Do You Know Your Miller Work Truck Terminology?

Do You Know Your Miller Work Truck Terminology?

Print Article
Which EnPak® power system is the right solution for your customers? Take a look at the technologies and capabilities available — and brush up on your industry and product terms while you're at it.
Work truck with enpak on back on blue background

EnPak technologies and capabilities 

Auto-Speed™ technology – Automatically adjusts engine speed to match compressed air, battery charge and weld demands — reducing fuel consumption, maintenance costs and noise for a safer, more efficient jobsite.

Auto Start/Stop – Automatically turns the EnPak engine on and off based on demand, reducing fuel consumption and noise — which enhances safety and improves the work environment.

Battery charge – Up to 100 amps of DC power to charge 12/24V batteries.

CAN bus (SAE J1939) connectivity – Allows communication with a telematics system so customers can monitor engine data, machine loads and usage, which helps them to track service intervals, proactively schedule maintenance and improve diagnostics.

Chassis Power – Integrated into the truck battery system, Chassis Power monitors the battery and automatically charges it as needed. (Available on the EnPak A30 only.)

Crank assist – DC power to jump-start vehicles that use 12/24V systems.

Rotary screw air compressor – Uses two meshing rotors to compress air, rather than a reciprocating piston. Quickly delivers airflow, at 100% duty cycle and high reliability.

Industry terminology

cfm – Cubic feet per minute: A measure of air volume delivered by the air compressor.

Duty cycle – The percentage of available time that a machine or component can operate before cool down is required in a 10 minute period. A device with a 100% duty cycle can operate continuously with no cool-down time needed. 

GFCI – Ground fault circuit interrupter. Fast-acting circuit breaker designed to shut off receptacle power in the event of a ground fault.

gpm – Gallons per minute: A measure of fluid volume delivered by the hydraulic pump.

Open center hydraulic systems — Control valves are placed in series; one valve is operated at a time. Typical EnPak A60HGE application is a crane truck. (Our most common configuration for modern hydraulic systems.)

Closed center hydraulic system — Control valves are placed in parallel; all valves work independently. Used with multiple subsystems with closed center control valves. Typical EnPak A60HGE application is a lube truck.

Welding definitions

Arc control – Allows adjustment of weld arc from soft to stiff.

MIG (Metal Inert Gas) – Coiled wire is fed through a gun; the wire is both the electrode and the filler metal. Shielding gas is needed unless self-shielded flux-cored wire is used. Fast and versatile.

Stick – Uses flux-coated welding rods as the electrode and the filler metal; no shielding gas needed. Good for welding outdoors and with rusty/dirty material.

TIG (Tungsten Inert Gas) – Uses a nonconsumable tungsten electrode and a separate filler metal rod. Argon shielding gas is needed. Precise; can produce aesthetically pleasing welds.


Download and print the glossary so you can have it on hand whenever needed.

Updated: March 29, 2021
Published: September 12, 2019