BY JACK BURKE
Bomag has developed two tandem vibratory rollers that include updated frame designs
and are powered by Tier 4 final engines.
The BW141AD- 5 and BW151AD- 5
are completely new machines that fit
into the small end of Bomag’s larger
roller line, said David Dennison, manager of marketing services/product
manager for Bomag.
“These are the smallest of our big
rollers,” Dennison said. “You’ll start
seeing them being used on coun-
ty road projects, large parking lots.
These won’t be typically used by
The new machines incorporate
what Dennison called an innovative
frame design that improves operator
visibility of the work being done. He
said the vertical members that attach
to the rollers are angled rather than
perpendicular, which improves sight-
lines on the work site.
“The operator has much better visibility of what he’s laying down, of
where the rubber hits the road, so to
speak,” he said.
The new rollers, which debuted
in Europe earlier this year and have
recently become available in North
America, are powered by liquid-cooled
Kubota V3307 CR-T four-cylinder diesel
engines rated 73.2 hp. The machines
replace Bomag’s BW141AD- 4 and
BW151AD- 4 models and are manufac-
tured in Boppard, Germany.
Offering 59 and 66 in. working
widths, respectively, the BW141AD- 5
and BW151AD- 5 rollers each deliver
up to 17,760 lb. of centrifugal force
and 4200 vibrations per minute (VPM)
— an increase of 17% from the AD- 4
series machines, Dennison said.
The increased VPM was accomplished by running the drum’s eccentric shaft at a higher rotational speed,
Dennison said. “The more vibrations
per minute in a given area, the more
impacts that given area receives, which
leads to a smoother finish,” he said.
The BW141AD- 5 roller has an operating weight of 15,211 lb., while the
BW151AD- 5 is 16,755 lb. Both have
maximum travel speeds of 7. 5 mph.
Maximum gradeability with vibration
is 30%, 40% without vibration.
The machines also incorporate a
new operator’s platform designed for
ample room and comfort, while still
offering enhanced views of the roller
drums, asphalt mat and surrounding
areas. The station’s adjustable, multi-
position seat rotates and slides later-
ally to both sides, and a travel lever
with integrated switches, the steering
wheel, and other operating controls
are designed to be within easy reach.
The rollers include Bomag’s Eco-
mode system, which is designed to
aid the operator in conserving fuel by
controlling the engine speed in relation
to load, reducing fuel consumption by
up to 30%, the company said.
Locating the water tank below the
operator’s station and placing the
engine in the rear frame contribute
to better maneuverability and reduced
noise during operation, the company
said. A crab-steer feature allows operators to offset the rear drum of the rollers
up to 6. 7 in. in either direction. Other
standard features include automatic
vibration control, speedometer, V-belt
protection, halogen working lights, indicator and hazard lights, backup alarm,
master battery disconnect switch and
Options include a mat temperature
display, ROPS cabin with heating or
air-conditioning, Bomag Telematics,
drum edge lighting and integrated
edge cutter for the rear drum. dp
The BW141AD- 5 is one of two new tandem vibratory rollers
Bomag has introduced to North America. The
BW141AD- 5 and BW151AD- 5 incorporate
Kubota Tier 4 final diesel engines.
44 DIESEL PROGRESS NORTH AMERICAN EDITION January 2014
Bomag’s new tandem vibratory rollers incorporate new frame design
offering improved visibility, Tier 4 final engines