TRIDEC TD Mechanical Steering System

Mechanical
Rigid Axle

Mechanical steering for distribution trailers
Available for one or two steered rear axles
Designed to improve manoeuvrability in urban delivery operations
Direct, play-free steering via the fifth wheel unit and steering bar
10 t axle load; 15 / 20 t fifth wheel load
Steering angles from 21° to 40°
Additional configurations available on request

Built for Urban Distribution

TRIDEC TD is designed for distribution transport where trailers need to operate in confined delivery locations, city streets, and small roundabouts. The system can steer the rear axle, or the two rearmost axles, of a one-, two-, or three-axle trailer.

Distribution and urban delivery transport
One-, two-, and three-axle trailers
One or two steered rear axles

Designed for Better Manoeuvrability

Superior manoeuvrability in distribution transport

Steers the rear axle, or the two most rear axles, on 1- to 3-axle trailers
Steering angles 21° / 26° / 28° / 30° / 32° / 36° / 40° at the last axle
21° possible with a fifth wheel unit mounting height of 135 mm
Easier inner-city deliveries and small roundabouts on urban roads
More efficient trailer use in confined spaces

Lower operating costs

Amount of runs due to larger vehicle
Time through better manoeuvrability
Fuel consumption
Tyre wear
Accessibility
Vehicle damage

Direct, play-free mechanical steering

Motion via the fifth wheel plate and TRIDEC steering wedge
Steering bar transmits movement directly to the axle mounting frame
Steering rod links the two rearmost axles when two axles are steered
Three fifth wheel versions: TD-K, TD-T, and TD-G
Fifth wheel loads 15 / 20 t; 10 t axle load (legally approved)
RDW test report per EEC R79 (no. 56210026)
JOST turntable with TRIDEC spline bolts — no re-tightening required
TRIDEC patented maintenance-free bearings on steering bar joints

Flexible fit and easy installation & maintenance

Spring centres 980 / 1100 / 1200 / 1300 mm
Axle mounting frame heights: 140 mm standard, 30 mm or 100 mm optional
Front and rear steering bar offset configurations for chassis height differences
Easy steered-axle alignment via shim-set on the steering bar
Mounting profiles welded into chassis for simple, quick installation
Centralized greasing block; thrust-plate welding no longer required
Optional mudguard supports and galvanised axle mounting frames