DTM70 Direct-Transmission Mounted Air Compressor

The VMAC DTM70 air compressor is a direct-transmission mounted PTO driven air compressor that provides up to 70 CFM.

The DTM70 system is the best choice for fleet managers and owners who are concerned with saving space and reducing weight on their service trucks. This powerful rotary screw air compressor is ideal for operating small to medium sized air tools with high air demand, including 1” impact wrenches, 60 lb jackhammers, backfill tampers, vertical/horizontal grinders, and sanders.

VMAC engineers truck mounting kits for the easiest possible installation. Working closely with leading truck manufacturers, VMAC ensures that mounting kits do not affect OEM warranties.

Mounting kits available for:

Ford Logo RAM Logo

  • Ford F-250 to F-600 Power Stroke Diesel
  • RAM 3500 to 5500 Chassis Cab Cummins Turbo Diesel

Some applications are restricted to specific series and/or models. Please confirm compatible vehicles on VMAC’s Application List.


Common jobs that use the DTM70 air compressor:
  • Commercial tire services
  • Utility servicing
  • Heavy equipment repair
  • Sign installation
  • Oil and gas mobile mechanics

Commonly used air tools:

  • 1” impact wrenches
  • 60 lb jackhammers/pavement breakers
  • Backfill tampers
  • Vertical/horizontal grinders
  • Sanders
  • OTR tire inflation
  • Many other air tools/applications

DTM70 Air Compressors Benefits

Up To 70 CFM. 100% Of The Time.

DTM70 air compressors use patented rotary screw technology designed to run at 100% duty cycle without stopping, so operators don’t have to wait for their air compressor to fill an air receiver tank. This maximizes tool performance and eliminates downtime.

Decrease Truck GVW By Up To 260 lb

DTM70 air compressors reduce truck weight by as much as 260 lb because there is no secondary engine to carry around on your truck. At only 150 lb, the DTM70 also weighs a fraction compared to other underdeck air compressors. Choose a lightweight air compressor, and you’ll be able to add more tools and equipment to your truck, carry more materials, and take advantage of better fuel economy.

Easy Operation

VMAC’s DTM air compressors feature easy-to-use controls. Simply press the on/off button on the digital control box, and the system will take care of the rest; the PTO engages, the compressor turns on, and the throttle control automatically idles the truck engine up and down to match air demand. For cold climate operation, a heater is built into the compressor, which automatically warms up on the way to the job, so it is ready to work when you are.

Easy Installation

DTM70 air compressors are easy to install, with installation times up to 50% faster than other underdeck air compressor systems. The DTM70 doesn’t require modifications to the RAM or Ford transfer case, nor drive shafts that can cause alignment issues. Traditional underdeck air compressors for RAM and Ford Super Duty trucks are extremely heavy, have poor ground clearance, and require additional components sourcing. VMAC mounting kits are application engineered for RAM and Ford diesel trucks and include all the necessary components.

Free Up To 25 Cubic Feet

VMAC DTM70 air compressors free up to 25 cubic feet on the truck deck because the air compressor mounts to the transmission, and the rest of the system mounts under the truck. In fact, no components get installed on the Ford truck deck, ensuring a clean and professional-looking truck and space for other equipment, tools, or materials.

Avoid Frustrating Breakdowns And Maintenance Issues

DTM70 air compressors are powered by a PTO mounted on the truck’s transmission. Because DTMs don’t have their own engine to maintain, less time and money are spent fixing engine issues, and more time is spent making money on jobs.

Work In Any Climate

DTM70 air compressors are proven to work in any extreme climate. With an integrated automatic heater, the compressor is ready to work when and where you are.

DTM70 Air Compressors Components

DTM70 Components Image 2023
Mechanical Regulator

Remotely mounted on the firewall in the engine compartment for easy access for setup/adjustment.

Air/Oil Separator Tank

Separates compressor oil from compressed air and mounts safely to the truck’s frame rail.

Digital Display Box

LCD for on/off controls; observing system status, service reminders, displays error messages, and stores error codes

Remote Heavy Duty Air Filter

Remotely installed on the truck for easy accessibility. Ram trucks only.

Air Compressor

VMAC 100% duty cycle rotary screw compressor, driven off an included PTO, directly mounted to the truck’s transmission. Backed by a Lifetime Warranty (Limited).


Automated heater integrated into the compressor housing for cold climate operation heats the compressor on the way to the job site.


Liquid to liquid cooler integrates into the truck’s cooling system and mounts under the radiator.

Chelsea® Series PTO

Unique patented design provides best-in-class noise reduction and unprecedented torque capacity of up to 300 lb-ft, depending on PTO.

DTM70 Air Compressors Specifications

Air Compressor Output
  • Up to 70 CFM* @ 100 psi (175 psi max)
Air Compressor Type
  • PTO driven, direct transmission mounted, 100% duty cycle, VMAC oil-injected rotary screw
PTO (included)
  • Chelsea® PTO; electrically actuated, PTO indicator lamp

    • Chelsea® 272 Series (RAM)
    • Chelsea® 210 Series (2020+ Ford)
Weight (wet)
  • Approximately 150 lb (68 kg)
Display Box
  • On/off function of PTO and compressor
  • LCD display
  • Service notifications
  • Displays error messages and stores error codes
  • System temperature
Throttle Control
  • Variable speed; digital throttle control connects to OBD2 CAN bus connector; adjusts truck engine speed automatically to match air demand

Safety System
  • Automatic compressor heater function
  • Compressor over-temp sensor
  • Automatic rapid blow-down valve on tank
  • 200 psi pressure relief valve
  • Truck drive disable circuit on throttle control
  • Truck park brake safety shut-off switch on control box
  • VMAC Lifetime Warranty (Limited) on VMAC air compressors; two years on all other major components; for details, visit www.vmacair.com/warranty.

*Actual maximum CFM output of the air compressor varies by vehicle application and engine RPM. See application list for details.

DTM70 Air Compressor Downloads


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