JACK Flail: Struggles where mowing stops.
Remote-controlled flail mower with Y-blades, 23 HP and chain drive for slope gradients up to 100% (45°) – for fallow land, bush growth, and overgrown slopes.
The JACK Flail is a remote-controlled flail mower with chain drive, rotating Y-blades, a 75 cm cutting width and a 23 HP petrol engine, designed for the professional maintenance of the most demanding areas. Where the mulcher works cleanly, the JACK Flail excels: bracken, blackberries, young growth and woody growth up to one year old are its typical areas of application.
Why the JACK Flail is the first choice for rough areas
Y-blades for tough vegetation
Rotating Y-blades crush dense vegetation and young growth up to one year woody that sickle and mulching mowers fail to handle.
Extreme slope capability
Robust chain drive with steel insert, low centre of gravity, slope gradient up to 100% (45°).
4,000 m²/h area performance
Even large fallow areas, alpine meadows, and embankment sections are mechanically maintained in one working day.
Safe via radio remote control
200 meters range, emergency stop, automatic shutdown on signal loss, chain protection curtain. The operator is not on the slope but at a safe distance.
Technical data at a glance
| Category | Value |
|---|---|
| Product | JACK Flail |
| Engine | Briggs & Stratton 2-cylinder 4-stroke petrol engine, hybrid system |
| Power | 23 HP / approx. 17 kW |
| Starter | Electric start |
| Tank capacity | 12 liters |
| Drive | Chain drive with steel reinforcement |
| Slope (across) | up to 100% (45°) |
| Longitudinal slope | max. 30° (approx. 60%) |
| Area performance | up to 4,000 m²/h |
| Cutting height | 10–150 mm, infinitely adjustable |
| Mowing system | Flail unit with Y-blade |
| Cutting width | 75 cm |
| Remote control | Radio, 200 m range |
| Dimensions (L × W × H) | 164 × 136 × 85 cm |
| Weight | 530 kg |
| Safety | Emergency stop, shutdown on signal loss, chain guard curtain |
The flail deck with Y-blade: made for overgrown terrain
Rotating Y-blades break down dense growth where a mulching deck reaches its limits.
Technical highlights of the JACK Flail
Engine & Drive
- 23 HP Briggs & Stratton 2-cylinder 4-stroke
- Electric start even at low temperatures
- Hybrid system: petrol engine drives the cutting unit and generator, electric motors drive the tracks
- 12-liter tank for longer operating times
Mowing system
- Y-blade flail system for tough vegetation
- Area performance up to 4,000 m²/hour
- Continuously adjustable cutting height from 10 to 150 mm
- Crushes ferns, blackberry bushes, and young shoots
Terrain suitability
- Slope gradient up to 100% (45°)
- Chain drive with steel reinforcement
- Stable on uneven ground
Safety & operation
- Remote control, 200 m range
- Emergency stop and automatic shutdown on signal loss
- Chain guard curtain against ejected material
- Operator always outside the danger zone
Where the JACK Flail is the right choice
The JACK Flail is the tool for anything thicker, harder, or more overgrown than a mulch deck could handle.
Alpine farming & pasture maintenance
Suppression of bracken and young growth to maintain the pasture area.
Fallow land & area recovery
Areas that have not been maintained for a long time and are to be brought back into use.
Vineyard row maintenance
Compact construction width (136 cm) and chain drive for steep vineyard slopes in the southern Styrian wine region.
Landfills & recultivation
Robust maintenance of changing vegetation on compacted and partially contaminated soils.
Embankments with dense growth
Rail embankments, flood protection embankments, retention basins with dense growth.
Practical example: Alpine maintenance in Upper Styria
Powerfully through dense growth
The JACK Flail is designed for the toughest applications. Thanks to the robust Y-blades, it shreds blackberries, dense grass and woody growth up to one year old.
Safe operation via radio control
The radio remote control keeps the operator out of the danger zone. Stones, branches, and other foreign objects that are stirred up during flailing pose no risk to the operator.
Range up to 200 m, for maximum flexibility and safety in every operation.
Frequently asked questions about the JACK Flail
What is the JACK Flail?
A remote-controlled flail mower with chain drive and Y-blade flail system. With 23 HP, it handles fallow land, bush growth, and wild slopes with a gradient of up to 100% (45°), operated via remote control from up to 200 meters away.
What are the Y-blades designed for?
The rotating Y-blades are designed for dense vegetation and woody growth up to one year old. They reliably crush bracken, blackberries and young growth that classic sickle or mulching mowers fail to handle.
What is the difference to the JACK Mulcher?
The JACK Flail is made for dense or wild growth (woody up to one year old) (fallow land, alpine pastures, young growth). The JACK Mulcher is designed for regularly maintained areas with a fine cutting pattern. In short: flail for recovery, mulcher for maintenance cutting.
Is the JACK Flail suitable for alpine pasture maintenance?
Yes. With 4,000 m²/h area performance, chain drive for slope gradients up to 100% (45°) and Y-blades for bracken, it supports the preservation of pasture land.
What slope gradient can the JACK Flail handle?
Across the slope up to 100% (45°), uphill and downhill up to 60% (30°). The chain drive with steel insert provides high traction – an advantage over wheel-driven slope mowers.
Can the JACK Flail be used in viticulture?
Yes. With a construction width of 136 cm and chain drive, the JACK Flail is suitable for maintaining vine rows even on steep slopes, for example in the southern Styrian wine region.
How safe is the operation?
The JACK Flail is operated via radio remote control from up to 200 meters away. Safety features include emergency stop switches, automatic shutdown in case of signal loss, and a chain protection curtain.
Is the JACK Flail also available as a mowing service?
Yes. JACK Works offers a complete mowing service including machine, operator, transport, and operating costs. Details at Mowing service.
How heavy is the JACK Flail?
530 kg, heavy enough for stability on slopes, light enough for soil-friendly use.
Schlegel or mulcher? Which model fits your area?
The JACK Flail is the right choice if there is dense or heavily overgrown vegetation in the area. For well-maintained meadows, regular slope maintenance, and solar park green spaces with a fine cut, the JACK Mulcher is the more elegant solution.
Ready for the JACK Flail?
We offer free and non-binding advice, whether you want to buy, test, or book a mowing service in Styria. Send us pictures or a video of your area, and we will recommend the suitable solution.