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The Jansen BM-120 is a hydraulic flail mower (mulcher) mounted on an excavator arm. It is used to maintain uncultivated and hard-to-reach land, especially to mow slopes and embankments. It cuts grass, brush and branches up to about 3–4 cm in diameter.
Uses and advantages
The mulcher can be connected to a small or medium excavator weighing 6–8 t. It needs a hydraulic system with a flow of 60–100 l/min and a working pressure of up to 200 bar. A hydraulic motor with a gear reducer drives the flail shaft through 3 toothed belts.
The shaft is 128 mm in diameter and carries 10 hammers of 1.2 kg each. The sturdy housing is built to last, and hinged galvanised flaps at the front stop stones from being thrown out. Cutting width is about 113 cm.
Specifications
- Cutting width: 113 cm
- Drive: hydraulic, gear motor
- Required oil flow: 60–100 l/min
- Working pressure: max. 200 bar
- Flail shaft: Ø 128 mm
- Rear roller: Ø 150 mm
- Hammers: 10 pcs, 1.2 kg
- Mounting: self-levelling linkage (parallelogram)
- Hoses: LSQ-S1 quick couplings, 3/4"
- Weight: 335 kg
Compatibility
Small and medium excavators of 6–8 t with a hydraulic circuit of 60–100 l/min and a case-drain (leak oil) line.
Please note: delivery and mounting
- A self-levelling linkage (parallelogram guide) is included.
- The excavator quick coupler is not included: it must be bought separately, matched to your excavator and connected to the linkage. Depending on the excavator, modifications may be needed.
- The excavator must have a case-drain (leak oil return) line for operation.
- Weight with packaging: approx. 361 kg.
See also: Flail mowers, Excavators and loaders.


