ZF axles ready for tyre pressure control

• Optimal tyre pressure for every application

• Consumption is reduced, tyres are conserved.

In the future ZF will be equipping its TERRAMATIC and TERRAPOWER transaxles as well as the axles in the TERRSTEER series with an integrated rotary transmission lead-through for tyre pressure control. Integrated into the complete system, the tyre pressure can always be optimally adapted to the respective driving conditions even on the move.

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Through this innovation the existing functional scope of the transmissions and axles is expanded. Apart from fuel savings and tyre conservation during transport tasks, the control of the tyre pressure also gives substantial advantages on the field. According to neutral studies, the reduced tyre pressure can increase the tractive power and consequently the coverage performance. Due to a reduced tyre pressure rolling friction can be minimized and at the same time tractive efficiency on the field can be increased.

Along with the advantages already mentioned an optimally adapted tyre pressure increases the driving stability and therefore also the safety.

Adaptation of the tyre pressure also occurs even when driving. For this, the vehicle manufacturer can directly integrate the operation of the system into the electronic and pneumatic vehicle architecture or implement it by a special control panel in the cabin.

The construction is based on a kit system. This means that the customer can order this option as an additional feature on the transmissions and axles. Through the position at the power output, the rotary transmission lead-through is fully integrated into the transmission an axle concept. The construction is suitable for both double-flow and single-flow systems. Additionally, the lines are accommodated, protected from damage, in the rim well and on the shaft bell. With a diameter of at least 10 mm the rotary transmission lead-through is also rated for use with powerful compressors and pressure accumulators, thereby giving short filling times. The seals of the rotary transmission lead-through are only under pressure during the actual pressure control, resulting in a long durability.

An overview of the features of the ZF rotary transmission lead-through:

• Lead-through for tyre-pressure control systems for ZF tractor power trains and steering axles

• Lead-through is fully integrated on the output

• Suitable for single and double-flow systems

• Adaptation of the tyre pressure even when driving

• Lines are situated protected in the rim well and on the shaft bell

• Short filling times are made possible by the large diameter in the lead-through

• Pressure is applied to the seals and sealing lips are in tight contact only during the actual control of the tyre pressure, giving increased seal durability and low friction torques