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Kohler J44 Generator Set

The Kohler J44 generator set is specially designed to meet the most demanding requirements, both in standby and in Prime. Explore the generator and contact us. A Best Tools representative will provide you with all relevant information, and if necessary, guide you to the perfect generator set for your project.

*For price quotes and other details, please contact us.

Product Description

General Description

Kohler J44 Diesel Generator Set, manufactured in France, with emergency and continuous power capacities of 44 kVA and 40 kVA, respectively, at a frequency of 50 Hz and a speed of 1500 rpm. Supplied voltage: 400 / 230 V.


The generator is equipped with a JOHN DEERE engine of 2.91 liters, with a maximum power of 42 kW:

  • Number of cylinders: 3
  • Fuel: Diesel
  • Cooling system type: Radiator
  • Fuel consumption at 100% load: 10 l/h
  • Fuel consumption at 75% load: 7.7 l/h
  • Fuel consumption at 50% load: 5.3 l/h


The generator set is equipped with a Kohler alternator with direct coupling, self-excited without brushes, insulation class H, protection degree IP 23, with 3 phases / 4 poles.

Constructive Elements

The generator is equipped with a 100-liter tank integrated under the chassis, electronic speed regulator, preheating system for the cooling liquid (for easy starting in cold seasons), 12V starting system, rectifier for battery charging when the generator is not running, alternator for charging the battery during engine operation, and vibration dampers placed between the chassis and the engine-alternator assembly.

APM303 Digital Controller

The control panel is user-friendly, even for unqualified personnel, designed to provide extensive details about the generator set’s operation. The controller incorporates numerous measurement instruments for the generator’s operation, signaling devices for faults and more, command keys, and indicators for various warning messages and proper operation of the entire assembly.

Soundproof Canopy

The soundproof canopy is built from durable elements, painted to the highest standards. The canopy is equipped with doors that allow easy access to the generator set’s components for quick and easy interventions. The soundproofing capacity of the canopy is impressive, reducing the noise level to 76 dB at 1 meter and 63 dB at 7 meters.

  • Soundproofed generator dimensions: L 2100 mm x W 938 mm x H 1285 mm.
  • Total weight: 868 kg.

AAR VERSO 100 S – 63 A source inverter (optional)

  • Panel dimensions: 385mm x 385mm x 193mm.
  • Protection for ±15% fluctuations in frequency and voltage;
  • Phase sequence protection for the network and the set;
  • Phase loss protection.
  • LED for signaling the phase alignment of the network and the set;
  • LED for the status of the electrical network or the set;
  • LED for the position of the contactor for the network and the set.

After-Sales Services

In addition to Kohler generator sets, Best Tools provides complete services: consultancy, training, warranties, maintenance contracts, a complete range of related equipment, delivery, installation, and commissioning. Best Tools Company technicians are directly trained by Kohler, regularly participating in training sessions organized in Brest, France. National coverage is ensured by over 15 mobile service laboratories and personnel located at key points in Romania. The central service laboratory in Bucharest meets the expectations of the premium manufacturers we represent.


Kohler was established in 1873 in the United States. In 1920, Kohler produced the first modern generator. Its generator set division has become increasingly efficient, especially after acquiring the French manufacturer SDMO Industries. Currently, Kohler is the third most important generator set manufacturer in the world, being a true trendsetter in the field.

Best Tools Company is the exclusive Kohler dealer in Romania and neighboring countries, distributing the full range of products from the renowned manufacturer, from portable generators to high-power generator sets (1 – 4500 kVA).

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