Cummins Onan

Commercial HG 8000

Cummins Onan Commercial Generator

Commercial HG 8000

  • Cummins Onan custom engineered hydraulic generator set system
  • High motor starting capability
  • Meets NFPA 120° F (49° C) ambient standard
  • Single side serviceability
  • Powder coated steel housing/multiple air inlets (4)
  • Four-point vibration isolated mounting system
  • Digitally controlled pump flow for minimal voltage and frequency variation
  • Hydraulic circuit has over speed and under speed protection
  • Five year, 1000 hour limited warranty
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Standard Features

  • Hydraulic components:
    • Variable displacement piston pump
    • Gear motor drive
    • Digital control maintains tight frequency control
    • Electronically controlled orifice stops fluid flow when system is off
    • Largest heat exchanger in the industry
  • Generator set housing:
    • Powder and clear coated steel
    • Single side serviceability
    • Multiple air inlet locations (5)
    • Single side interface for all hook-ups
    • Installs without removing housing
    • Four-point vibration isolated mounting system
  • Generator set output:
    • 120/240 single phase, 4-lead
    • 10 ft power leads in non-metallic conduit
    • Digital PWM control maintains stable frequency
    • Circuit breakers (OEM/distributor supplied)
    • Capped voltage regulator
    • Factory load tested
  • Controls and displays:
    • Cummins Onan display by FRC with 15 ft harness; displays Hz, volt, amps, oil temperature and hours
    • Continuous on/off switch for generator set (customer supplied)
    • Solid state voltage regulation
  • Reservoir:
    • 3 Gal hydraulic tank with integral filter
    • Filter with element condition indicator gauge, breather, and fill port
    • Mounting tabs for universal mounting
  • Accessories:
    • Side discharge duct kit (p/n 541-0873)
    • Extension harnesses (see Operation and Installation manual)

Weight &Size

Weight: 247 lb (112 kg)

Size: Length 31.0 in (787 mm), width 16.0 in (405 mm), height 13.8 in (350 mm)

Model Ratings

Models Hz Watts Voltage Amps PF Phase Circuit breaker
8RBAB-2010C 60 8000 120/240 67/33 1.0 1 Installer supplied

pdf image Specification sheet   pdf image Operator manual

– All 60 Hz models operate at 3600 r/min.
– Required pump speed 850-3200 r/min
– Pumps are ordered separately from generator and are required for generator operation.
– Cummins Onan tested for operation with cooling air inlet temperature up to 120° F (49° C)
– Pumps are ordered separately from generator and are required for generator operation.


The Cummins Onan limited warranty covers virtually everything except routine maintenance for the first five years that you own your generator set, or the first 1,000 hours of operation, whichever comes first. In addition, it includes a free 90-day adjustment policy, which provides that Cummins Inc. will make minor adjustments to your new generator set during the first three months you own it – free of charge!

Travel time repair allowance: In addition to the 5-year, 1000-hour warranty, a travel time repair allowance of 2.5 hours and mileage cost up to 100 miles included for the first 2 years.

pdf image manufacturer's limited warranty