear-resistant group design in order to keep the engine in the most efficient speed range at all times, dominate the commercial vehicle sector today.

Precise control and additional functions

The reliability and efficiency of these systems depends crucially on the electronic control unit (TCU) and the associated hydraulic or pneumatic actuators. These control units coordinate clutching and shifting at lightning speed in order to minimize interruptions in tractive power and optimize fuel consumption. Furthermore, truck transmissions are often equipped with essential additional functions: For example, creeper gears are essential for starting off safely with the heaviest loads or on difficult surfaces. Components for integrated, wear-free braking systems such as the intarder or retarder also take the strain off the service brake, which means a longer service life for the brake components and increased safety on long downhill journeys.

Thermal stability and durability

Due to the high power transmission and the intensive continuous load, thermal management is of the utmost importance. The transmission components must be heat-resistant and ensure constant dimensional stability. This applies in particular to the multi-plate clutches and the seals, which must be resistant to high oil temperatures and pressures in order to prevent leaks and failures. When purchasing spare parts for truck transmissions, it is therefore not only the millimetre-precise fit that is crucial, but above all the OE quality and tested material resistance to ensure maximum availability and compliance with the maintenance intervals of your fleet.

Make optimum use of performance!

With exactly the right components, you can ensure smooth shifting, efficiency and reliability. Choose precise spare parts for your transmission and bring your system up to a high technical standard.