Boom Mowers (Hydraulic Arms)
Choosing the right equipment is the key to staying ahead of the competition and delivering projects on time. Our catalog includes machines that turn a standard tractor or excavator into a versatile work center. For companies maintaining road shoulders and drainage ditches, we have prepared reliable boom mowers that offer impressive arm reach and precise control. With them, work on steep embankments becomes safer and significantly faster, reducing operating costs on every kilometer of road.
Solutions for special tasks on every terrain
Where punching power and resistance to harsh conditions matter, our flail mowers are irreplaceable. They are designed for intensive shredding of dense grass, bushes and self-seeded plants over large green areas. If your work involves construction equipment, an excavator cutting head is the ideal choice. It allows efficient use of the carrier’s hydraulics for maintenance of slopes and watercourses, with exceptional durability of the cutting elements.
Can stumps be removed effectively without damaging the terrain?
Our offer is supplemented by specialized tools for land reclamation and forestry work. Each stump grinder we offer precisely removes post-felling residues, preparing the ground for new plantings or construction investments. Instead of using heavy equipment to pull out stumps, choose grinding — less invasive and significantly more economical.
By choosing Rolmex products, you receive technical support and access to machines designed for maximum daily efficiency.
Discover Rolmex boom mowers — professional hydraulic arm machines designed for year-round maintenance of road verges, embankments and green areas. With reach up to 11 meters, single or double telescopic extension, and reliable mechanical safety system, our boom mowers handle the most demanding tasks. Trusted by 60%+ of road administrations in Poland.
Comparison of models
| Model | Series | Max. reach [m] | Required tractor power [HP] | Min. tractor width [cm] | Min. tractor weight [kg] |
|---|---|---|---|---|---|
| DEX 450 | DEX | 4.5 (up to 4.8)¹ | 60 | — | 2600 |
| KVT450 | KVT | 4.5 | 55 | 180 | 2400 |
| KVT500 | KVT | 5.0 | 60 | 180 | 2600 |
| KR500PB | KR-PB | 5.1 | 70 | 200 | 3500 |
| KRP-500 | KRP POWER | 5.05² | 100 | — | 4000 |
| KRL-520 | KRL | 5.5 | 70 | 200 | 3500 |
| KVT550 | KVT | 5.5 | 68 | 200 | 2800 |
| KR-520 | KR POWER | 5.6 | 100 | 200 | 4000 |
| DEX 570 | DEX | 5.7¹ | 80 | — | 3200 |
| KRP-600 | KRP POWER | 6.25² | 110 | — | 4600 |
| KR-600Z | KR-Z POWER | 6.4 | 110 | 220 | 4500 |
| KRL-600 | KRL | 6.5 | 70 | 210 | 4000 |
| KR-600 | KR POWER | 6.5 | 110 | 220 | 4500 |
| KR-700Z | KR-Z POWER | 7.5 | 130³ | 230 | 5000 |
| KRV800z | KRV | 8.0 | 220 | 240 | 9000 |
| KRV900z | KRV | 9.0 | 180 | 240 | 9000 |
| KRV1050z | KRV | 10.5 | 220 | 240 | 9000 |
¹ DEX: maximum reach measured from the tractor axis to the outer edge of the head with the head in the asymmetric offset position; DEX 450 in the standard position: 4.5 m.
² KRP: arm reach from the tractor axis to the edge of the head with central mounting; forward arm extension 2.85 m (KRP-500) and 3.3 m (KRP-600).
³ KR-700Z: min. 130 HP, above 150 HP recommended.
“—” = value not given in the product specification table.
Questions and answers
Which tractor does the KR-600Z boom mower require?
The KR-600Z specification table gives a required tractor power of 110 HP, a minimum tractor width of 220 cm and a minimum tractor weight of 4500 kg. For the KR-700Z the values are at least 130 HP (over 150 HP recommended), 230 cm and 5000 kg.
Which boom mower suits a tractor of 60–80 HP?
The specification tables give a required tractor power of up to 80 HP for the KVT450 (55 HP), KVT500 (60 HP), KVT550 (68 HP), DEX 450 (60 HP), DEX 570 (80 HP), KRL-520 and KRL-600 (70 HP) and KR500PB (70 HP).
Besides power, the tractor must meet the minimum weight given in the table — from 2400 kg (KVT450) to 4000 kg (KRL-600) — and the minimum width of the model.
Which ROLMEX boom mower has the longest reach?
The KRV series: KRV800z — 8.0 m, KRV900z — 9.0 m, KRV1050z — 10.5 m, measured from the tractor axis to the outer edge of the head.
These models require a tractor of at least 220 HP (KRV800z, KRV1050z) or 180 HP (KRV900z), with a width of at least 2.4 m and a weight of at least 9 t. Outside the KRV series, the longest reach is 7.5 m (KR-700Z).
What is the difference between the KR-600Z and the KR-700Z?
The boom reach: 6.4 m (KR-600Z) and 7.5 m (KR-700Z). The KR-700Z needs a larger tractor — at least 130 HP (over 150 HP recommended), 230 cm width and 5000 kg weight — compared with 110 HP, 220 cm and 4500 kg for the KR-600Z. The power given in the table for both models is 68 HP.
How does the KRP hydraulic side-shift differ from the KR-PB fixed side-shift?
On the KRP-500 and KRP-600 the arm extends forward by 2.85 m and 3.3 m, and the position of the arms and head relative to the mounting is changed hydraulically. According to the KRP product description, this keeps the mower visible to the operator through the cab window.
The KR500PB has a fixed forward shift of 1.3 m from the axis of the mower frame.