Hewitt / Heavy Equipment / Caterpillar Products / Motor Graders / 120M/120M AWD Motor Grader

Heavy Equipment

Motor Graders

120M/120M AWD Motor Grader

Engine
Base Power (all gears) Net	103 kW / 138 hp
Engine Model	Cat® C6.6 ACERT™ VHP
Displacement	6.6 L / 403 in³
Bore	105 mm / 4.13 in
Stroke	125 mm / 4.92 in
Speed @ rated power	2000 RPM
Number of cylinders	6
Derating altitude	3505 m / 11500 ft
Std - Fan speed - max	1150 RPM
Std - Fan speed - min	550 RPM
Std - Ambient Capability	43 ° C / 109 ° F
Hi Ambient - Fan speed - max	1650 RPM
Hi Ambient - Fan speed - min	550 RPM
Hi Ambient Capability	50 ° C / 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	23000 cm² / 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	13998 N·m / 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	151 L/min / 40 gal/min
Maximum system pressure	24100 kPa / 3500 psi
Standby Pressure	3100 kPa / 450 psi

Operating Specifications
Top Speed - Fwd.	44.5 km/h / 27.7 mph
Top Speed - Rev.	37.8 km/h / 23.5 mph
Turning radius, outside front tires	7.5 m / 24.5 ft
Steering range - left/right	47.5°
Articulation angle - left/right	20°
Fwd. 1st	3.9 km/h / 2.4 mph
Fwd. 2nd	5.3 km/h / 3.3 mph
Fwd. 3rd	7.6 km/h / 4.75 mph
Fwd. 4th	10.5 km/h / 6.5 mph
Fwd. 5th	16.4 km/h / 10.2 mph
Fwd. 6th	22.2 km/h / 13.8 mph
Fwd. 7th	30.6 km/h / 19 mph
Fwd. 8th	44.5 km/h / 27.7 mph
Rev. 1st	3.3 km/h / 2 mph
Rev. 2nd	6.2 km/h / 3.8 mph
Rev. 3rd	8.9 km/h / 5.6 mph
Rev. 4th	13.9 km/h / 8.6 mph
Rev. 5th	26 km/h / 16.1 mph
Rev. 6th	37.8 km/h / 23.5 mph

Service Refill
Fuel Capacity	341 L / 90 gal
Cooling system	33 L / 8.7 gal
Hydraulic system - tank	64 L / 16.9 gal
Engine Oil	14 L / 3.7 gal
Trans./Diff./Final Drives	62.5 L / 16.5 gal
Tandem housing (each)	59 L / 15.6 gal
Front wheel spindle bearing housing	.5 L / .1 gal
Circle drive housing	7 L / 1.8 gal

Frame
Drawbar - thickness	9.5 mm / .4 in
Drawbar - yoke bar thickness	19.1 mm / .75 in
Drawbar - width	76.2 mm / 3 in
Circle - diameter	1530 mm / 60.2 in
Circle - blade beam thickness	35 mm / 1.4 in
Drawbar - height	152 mm / 6 in
Front axle - height to center	572 mm / 22.5 in
Front axle - wheel lean, left/right	18°
Front axle - total oscillation per side	32°

Tandems
Height	502 mm / 19.76 in
Width	171.7 mm / 6.76 in
Sidewall thickness - inner	14 mm / .5 in
Sidewall thickness - outer	16 mm / .6 in
Drive chain pitch	44.5 mm / 1.8 in
Wheel axle spacing	1510 mm / 59.5 in
Tandem oscillation - front up	15°
Tandem oscillation - front down	25°

Moldboard
Blade width	3.668 m / 12 ft
Moldboard - height	610 mm / 24 in
Moldboard - thickness	22 mm / .87 in
Arc radius	413 mm / 16.3 in
Throat clearance	123.9 mm / 4.9 in
Cutting edge - width	152.4 mm / 6 in
Cutting edge - thickness	16 mm / .6 in
End Bit - width	152.4 mm / 6 in
End Bit - thickness	16 mm / .6 in
Blade Pull - base GVW	9230 kg / 20350 lb
Blade Pull - max GVW	10985 kg / 24218 lb
Blade Pull - base GVW (AWD)	13881 kg / 30603 lb
Blade Pull - max GVW (AWD)	15887 kg / 35024 lb
Down Pressure - base GVW	7455 kg / 16435 lb
Down Pressure - max GVW	13211 kg / 29125 lb

Blade Range
Circle centershift - right	656 mm / 25.8 in
Circle centershift - left	656 mm / 25.8 in
Moldboard sideshift - right	660 mm / 26 in
Moldboard sideshift - left	510 mm / 20.1 in
Maximum blade position angle	90°
Blade tip range - forward	40°
Blade tip range - backward	5°
Maximum shoulder reach outside of tires - right	1905 mm / 75 in
Maximum shoulder reach outside of tires - left	1742 mm / 68.6 in
Maximum lift above ground	427 mm / 16.8 in
Maximum depth of cut	720 mm / 28.3 in

Ripper
Ripping depth, maximum	428 mm / 17 in
Ripper shank holder spacing	533 mm / 21 in
Ripper shank holders	5
Penetration force	8031 kg / 17705 lb
Pryout force	11931 kg / 26303 lb
Machine length increase, beam raised	995 mm / 39.2 in

Scarifier
Rear: Working width	2300 mm / 91 in
Rear: Scarifier shank holders	9
Rear: Scarifier shank holder spacing	267 mm / 10.5 in

Weights
Gross Vehicle Weight - base	14466 kg / 31891 lb
Gross Vehicle Weight, max	20271 kg / 44690 lb
Gross Vehicle Wt, max - front axle	7460 kg / 16446 lb
Gross Vehicle Wt, max - rear axle	12811 kg / 28244 lb
Gross Vehicle Wt, base - front axle	4209 kg / 9280 lb
Gross Vehicle Wt, base - rear axle	10256 kg / 22611 lb

Dimensions
Height - top of cab	3278 mm / 129 in
Length - counterweight to ripper	9889 mm / 389.3 in
Width - outside front tires	2481 mm / 97.7 in
Length - front axle to mid tandem	5915 mm / 232.8 in
Length - front tire to rear of machine	8488 mm / 334.1 in
Length - front axle to moldboard	2511 mm / 98.85 in
Length - between tandem axles	1511 mm / 59.5 in
Width - outside rear tires	2481 mm / 97.7 in
Width - tire center lines	2136 mm / 84.1 in
Height - front axle center	572 mm / 22.5 in
Height to exhaust stack	2855 mm / 112.4 in
Height to top of cylinders	2890 mm / 113.7 in
Ground clearance at rear axle	347 mm / 13.6 in