Electric Drive
Why electric?
To support our high blade density, three cutting spindles per metre of cutting width, we use an all-electric spindle drive. We developed our own electric spindle motor; each spindle is individually driven, with power supplied by a PTO-driven generator.
Compared with mechanical or hydraulic systems, this layout is highly efficient. By eliminating drive shafts, gearboxes and V-belts, the decks can be mounted for optimal ground following while still folding into compact, road-legal transport dimensions.
The result is quiet operation, low maintenance, and proven reliability from Scandinavia to Southern Europe.
Robust and service-friendly electric drive
Years of field use have allowed us to simplify the electrical system, making it straightforward for electricians and service technicians to understand and maintain. Our in-house electric spindle is based on a 400 V AC three-phase motor, built from proven, industrial-standard components.
The electric drive is designed to handle substantial loads, even under demanding mowing conditions such as dense or long grass. This robustness ensures reliable operation without the need for complex protective systems or frequent adjustments.
Most issues can be diagnosed with standard tools and resolved quickly. We also use high-quality, widely available off-the-shelf parts wherever possible, minimizing faults and making replacements easy to source—keeping downtime and service costs low.
Battery electric drive
Building on our 400 V AC electric spindle architecture, the mower decks can also be powered directly via an inverter from a high-voltage DC bus (600–700 V DC). This DC supply can come from an onboard battery pack or from a hybrid tractor equipped with a high-voltage generator.
Driving the spindle motors directly through the inverter improves overall efficiency by eliminating PTO gear trains and generator conversion losses.
For the FM343, we can supply a 65 kWh battery pack mounted behind a compact tractor in place of the generator. This preserves the tractor’s own traction battery for longer runtime and allows the FM343 to power the cutter decks from its dedicated pack for a full working shift under typical mowing conditions—while keeping the driveline simple, quiet and low-maintenance.
