especificaciones de suspencion neumatica

Volvo Trucks. Trucks. Driving Progress

FACT SHEET Rear axle installat installation ion RAPD-GR

Rear air suspension, 2 axles – 1 pusher/1 driven The RAPD-GR is an air-suspended bogie with a liftable pusher axle. The 6×2 Tractor has either an electro-hydraulically steered or a fixed pusher axle. The suspension is available with single or hub reduction rear axles. RAPD-GR is optimized in two versions, with pusher axle load 7.5 or 9.0 tonnes, for long-haul transportation on good roads and for transportations on rough roads.

FEATURES FEAT URES AND BENEFITS

• Smooth air suspension suspension improves improves the driving comfort. • Steered pusher axle makes makes the truck easy to manoeuvre and gives it a tight turning circle. • Liftable pusher pusher axle reduces tyre tyre wear and fuel fuel consumption. • Excellent handling handling and stable stable driving comfort. comfort. • Adjustable drive drive axle pressure pressure for optimised traction traction on slippery roads.

Electronically controlled air-suspension system The RAPD-GR has an electronically controlled air-suspension system that improves the driving comfort and reduces the risk of damages to the cargo. The system automatically controls the chassis height during driving and ensures that the truck is in balance and compensates uneven weight for the platform, platform , even if the cargo is not evenly distributed. The manual height control with preprogrammed programme d loading dock height facilitates the goods handling.

2014-12-15 ENG Version 01

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FACT SHEET Rear axle installat installation ion RAPD-GR

Axle load limitation There are a number of differen differentt maximum drive axle load limits to choose from. Once the drive axle load limit is exceeded a lifted pusher axle is automatically lowered. If the maximum drive axle load 11.5 tonnes (RALIM115) is chosen, the function “Lift+30” is availab available le by the electronically controlled suspension. This makes it possible to lift the pusher axle when the drive axle load is less than RALIM+30% (14.95 tonnes) and the speed is lower than 30 km/h. If over speed or over load deactivates the “Lift+30” function, the bogie switch/lift button must be pressed again once the conditions allow a new activation of Lift+30. The “Lift+30” results in improved traction when operating on slippery roads and increased manoeuvrabilityy in confined spaces where one does not want the manoeuvrabilit pusher axle scrubbing across the ground. To protect the front axle load duri ng lift and dump of pusher axle the front axle load is limited according to the front axle load (FAL), specified for the vehicle.

SPECIFICATION Type designation .............................................. ................................................................................RAPD-GR ..................................RAPD-GR Pusher axle features: El. hydraulic....... hydraulic......................................................... .....................................................................................PU-EHYS ...................................PU-EHYS Fixed ......................................................................................................... ......................................................................................................... PU-FIXS Bogie spread............................................. .........................................................................................1320 ............................................1320 mm Bogie load ..........................................................................19, ..........................................................................19, 20.5, 22 tonnes Load distribution: 19 tonnes........................................... ...................................................................................11.5/7.5 ........................................11.5/7.5 tonnes 22 tonnes............................................................................ .......................................................... .............. 13/9 tonnes Suspension: Air suspension ............................................................................ ................................................................................... ....... Six bellows Travel stroke..........................................................................................+160/–70 ..........................................................................................+160/–70

Compact stabilizer installation The drive axel is equipped with a forward facing stabilizer bar which gives both well directed stabilizing forces forces and no stabilizer protruding behind the rearmost tyres. For the pusher axle with the pusher suspension concept (spring link concept) the springs (dual leaves) and the axle itself work like a roll stabilizer stabilizer.. This installation gives excellent handling and stable driving comfort.

2014-12-15 ENG Version 01

2 (2)