Kubota J112 generator


J Series

  • Prime Output 12.0 kVA (12.0 kW)
  • Standby Output 13.2 kVA (13.2 kW)
  • Frequency: 50 HZ
  • Phase: Single
Features & Benefits


  • The generator and the engine are direct-coupled to ensure a more reliable power supply with minimum power loss.
  • The J-Series uses a transistor AVR to ensure a stable flow of current for most jobs.
  • The waveform distortion is kept to a minimum by the skewed rotor, while the damper winding protects the generator during short circuits, regulates voltage fluctuations during condensive loads, and withstands load fluctuations during condensive and non-linear loads.

Clean Emissions

  • This generator uses Kubota original E-TVCS combustion to produce less soot, HC and CO emissions.

Easy Operation

  • Advanced design and engineering minimized both space and weight for easy use and storage.
  • Key switch, voltage meter, circuit breaker, and warning lamps are all conveniently gathered on a drip proof control panel.
  • The larger capacity fuel tank enables longer periods of continuous operation on a single tank.


  • One-point lifting eye and special forklift openings enhances transportability.

Simple Maintenance

  • Most gauges and filters are conveniently situated to simplify daily maintenance.
  • A double element air filter is used in the J-Series for heavy-duty use, and to protect the generator from sand-caused damages.


  • Automatically shut the engine down in case of abnormalities in oil pressure, water temperature, and when the Fan belt breaks.
  • Protective covers are attached on all output terminals to prevent electric shocks.
Type-Revolving field, AC generator
Standby OutputkVA (kW)13.2 (13.2)
Prime OutputkVA (kW)12.0 (12.0)
Voltage - Single PhaseV220
Phase / Wire-1/2
Power Factor-1.0
No. of Poles-2
InsulationClassRotor coil; class F, Stator coil; class B
Type of Coupling-Direct coupled
Single Phase 110VAN/A
Single Phase 127VAN/A
Single Phase 220VA54.5
Single Phase 240VAN/A
Three Phase 220VAN/A
Three Phase 380VAN/A
Three Phase 415VAN/A
Type-Vertical, water-cooled, 4-cycle diesel engine
No. of Cylinders-3
Bore x Strokemm76.0 x 73.6
Engine Speedrpm3000
Continuous Rated OutputkW (HP)14.4 (19.3)
Lubricant (API classification)-above CD grade
Oil Capacity4.3
Coolant Capacity3.3
Starting SystemElectric - 12 volt DC
Fuel Consumption-Diesel fuel No.2 (ASTM D975)
at Full LoadL/h (gal./h)4.6 (1.2)
at 3/4 LoadL/h (gal./h) 3.7 (1.0)
at 1/2 LoadL/h (gal./h)3.0 (0.8)
at 1/4 LoadL/h (gal./h)2.4 (0.6)
Fuel Tank Capacity - Continuous Operation Hours
at Full Loadh17.0
at 3/4 Loadh21.2
at 1/2 Loadh26.1
at 1/4 Loadh33.5
Battery (Ah/5 h)-12 V (55 Ah)
Dimensions L x W x Hmm1215 x 611 x 922
Approx. Net Weightkg340
Sound Level (Full Load at 23 ft. [7m])dB (A)76.5
Emergency Stop System-In case of abnormal: Oil pressure, water temperature, fan belt broken