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Pusher and tag axles

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Terberg Techniek pusher and tag axles


The Terberg Techniek Modulair Axle Conversion (TTMAC) system is a conversion kit for mounting and/or steer an additional pusher or tag axle on Volvo trucks. The system offers lifting options, while the axle is steered electronically-hydraulically. Due to its modular characteristics a big scope of axle configurations on the truck is available.

This conversion product-line consists of three different axle types and all three axles can be fitted as pusher or tag axle.
Available axles:

  • SISU FSND-10P, front axle with disc brakes
  • Volvo FAL9, front axle with disc brakes
  • Volvo FAL9, front axle with drum brakes

The construction is mainly based on the Volvo RAD-A4 suspension and uses therefore a big amount of original Volvo parts, such as, air-bellows, stabilizer, V-stay, reaction arms and brackets as well as the hydraulic steering valve. This has huge advantages in the after market segment. Service and maintenance as well as parts availability are backed up by the reliable Volvo network.

The construction, steering and suspension are fully integrated in the vehicle. The system is running in several countries in Europe and also in (heavy) mining operation in South America.

For an extra 10 tons of payload, the SISU axle is an excellent choice. This axle is used in military vehicles and has proven its reliability over and over again. Technical permissible load is 10.000kg and a static axle load capacity of 33.000kg for container handling purposes.

The suspension has 4 air-bellows which are connected to the other axles' air bellows for a perfect weight distribution. The system can also be fitted on leaf suspended vehicles. The package comes with a lifting device for lifting the axle when the vehicle is not fully loaded. The Terberg Techniek axle will come down automatically when the vehicle is loaded. Optional is an air-dump function which can be added for more traction on slippery ground.

The steering system is controlled by Terberg software and a mix of high-quality Terberg Techniek parts (steering cylinder) and original Volvo parts (hydraulic steering valve). Steering geometry, based on the vehicle configuration, is adapted by the software, which makes it easy to position the additional axle on several places and expand the scope of application. The axle steers only when necessary, when lifted the axle will point in the straight forward position. Meanwhile the steering angle is depending on the vehicle speed. At high speeds, for instance, a tag axle will not steer anymore, to increase drivability and stability of the vehicle.

Terberg Techniek fits not only the axle, but can also be a partner in preparing the vehicle for a specific body. During our modification it is easy to take body builders wishes into consideration. Terberg Techniek will also deliver assistance in the homologation/legislation process, or take over the legislation trajectory completely.

The Terberg Techniek axle modifications are designed from a "truck-point-of-view", delivering you a reliable and efficient automotive solution.

BENEFITS:

  • Construction based on Volvo RAD-A4 suspension, large Volvo content
  • Hydraulically-electronically steering system, controlled by Terberg ECU's, fully separated from Volvo systems, leaving the basic vehicle as original as possible
  • Service, maintenance and parts backed up by Volvo network
  • Maximum steering angle: approx. 25 degrees
  • Additional weight complete assembly: approx. 1400 kg
  • Safe, vehicle-speed depending steering system
  • Four (4) air-bellows suspension compatible for air-suspended as well as leaf-suspended vehicles
  • Braking system of the additional axle adjusted to the basic vehicle
  • Standard: lifting device
  • Standard: heavy stabilizer
  • Optional: air-dump
  • Optional: Axle load limiter
  • Legislation assistance
  • Proven reliability

At the following pages there are a few examples using the TTMAC construction. Perhaps your vehicle is displayed. If this is not the case, and you are interested in our solution, please contact us. Due to the modular structure of our system, there is a good chance we can fulfill your wishes.

Jim Nicolay

For more information, please contact our commercial technical department:

Jim Nicolay

Function > Commercial Technical Employee
Tel > +31 (0) 30 600 62 60
Fax > +31 (0) 30 688 55 23
E-mail > JNicolay@terbergtechniek.nl