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Technical Manual
Axles
Portal axles
Feature
• Axles in portal configuration, connected via torque tubes to the
gearbox, eccentric differential
• Axle tube and differential lie above the wheel centre
• Gear ratio step in hub reduction gear
• Uniform speed of front and rear axle in all-wheel-drive mode
• High front axle load in relation to gross weight
• Reinforced axles
1
3
2
Portal axle with hub reduction gear
Mercedes-Benz Special Trucks
Hub reduction gear
1
Wheel centre
2
Axle centre
3
Advantage
• Extreme ground clearance in conjunction with a low centre of gravity
• Enables safe driving over obstacles
• Vehicle can be driven through deep wheel tracks without
becoming stuck
• Sleek drivetrain, smaller axle housing
• Increased traction in off-road terrain
• High payload, attachment of heavy front-mounted implements
• Maximum utilisation of the vehicle by means of duly configured
implement combinations
• Higher axle loads
Axles
33
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