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Coming soon – The all new Rotair D425T4F! Re-designed from the ground up to be the best mid range compressor value by far! Quiet, compact, and designed for rental versatility – go from 100 psi to 150 psi with a flick of a switch. Powered by a Cummins QSB3.8 Tier 4 Final diesel engine, a rugged power plant designed for ease of maintenance with 500 hour service intervals. Watch this space for updates! In the interim, call us about the D425J, which is a powerful and versatile portable air compressor. See specifications below.


Rotair’s D425J is a powerful, yet versatile, portable compressor that packs a lot of punch for its size and weight. Built on a platform that includes a JCB 444 TCAE Turbocharged and Intercooled Diesel Engine coupled to a rugged Rotair Direct Drive Air End, the D425K can handle a variety of jobs and is a favorite of painting contractors, abrasive-blasters and other high-demand users. The D425J’s design engineers were sticklers for detail. Some of its features include “Intelligent System” which prevents loaded shutdown and virtually eliminates troublesome “blowback” and a “Minimum Pressure Valve” that prevents abrasive solids from being “back-fed” into the compressor following sandblasting.

The D425J is also available in skid mount, and can be finished with a special electrostatic paint process to provide more corrosion resistance for offshore applications such as marine agriculture and energy production. The D425K is one of the quietest compressors in its class because Rotair designers engineer in the sound attenuation, as opposed to simply gluing it on. It is covered by Rotair’s industry-leading Five-Year, Unlimited Hour, Air-End Warranty that requires no special lubricants or specific enrollment.


  • Fuel tank capacity 39.63 gal
  • Minimum sound pressure level 63 dBA
  • Electrical system 12 V
  • Undercarriage axle type torsion
  • Tire size 277/75 – 15.3
  • Length without drawbar 111.14 in
  • Length with drawbar 178.50 in
  • Width 77.95 in
  • Height 84.13 in
  • Dry weight 4224 lbs
  • Hitch type ball pintle eye


  • Free air delivery 425 ft3/min
  • Working pressure 100 psi
  • Air outlets 3 x 3/4 + 1 x 2 in
  • Air end type direct drive screw with gear box
  • Air intake filtering dry-type element
  • Compressor oil capacity 5.28 gal
  • Engine and compressor oil filter spin-on


  • Diesel engine JCB 444 TCAE
  • EPA Tier 3
  • 4 cylinders
  • Displacement 4400 cc
  • Cooling liquid
  • Injection system common rail – high pressure
  • Aspiration turbocharged intercooler
  • Maximum speed 2200 rpm
  • Maximum speed (idle) 1600 rpm
  • Engine oil capacity 3.7 gal
  • Air intake system two-stage dry
  • Horsepower 132 hp
  • Average fuel consumption @ 60% 4.23 gal/h


Call 888-901-7430 or Email