Tough, Dependable UnitThe Mobilair M121 is a versatile unitsuited for a number of applicationsincluding sand-blasting, pavement break-ing, and general air tool use. Units arealso well suited for rental houses, repairtrucks, and railroads.

The M121 offers a wide array of features that make it very user-friendly.Units come standard with an easy toread control panel that is well protectedunder the canopy and visible from theoutside. The fuel tank has a large fillerneck with overflow protection for safe,easy filling. A height adjustable hitch and

rigid tow bar also make transporting theM121 easy. A torsion bar suspensionsystem and oversized tires provide supe-rior road handling, further adding to theunits superior functionality.

Unsurpassed Durability andQuietnessThe M121s heavy duty steel chassisand and fully galvanized canopy ensuresmooth operation even when subjectedto the harshest conditions. Both thecanopy and solid steel flooring protectthe motor, airend, and criticalcomponents from dirt, water, and other

contaminants. This rugged constructioncombined with extensive engineeringallow the M121 to operate in ambienttemperatures up to 120F. The canopy isalso super soundproofed and providesextremely low decibel levels. Maximumsound level measured at 23 feet is 76 db(A).

Mobilair M121Portable Compressors

Standard Features: Rotary screw airend: Sigma profile

produces more air with less fuelconsumption

Heavy duty steel chassis

Fully galvanized canopy

4 micron, 2-stage compressor inlet filterwith maintenance indicator

10 micron engine air filter with maintenance indicator

High capacity cold start battery ensuresreliable operation even under extremeworking conditions

Heavy duty diesel engine complies with2004 EPA emissions standards

Tool boxes for convenient storage

Lifting eye for simple handling

Highly efficient cooling system

Modulation control

Optional Features: Pressures to 190 psig

Aftercooler and filtration packages

Hose reels and gauge packages

Complete line of air tools

Corporate Headquarters:P.O. Box 946Fredericksburg, Virginia 22404Phone 540-898-5500Fax 540-898-5520www.kaeser.com

2005 Kaeser Compressors, Inc. All rights reserved. 06/05USM121

The Air Systems SpecialistWith over 85 years of experience, Kaeser is the air systems specialist. Our extensive100,000 square foot facility allows us to provide unequaled product availability. With servicecenters nationwide and our 24-hour emergency parts guarantee, Kaeser customers canrely on the best after-sales support in the industry. Kaeser stands committed to providingthe highest quality air system for your specific compressed air needs.

Specifications

Skid mount option

Control PanelEasy to read control panel

is well protected

Air Filter10 micron engine air filter and 4 micron, 2-stage

compressor inlet filter both with

maintenance indicator

AirendEfficient Sigma Profile rotary screw airend

produces more air with less fuel

consumption.

Oil Filter10 micron spin-on oil filter with integrated

thermostatic valve

Fuel TankLarge capacity fuel tank provides many hours of

operation

Features and Benefits

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Compressor Diesel Engine Package Dimensions

Free air delivery 400 cfm Make Deutz BF4M 2012C Fuel tank capacity 33 gal. Length 112Working pressure 100 psig Power at full load 104.5 hp Weight, dry 4135 lb. Width 74

Full load speed 2200 rpm Outlet (3) 3/4 - (1) 1-1/2 Height 63Off load running speed 1600 rpm Sound level max. 76db(A) at 23 ft.