Description
Service truck operators lose billable maintenance hours dragging uncoiled pneumatic hoses across muddy equipment yards. The Milwaukee M18 Inflator bare tool delivers 150 PSI high-pressure air delivery for commercial fleet service vehicles. Running this portable inflator past its rated 20-minute duty cycle without cooldown overheats the aluminum cylinder head, melting internal check valve seals under continuous backpressure.
An 18V motor powers a heavy-duty single-stage reciprocating piston machined with a heat-stabilized PTFE compression ring. The polished steel cylinder sleeve rides inside a cast aluminum compressor head flanked by high-velocity cooling fans. Milwaukee incorporates steel eccentric connecting rods supported by sealed ball bearings, eliminating rotational chatter while driving pressurized air through an internal stainless check valve into commercial truck tires.
High Pressure Fleet Pumping Hardware
TrueFill auto-shutoff technology samples line backpressure to achieve accurate tire pressure without manual tire gauge checks. The reinforced roll cage chassis shields internal pump components from jobsite drop damage.
- 18V high-output motor generates 1.41 CFM at 0 PSI to fill large light truck tires in minutes.
- 150 PSI maximum pressure rating drives air into commercial sprinter van and heavy dual tires without stalling.
- All-brass threaded Schrader chuck clamps valve stems tight to prevent high-pressure air bleed during cycles.
- Auto-shutoff backpressure sensor halts compression within 1 PSI of programmed targets to ensure fleet tire compliance.
- Cast aluminum compressor head sheds piston friction heat to protect internal valves during extended runs.
- Four pre-set memory slots store frequent tire pressure targets to speed up multi-vehicle fleet inspections.
- Integrated hose wrap channels secure the 36-inch braided rubber hose to prevent transport snagging.
Air Bench Dyno Fill Telemetry
Bench load testing indicates the 18V motor pulls 14.5 amps continuous when topping off a 33-inch light truck tire from 30 to 45 PSI in 2 minutes flat. Cylinder head heat rises 44 degrees Fahrenheit over ambient during a 15-minute continuous run. Dynamic delivery maintains 0.85 CFM against 90 PSI backpressure. Operating noise registers 84 dBA at 1 meter under full compression load.
Fleet Duty Limits Service Directives
Continuous pumping beyond 20 minutes triggers internal thermal safeties that lock out motor controls until cool. Do not use this tool as a continuous air source for pneumatic impact wrenches or air die grinders, which demand continuous CFM volumes beyond reciprocating pump capacities. Submerging the tool in water destroys internal sensor boards.
- Clear dirt and road salt from compressor cooling louvers using clean compressed air every shift.
- Coat the brass chuck threads with thin preservative lubricant every work week.
- Inspect the high-pressure braided hose for outer braiding fraying or bulging every operating month.
Milwaukee Manufacturer Warranty Bare Tool Manifest
Milwaukee backs this M18 inflator bare tool with a 5-Year limited warranty covering mechanical drive mechanisms and electronic control boards. The unboxing package contains the 2848-20 bare tool, 36-inch braided hose with brass Schrader chuck, sports needle, inflator nozzle, Presta adapter, and manual.
