Fayat Group BOMAG BW 27 RH-4i, Service Manual, Page: 35 / 41

Rubber tire roller
BOMAG 35 008 922 89
2.1
high weight of the rollers (up to 27 t) generates vertical pressure combined with horizontal forces to all directions
under the wheels.
Fig. 13
Flexible weight adaptation
The BOMAG rollers BW 24 RH and BW 27 RH can be flexibly adapted to the corresponding compaction task.
Various ballasting modes can be used for this purpose. The rollers can be pre-ballasted with individual weight
(which are pushed in below the frame). The large ballast compartment (approx. 3.5 m
3
) can be filled with sand
or scrap steel for flexible weight adjustment. The version with water tight welded frame (option) can also be filled
with water.
The correct contact pressure
Fig. 14 Tire pressure
The success of compaction is mainly determined by a correct contact pressure. For this purpose the tire pres-
sure can be varied from 2 - 8 bar. High air pressure for a better depth effect of compaction - important for eco-
nomical processing of thick soil or asphalt layers. For thin surface layers you should considerably lower tire
pressures. The air pressure is generally set in such a way, that a level tire contact are is achieved. An arched
profile should be avoided.
Air pressure too high
Correct air pressure
Air pressure too low