Hamm HD+ 120i VO Roller
Combines Vibration, Oscillation

July 21, 2016 – The 13.2-ton HD+ 120i VO tandem roller from Hamm -- introduced in 2014 -- provides conventional high frequency vibration in the front drum, and exclusive Hamm Oscillation compaction in the rear.

Advanced technology built in to the Hamm HD+ i series of smooth drum tandem asphalt compactors provides owners the highest versatility and productivity of any rollers in their class.

Other HD+ tandem rollers include the 7-ton Hamm HD+ 70i, the 8-ton HD+ 80i, the 10-ton HD+ 90i, the 11.5-ton HD+ 110i, and the 15.4-ton HD+ 140i. These models are de-livered with a variety of options, including conventional vibration compaction (VV), high frequency vibration (VV HF), exclusive Hamm oscillation compaction (VO), split drums for precise compaction on curves (VV-S), and a smooth vibratory drum/pneumatic-tire combination option (VT).

The HD+ 120i VO boasts a drum width of 78 in. The Tier 4 interim diesel engine is rated at 154 hp at 2300 rpm, and provides high power with low sound level. The roller utilizes a pressure sprinkler system with two water pumps. Spray nozzles are visible from the driver seat, and the operator platform contains a seat including a steering wheel and instrument panel which can be rotated and moved.


Rollers in Hamm’s i-Series are factory-equipped with the Hammtronic machine manage-ment system as standard, providing engine management control for considerable fuel savings, programmable speed control, and on most models, the ability to independently control vibration frequency and amplitude to either drum.

Performance options, operator comfort, visibility and ease of control are unsurpassed by any roller model. The fully adjustable seat – with integral control levers – moves together with the operator’s console completely from side to side and swivels through 180 degrees, for much better control and visibility, particularly to the drum edges.

"These machines have been developed specifically to meet the criteria of the North American contractor," said Richard Evans, vice president of sales for Hamm. "In addition, if you are a big guy, the steering column tilts up out of the way when you are climbing in or out of the seat, and the drive levers are wide, so you have plenty of room for your legs."

The HD+ series features additional operator conveniences such as large cup holders, and an adapter to enable the operator to charge a phone, or even plug in a refrigerator, which can be stored on the large cooler tray.

Unlike some competing machines, which require physical movement of weights on the side of each drum, which is hard enough to do in the daylight, let alone at night when most of the major highway work is done, amplitude and frequency adjustment on the HD+ models can be done by the operator on the control panel.

Also unique is the HD+ series' offset capability, a standard feature, which on the HD+ models is close to 7 in. "We can roll around a curb without risking damage by the rear drum and now, with the extra 3-in. offset over the older model, we now have enough for a good roller operator to pinch a joint," Evans said.

That means an operator can keep the front drum on the hot material and offset the rear drum so it can bridge between the pre-compacted hot material and the cold joint, poten-tially saving a pass for higher productivity, and avoiding travel in the other lane of traffic, for enhanced safety. This capability is not available on some competing models.


For further information, please contact:

Wirtgen America, Inc.
Ken Snover
6030 Dana Way
Antioch, TN 37013

Phone: 615-501-0600
Fax: 615-501-0691
email: Ken.Snover@wirtgen-group.com


WIRTGEN AMERICA Inc., Nashville, is the North American headquarters of the WIRTGEN GROUP, the single-source marketer of the world's most technologically advanced lines of asphalt reclaiming/recycling, concrete slipform, and surface mining equipment from WIRTGEN, asphalt and soil compactors from HAMM, asphalt pavers from VÖGELE, and construction materials processing equipment from KLEEMANN.

Reinhard Wirtgen, founder of WIRTGEN GROUP, was honored as one of the "Top 100 Private Sector Transportation Design & Construction Professionals of the 20th Century" by the American Road & Transportation Builders Association (ARTBA).

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