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Caterpillar 120M Motor Grader
Caterpillar 120M Motor GraderThe 120M delivers multiple technological breakthroughs to give you the best return on your investment. |  |  |
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| Base Power (all gears) Net | 138 hp / 103 kW |
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| Engine Model | Cat® C6.6 ACERT™ VHP |
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| Displacement | 403 in3 / 6.6 L |
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| Bore | 4.13 in / 105 mm |
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| Stroke | 4.92 in / 125 mm |
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| Speed @ rated power | 2000 RPM |
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| Number of cylinders | 6 |
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| Derating altitude | 11500 ft / 3505 m |
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| Std - Fan speed - max | 1150 RPM |
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| Std - Fan speed - min | 550 RPM |
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| Std - Ambient Capability | 109 ° F / 43 ° C |
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| Hi Ambient - Fan speed - max | 1650 RPM |
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| Hi Ambient - Fan speed - min | 550 RPM |
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| Hi Ambient Capability | 122 ° F / 50 ° C |
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| Gross Vehicle Weight - base | 31069 lb / 14093 kg |
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| Gross Vehicle Weight, max | 44690 lb / 20271 kg |
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| Gross Vehicle Wt, max - front axle | 16312 lb / 7399 kg |
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| Gross Vehicle Wt, max - rear axle | 28378 lb / 12872 kg |
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| Gross Vehicle Wt, base - front axle | 8233 lb / 3735 kg |
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| Gross Vehicle Wt, base - rear axle | 22836 lb / 10358 kg |
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| Blade width | 12 ft / 3.668 m |
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| Moldboard - height | 24 in / 610 mm |
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| Moldboard - thickness | .87 in / 22 mm |
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| Arc radius | 16.3 in / 413 mm |
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| Throat clearance | 4.9 in / 123.9 mm |
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| Cutting edge - width | 6 in / 152.4 mm |
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| Cutting edge - thickness | .6 in / 16 mm |
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| End Bit - width | 6 in / 152.4 mm |
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| End Bit - thickness | .6 in / 16 mm |
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| Blade Pull - base GVW | 20553 lb / 9323 kg |
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| Blade Pull - max GVW | 25540 lb / 11585 kg |
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| Blade Pull - base GVW (AWD) | 29312 lb / 13296 kg |
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| Blade Pull - max GVW (AWD) | 40221 lb / 18244 kg |
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| Down Pressure - base GVW | 14581 lb / 6614 kg |
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| Down Pressure - max GVW | 28887 lb / 13103 kg |
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| Drawbar - thickness | .4 in / 9.5 mm |
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| Drawbar - yoke bar thickness | .75 in / 19.1 mm |
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| Drawbar - width | 3 in / 76.2 mm |
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| Circle - diameter | 60.2 in / 1530 mm |
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| Circle - blade beam thickness | 1.4 in / 35 mm |
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| Drawbar - height | 6 in / 152 mm |
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| Front axle - height to center | 22.5 in / 572 mm |
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| Front axle - wheel lean, left/right | 18° |
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| Front axle - total oscillation per side | 32° |
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| Top Speed - Fwd. | 27.7 mph / 44.5 km/h |
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| Top Speed - Rev. | 23.5 mph / 37.8 km/h |
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| Turning radius, outside front tires | 24.5 ft / 7.5 m |
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| Steering range - left/right | 47.5° |
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| Articulation angle - left/right | 20° |
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| Fwd. 1st | 2.4 mph / 3.9 km/h |
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| Fwd. 2nd | 3.3 mph / 5.3 km/h |
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| Fwd. 3rd | 4.75 mph / 7.6 km/h |
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| Fwd. 4th | 6.5 mph / 10.5 km/h |
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| Fwd. 5th | 10.2 mph / 16.4 km/h |
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| Fwd. 6th | 13.8 mph / 22.2 km/h |
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| Fwd. 7th | 19 mph / 30.6 km/h |
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| Fwd. 8th | 27.7 mph / 44.5 km/h |
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| Rev. 1st | 2 mph / 3.3 km/h |
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| Rev. 2nd | 3.8 mph / 6.2 km/h |
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| Rev. 3rd | 5.6 mph / 8.9 km/h |
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| Rev. 4th | 8.6 mph / 13.9 km/h |
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| Rev. 5th | 16.1 mph / 26 km/h |
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| Rev. 6th | 23.5 mph / 37.8 km/h |
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| Fuel Capacity | 100 gal / 378 L |
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| Cooling system | 8.7 gal / 33 L |
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| Hydraulic system - tank | 16.9 gal / 64 L |
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| Engine Oil | 3.7 gal / 14 L |
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| Trans./Diff./Final Drives | 16.5 gal / 62.5 L |
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| Tandem housing (each) | 15.6 gal / 59 L |
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| Front wheel spindle bearing housing | .1 gal / .5 L |
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| Circle drive housing | 1.8 gal / 7 L |
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| Forward/Reverse Gears | 8 Fwd / 6 Rev |
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| Transmission | Direct drive, power shift, countershaft |
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| Brakes - Service | Multiple oil-disc |
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| Brakes - Service, surface area | 3565 in2 / 23000 cm2 |
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| Brakes - Parking | Multiple oil disc |
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| Brakes - Secondary | Dual circuit control system |
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| Circuit type | Electro-hydraulic load sensing, closed center |
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| Pump type | Variable piston |
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| Pump output | 40 gal/min / 151 L/min |
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| Maximum system pressure | 3500 psi / 24100 kPa |
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| Standby Pressure | 450 psi / 3100 kPa |
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| Motor Type | 2 Infinitely variable axial piston |
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| Pump Type | 2 Variable piston |
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| Torque - max | 10325 ft-lb / 13998 N·m |
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| Operational Gears - forward | 1 - 7 |
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| Operational Gears - reverse | 1 - 5 |
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| Circle centershift - right | 25.8 in / 656 mm |
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| Circle centershift - left | 25.8 in / 656 mm |
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| Moldboard sideshift - right | 26 in / 660 mm |
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| Moldboard sideshift - left | 20.1 in / 510 mm |
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| Maximum blade position angle | 90° |
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| Blade tip range - forward | 40° |
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| Blade tip range - backward | 5° |
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| Maximum shoulder reach outside of tires - right | 75 in / 1905 mm |
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| Maximum shoulder reach outside of tires - left | 68.6 in / 1742 mm |
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| Maximum lift above ground | 16.8 in / 427 mm |
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| Maximum depth of cut | 28.3 in / 720 mm |
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| Ripping depth, maximum | 16.8 in / 428 mm |
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| Ripper shank holders | 5 |
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| Penetration force | 17740 lb / 8047 kg |
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| Pryout force | 20461 lb / 9281 kg |
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| Machine length increase, beam raised | 36.2 in / 919 mm |
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| Rear: Working width | 91 in / 2300 mm |
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| Rear: Scarifier shank holders | 9 |
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| Rear: Scarifier shank holder spacing | 10.5 in / 267 mm |
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| Height | 19.76 in / 502 mm |
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| Width | 6.76 in / 171.7 mm |
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| Sidewall thickness - inner | .5 in / 14 mm |
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| Sidewall thickness - outer | .6 in / 16 mm |
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| Drive chain pitch | 1.8 in / 44.5 mm |
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| Wheel axle spacing | 59.5 in / 1510 mm |
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| Tandem oscillation - front up | 15° |
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| Tandem oscillation - front down | 25° |
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| Height - top of cab | 129 in / 3278 mm |
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| Length - counterweight to ripper | 389.3 in / 9889 mm |
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| Width - outside front tires | 97.7 in / 2481 mm |
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| Length - front axle to mid tandem | 232.8 in / 5915 mm |
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| Length - front tire to rear of machine | 334.1 in / 8488 mm |
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| Length - front axle to moldboard | 98.85 in / 2511 mm |
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| Length - between tandem axles | 59.5 in / 1511 mm |
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| Width - outside rear tires | 97.7 in / 2481 mm |
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| Width - tire center lines | 84.1 in / 2136 mm |
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| Height - front axle center | 22.5 in / 572 mm |
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| Height to exhaust stack | 112.4 in / 2855 mm |
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| Height to top of cylinders | 113.7 in / 2890 mm |
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| Ground clearance at rear axle | 13.6 in / 347 mm |
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