| The 120M delivers multiple technological breakthroughs to give you the best return on your investment. |
| Engine | |
| Base Power (all gears) Net | 138 hp |
| Engine Model | Cat® C6.6 ACERT |
| Displacement | 403 in3 |
| Bore | 4.13 in |
| Stroke | 4.92 in |
| Speed @ rated power | 2000 RPM |
| Number of cylinders | 6 |
| Derating altitude | 11500 ft |
| Std - Fan speed - max | 1150 RPM |
| Std - Fan speed - min | 550 RPM |
| Std - Ambient Capability | 109 ° F |
| Hi Ambient - Fan speed - max | 1650 RPM |
| Hi Ambient - Fan speed - min | 550 RPM |
| Hi Ambient Capability | 122 ° F |
| Power Train | |
| Forward/Reverse Gears | 8 Fwd / 6 Rev |
| Transmission | Direct drive, power shift, countershaft |
| Brakes - Service | Multiple oil-disc |
| Brakes - Service, surface area | 3565 in2 |
| Brakes - Parking | Multiple oil disc |
| Brakes - Secondary | Dual circuit control system |
| All-Wheel Drive System (Optional) | |
| Motor Type | 2 Infinitely variable axial piston |
| Pump Type | 2 Variable piston |
| Torque - max | 10325 ft-lb |
| Operational Gears - forward | 1 - 7 |
| Operational Gears - reverse | 1 - 5 |
| Hydraulic System | |
| Circuit type | Electro-hydraulic load sensing, closed center |
| Pump type | Variable piston |
| Pump output | 40 gal/min |
| Maximum system pressure | 3500 psi |
| Standby Pressure | 450 psi |
| Operating Specifications | |
| Top Speed - Fwd. | 27.7 mph |
| Top Speed - Rev. | 23.5 mph |
| Turning radius, outside front tires | 24.5 ft |
| Steering range - left/right | 47.5° |
| Articulation angle - left/right | 20° |
| Fwd. 1st | 2.4 mph |
| Fwd. 2nd | 3.3 mph |
| Fwd. 3rd | 4.75 mph |
| Fwd. 4th | 6.5 mph |
| Fwd. 5th | 10.2 mph |
| Fwd. 6th | 13.8 mph |
| Fwd. 7th | 19 mph |
| Fwd. 8th | 27.7 mph |
| Rev. 1st | 2 mph |
| Rev. 2nd | 3.8 mph |
| Rev. 3rd | 5.6 mph |
| Rev. 4th | 8.6 mph |
| Rev. 5th | 16.1 mph |
| Rev. 6th | 23.5 mph |
| Service Refill | |
| Fuel Capacity | 90 gal |
| Cooling system | 8.7 gal |
| Hydraulic system - tank | 16.9 gal |
| Engine Oil | 3.7 gal |
| Trans./Diff./Final Drives | 16.5 gal |
| Tandem housing (each) | 15.6 gal |
| Front wheel spindle bearing housing | 0.1 gal |
| Circle drive housing | 1.8 gal |
| Frame | |
| Drawbar - thickness | 0.4 in |
| Drawbar - yoke bar thickness | 0.75 in |
| Drawbar - width | 3 in |
| Circle - diameter | 60.2 in |
| Circle - blade beam thickness | 1.4 in |
| Drawbar - height | 6 in |
| Front axle - height to center | 22.5 in |
| Front axle - wheel lean, left/right | 18° |
| Front axle - total oscillation per side | 32° |
| Tandems | |
| Height | 19.76 in |
| Width | 6.76 in |
| Sidewall thickness - inner | 0.5 in |
| Sidewall thickness - outer | 0.6 in |
| Drive chain pitch | 1.8 in |
| Wheel axle spacing | 59.5 in |
| Tandem oscillation - front up | 15° |
| Tandem oscillation - front down | 25° |
| Moldboard | |
| Blade width | 12 ft |
| Moldboard - height | 24 in |
| Moldboard - thickness | 0.87 in |
| Arc radius | 16.3 in |
| Throat clearance | 4.9 in |
| Cutting edge - width | 6 in |
| Cutting edge - thickness | 0.6 in |
| End Bit - width | 6 in |
| End Bit - thickness | 0.6 in |
| Blade Pull - base GVW | 20350 lb |
| Blade Pull - max GVW | 24218 lb |
| Blade Pull - base GVW (AWD) | 30603 lb |
| Blade Pull - max GVW (AWD) | 35024 lb |
| Down Pressure - base GVW | 16435 lb |
| Down Pressure - max GVW | 29125 lb |
| Blade Range | |
| Circle centershift - right | 25.8 in |
| Circle centershift - left | 25.8 in |
| Moldboard sideshift - right | 26 in |
| Moldboard sideshift - left | 20.1 in |
| Maximum blade position angle | 90° |
| Blade tip range - forward | 40° |
| Blade tip range - backward | 5° |
| Maximum shoulder reach outside of tires - rig | 75 in |
| Maximum shoulder reach outside of tires - lef | 68.6 in |
| Maximum lift above ground | 16.8 in |
| Maximum depth of cut | 28.3 in |
| Ripper | |
| Ripping depth, maximum | 17 in |
| Ripper shank holder spacing | 21 in |
| Ripper shank holders | 5 |
| Penetration force | 17705 lb |
| Pryout force | 26303 lb |
| Machine length increase, beam raised | 39.2 in |
| Scarifier | |
| Rear: Working width | 91 in |
| Rear: Scarifier shank holders | 9 |
| Rear: Scarifier shank holder spacing | 10.5 in |
| Weights | |
| Gross Vehicle Weight - base | 31891 lb |
| Gross Vehicle Weight, max | 44690 lb |
| Gross Vehicle Wt, max - front axle | 16446 lb |
| Gross Vehicle Wt, max - rear axle | 28244 lb |
| Gross Vehicle Wt, base - front axle | 9280 lb |
| Gross Vehicle Wt, base - rear axle | 22611 lb |
| Dimensions | |
| Height - top of cab | 129 in |
| Length - counterweight to ripper | 389.3 in |
| Width - outside front tires | 97.7 in |
| Length - front axle to mid tandem | 232.8 in |
| Length - front tire to rear of machine | 334.1 in |
| Length - front axle to moldboard | 98.85 in |
| Length - between tandem axles | 59.5 in |
| Width - outside rear tires | 97.7 in |
| Width - tire center lines | 84.1 in |
| Height - front axle center | 22.5 in |
| Height to exhaust stack | 112.4 in |
| Height to top of cylinders | 113.7 in |
| Ground clearance at rear axle | 13.6 in |
| OPERATOR ENVIRONMENT |
| Air Conditioner with heater |
| Arm and wrist rest, adjustable |
| Articulation, automatic Return-to-Center |
| Ashtray and lighter |
| Cat Messenger, operator information system |
| Centershift pin indicator |
| Coat hook |
| Cup holder |
| Display, digital speed and gear |
| Doors, left and right side with wiper |
| Gauge cluster - articulation, engine coolant temp, |
| engine RPM, fuel, system voltage |
| Gauge, machine level |
| Hour meter, digital |
| Joystick hydraulic controls |
| implements, steering, transmission |
| Ladders, cab, left and right side |
| Lights, night time cab |
| Mirror, inside rearview, wide angle |
| Power port, 12V |
| Radio Ready, Entertainment |
| ROPS cab, sound suppressed |
| Seat belt, retractable 76 mm (3 in) |
| Seat, cloth-covered, comfort suspension |
| Storage area for cooler/lunchbox |
| Throttle control, electronic |
| Windows, laminated glass: |
| fixed front with intermittent wiper |
| side and rear (3) |
| POWER TRAIN |
| Air cleaner, dual stage, dry type, automatic dust ejector, |
| service indicator through Cat Messenger |
| Air-to-air after cooler (ATAAC) |
| Belt, serpentine, automatic tensioner |
| Brakes, four-wheel hydraulic |
| Differential, lock / unlock |
| Drain, engine oil, ecology |
| Electronic over speed protection |
| Engine, Cat® C6.6 with ACERT |
| Fuel-water separator |
| Hydraulic demand fan |
| Muffler, under hood |
| Parking brake - multi-disc, sealed, oil-cooled |
| Priming pump, fuel |
| Rear axle, modular |
| Sediment drain, fuel tank |
| Transmission, 8F/6R, power shift, direct drive |
| VHP (Variable Horsepower) |
| VHP Plus (Variable Horsepower Plus) |
| ELECTRICAL |
| Alarm, back up |
| Alternator, 80 ampere, sealed |
| Batteries, maintenance free, heavy duty 1125 CCA |
| Breaker panel, ground accessible |
| Electrical system, 24V |
| Grade Control Ready - Cab harness, software, |
| electrical hydraulic valves, bosses and brackets |
| Lights, reversing |
| Lights, roading, roof-mounted |
| Lights, stop and tail, LED |
| Product Link Ready |
| Starter, electric |
| OTHER STANDARD EQUIPMENT |
| Brake accumulators, dual certified |
| Bumper, rear, integrated with hitch |
| CD ROM Parts Book |
| Clutch, circle drive slip |
| Cutting edges |
| curved DH-2 steel |
| 152 mm x 16 mm (6 in x 5/8 in) |
| 19 mm (3/4 in) mounting bolts |
| Doors (3), engine compartment, locking |
| Drawbar - 4 shoes with replaceable wear strips |
| Endbits |
| 16 mm (5/8 in) DH-2 steel |
| 19 mm (3/4 in) mounting bolts |
| Extended Life Coolant to -35° C (-30° F) |
| Fluid check, ground level |
| Frame, articulated, with safety lock |
| Fuel tank, ground level access |
| Ground level engine shutdown |
| Hammer (emergency exit) |
| Horn, electric |
| Hydraulics, base 8 implement controls |
| Hydraulics, load-sensing |
| Lockout, hydraulic implement for roading |
| Moldboard |
| 3658 mm x 610 mm x 22 mm (12 ft x 24 in x 7/8 in) |
| hydraulic sideshift and tip |
| Mounting, cab roof accessories |
| Pump, hydraulic, high capacity (99cc/6 in3) |
| Paint, glare reducing - top of front frame |
| and rear enclosure |
| Radiator cleanout access |
| Secondary steering |
| Serviceability, LH side |
| S |
| Tandem walkway/guards |
| Tool box |
| Tow hitch |
| TIRES, RIMS, & WHEELS |
| Partial allowance for tires and multi-piece rims |
| ELECTRICAL kg lb |
| Alternator, 150 ampere 2 5 |
| Batteries: |
| extreme duty, 1400 CCA 44 96 |
| heavy duty, 1125 CCA 44 96 |
| Converter, communication (CB) 5 11 |
| Lights: |
| 5 Lighting Arrangements, including rear roading, drop down |
| Warning, LED strobe 1 2 |
| GUARDS |
| covers, screen 4 9 |
| debris 9 20 |
| Transmission Sides/Sound 76 167 |
| transmission 133 293 |
| OPERATOR ENVIRONMENT |
| Fan, defroster, rear window 2 4 |
| Mirrors, outside: |
| heated 24V 15 33 |
| mounted 10 22 |
| Seat, air suspension, cloth 2 5 |
| Shade, sun 2 5 |
| Wiper, each side 0 1 |
| Wiper/washer, rear 0 1 |
| POWER TRAIN |
| All Wheel Drive 590 1300 |
| Engine, variable horsepower plus (VHP Plus) |
| Precleaner, Sy-Klone 9 20 |
| Transmission, autoshift 2 5 |
| OTHER ATTACHMENTS kg lb |
| AccuGrade ARO 41 90 |
| Accumulators, blade lift 77 170 |
| AutoLube, Lincoln 23 50 |
| AutoLube, Lincoln, ripper enhancement 5 10 |
| Camera, rearview 9 20 |
| Caterpillar Product Link 321SR 5 10 |
| Compressor/tank, Air 23 50 |
| Fenders, front, AWD 56 124 |
| Fenders, rear 119 262 |
| Heater, engine coolant: |
| 120V 0.5 1 |
| 240V 1 3 |
| Hydraulic arrangements with one or more additional |
| hydraulic valves are available for rear ripper, dozer, |
| snow plow and snow wing. |
| Security system 2 5 |
| Snow wing mounting, frame ready 91 200 |
| Starting aid, Ether .5 1 |
| WORK TOOLS / G.E.T. |
| Blade extension, 610 mm (2 ft) |
| Left Hand 113 250 |
| Cutting Edges, curved 43 95 |
| Drawbar, 6 shoe circle guide 22.7 50 |
| Endbits, overlay 24 52 |
| Front Lift Group, Manual 680 1500 |
| Mid Mount Scarifier 939 2071 |
| Moldboard |
| 4267 mm x 610 mm x 22 mm (14 ft x 24 in x 7/8 in) |
| 4267 mm x 686 mm x 25 mm (14 ft x 27 in x 1 in) |
| Push plate, counterweight 885 1950 |
| Ripper/Scarifier, Rear 998 2200 |
| Ripper tooth 30 67 |
| Scarifier, front 434 956 |
| Scarifier, Tooth 69 152 |
| MACHINE ARRANGEMENTS |
| Canadian Arrangement |
| European Arrangement |
| Roading Arrangement, European |
| Snow Arrangement |
| Note: Not all attachments are available in all regions. |
| ELECTRICAL kg lb |
| Alternator, 150 ampere 2 5 |
| Batteries: |
| extreme duty, 1400 CCA 44 96 |
| heavy duty, 1125 CCA 44 96 |
| Converter, communication (CB) 5 11 |
| Lights: |
| 5 Lighting Arrangements, including rear roading, drop down |
| Warning, LED strobe 1 2 |
| GUARDS |
| covers, screen 4 9 |
| debris 9 20 |
| Transmission Sides/Sound 76 167 |
| transmission 133 293 |
| OPERATOR ENVIRONMENT |
| Fan, defroster, rear window 2 4 |
| Mirrors, outside: |
| heated 24V 15 33 |
| mounted 10 22 |
| Seat, air suspension, cloth 2 5 |
| Shade, sun 2 5 |
| Wiper, each side 0 1 |
| Wiper/washer, rear 0 1 |
| POWER TRAIN |
| All Wheel Drive 590 1300 |
| Engine, variable horsepower plus (VHP Plus) |
| Precleaner, Sy-Klone 9 20 |
| Transmission, autoshift 2 5 |
| OTHER ATTACHMENTS kg lb |
| AccuGrade ARO 41 90 |
| Accumulators, blade lift 77 170 |
| AutoLube, Lincoln 23 50 |
| AutoLube, Lincoln, ripper enhancement 5 10 |
| Camera, rearview 9 20 |
| Caterpillar Product Link 321SR 5 10 |
| Compressor/tank, Air 23 50 |
| Fenders, front, AWD 56 124 |
| Fenders, rear 119 262 |
| Heater, engine coolant: |
| 120V 0.5 1 |
| 240V 1 3 |
| Hydraulic arrangements with one or more additional |
| hydraulic valves are available for rear ripper, dozer, |
| snow plow and snow wing. |
| Security system 2 5 |
| Snow wing mounting, frame ready 91 200 |
| Starting aid, Ether .5 1 |
| WORK TOOLS / G.E.T. |
| Blade extension, 610 mm (2 ft) |
| Left Hand 113 250 |
| Cutting Edges, curved 43 95 |
| Drawbar, 6 shoe circle guide 22.7 50 |
| Endbits, overlay 24 52 |
| Front Lift Group, Manual 680 1500 |
| Mid Mount Scarifier 939 2071 |
| Moldboard |
| 4267 mm x 610 mm x 22 mm (14 ft x 24 in x 7/8 in) |
| 4267 mm x 686 mm x 25 mm (14 ft x 27 in x 1 in) |
| Push plate, counterweight 885 1950 |
| Ripper/Scarifier, Rear 998 2200 |
| Ripper tooth 30 67 |
| Scarifier, front 434 956 |
| Scarifier, Tooth 69 152 |
| MACHINE ARRANGEMENTS |
| Canadian Arrangement |
| European Arrangement |
| Roading Arrangement, European |
| Snow Arrangement |
| Note: Not all attachments are available in all regions. |