Quincy 5120 Kubota Diesel Low Pressure Compressor

For use in the production of low pressure industrial or breathing air, the Quincy 5120 diesel framed-in package provides 95 CFM (2690 L/min) at 175 psi . With years of proven dependability as an industry workhorse, this is the standard in many dive companies and industrial uses worldwide. Our Kubota package includes a 5120 compressor block with head unloaders and a 35 hp Kubota D1803-M diesel engine with a belt guard mounted in a powder-coated steel frame with dual 60 gallon tanks, forklift slots and four-point lifting eyes.



  • Loadless start with head unloaders
  • Kubota D1803-M diesel engine with electric start
    - Liquid-cooled three (3) cylinder engine generates 37.4 hp
    - Compliant with current emission standards for destination country/state
  • Over pressure valve
  • Drain valve
  • Gate valve and plumbing
  • Hayes PTO bearing block
  • Engine instrument gauges and battery
  • 13 gallon fuel tank with sight gauge and filter
  • Additional remote fuel filter
  • Two (2) ASME rated 60-gallon volume tanks rated at 200 psi
  • Hankinson 24 Series three filter system
    - 0.003 ppm oil vapor
    - 1 micron particles
    - Differential pressure gauge
    - Auto drain
  • Four (4) diver manifold
  • Heavy duty powder-coated offshore frame with vibration isolated inner frame
  • Compressor and diesel engine equipped with independent vibration mounts
  • Air quality test results

Suggested Options

  • Carbon monoxide (CO) analyzer with high temperature shutdown
  • IMCA Certification
  • Grade D air test
  • Certified frame package (required for offshore use) includes:
    - Certified designed frame with third-party engineer sign-off
    - Weld inspection
    - Pull test
    - Serial number plate
  • Test/Tag/Certified gauges, hoses, and reliefs
  • Remote air intake to meet OSHA 29 CFR 1910.430(b) commercial diving operation requirements
  • Nuvair 100 CFM air aftercooler


Charging Rate 96 CFM (2690 L/min)
Engine Diesel
Engine Power 37.4 hp (28 kW)
Max Operating Pressure 200 psi (14 bar)
RPM 1040
Number of Stages 2
Lubrication Pressure
Air Quality Grade D Breathing Air
(L x W x H)
96 x 55 x 48 in
(1244 x 140 x 122 cm)
Weight 3000 lb (1361 kg)