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120M Motor Grader

The 120M delivers multiple technological breakthroughs to give you the best return on your investment.

overview specifications optional

Units:US | Metric

Engine
Engine Model Cat® C6.6 ACERT? VHP
Base Power (all gears) Net

138 hp

/

103 kW

Displacement

403 in3

/

6.6 L

Bore

4.13 in

/

105 mm

Stroke

4.92 in

/

125 mm

Speed @ rated power 2000 RPM
Base Power (1st gear) ? Net

138 hp

/

103 kW

VHP range ? Net 103-114 kW (138-153 hp)
Torque rise (VHP Plus) 40%
VHP Plus range ? Net 103-136 kW (138-182 hp)
Max torque

690 lb ft

/

859 N·m

Number of cylinders 6
Derating altitude

11500 ft

/

3505 m

Std - Fan speed - max 1150 RPM
Std - Fan speed - min 550 RPM
Std - Ambient Capability

109 ° F

/

43 ° C

Hi Ambient ? Fan Speed ? Max 1650 RPM
Hi Ambient ? Fan Speed ? Min 550 RPM
Hi Ambient Capability

122 ° F

/

50 ° C

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

/

23000 cm2

Brakes ? Parking Multiple oil disc
Brakes ? Secondary Dual circuit control system
All-Wheel Drive
Motor Type

/

Pump Type

/

Operational Gears - forward

/

Operational Gears - reverse

/

Hydraulic System
Circuit type Electro-hydraulic load sensing, closed center
Pump type Variable piston
Pump output

40 gal/min

/

151 L/min

Maximum system pressure

3500 psi

/

24100 kPa

Standby Pressure

450 psi

/

3100 kPa

Operating Specifications
Top Speed ? Fwd.

27.7 mph

/

44.5 km/h

Top Speed ? Rev.

23.5 mph

/

37.8 km/h

Turning radius, outside front tires

24.5 ft

/

7.5 m

Steering range ? left/right 47.5°
Articulation angle ? left/right 20°
Fwd. 1st

2.4 mph

/

3.9 km/h

Fwd. 2nd

3.3 mph

/

5.3 km/h

Fwd. 3rd

4.75 mph

/

7.6 km/h

Fwd. 4th

6.5 mph

/

10.5 km/h

Fwd. 5th

10.2 mph

/

16.4 km/h

Fwd. 6th

13.8 mph

/

22.2 km/h

Fwd. 7th

19 mph

/

30.6 km/h

Fwd. 8th

27.7 mph

/

44.5 km/h

Rev. 1st

2 mph

/

3.3 km/h

Rev. 2nd

3.8 mph

/

6.2 km/h

Rev. 3rd

5.6 mph

/

8.9 km/h

Rev. 4th

8.6 mph

/

13.9 km/h

Rev. 5th

16.1 mph

/

26 km/h

Rev. 6th

23.5 mph

/

37.8 km/h

Service Refill
Fuel Capacity

90 gal

/

341 L

Cooling system

8.7 gal

/

33 L

Hydraulic system ? Tank

16.9 gal

/

64 L

Engine Oil

3.7 gal

/

14 L

Trans./Diff./Final Drives

16.5 gal

/

62.5 L

Tandem housing (each)

15.6 gal

/

59 L

Front wheel spindle bearing housing

0.1 gal

/

0.5 L

Circle drive housing

1.8 gal

/

7 L

Frame
Drawbar - yoke bar thickness

0.75 in

/

19.1 mm

Drawbar ? Thickness

0.4 in

/

9.5 mm

Drawbar ? Width

3 in

/

76.2 mm

Circle ? Diameter

60.2 in

/

1530 mm

Circle ? Blade beam thickness

1.4 in

/

35 mm

Drawbar ? Height

6 in

/

152 mm

Front frame structure ? Width

10 in

/

254 mm

Front frame structure ? Height

10 in

/

254 mm

Front frame structure ? Thickness

0.6 in

/

16 mm

Front axle ? Height to center

22.5 in

/

572 mm

Front axle ? Wheel lean, left/right 18°
Front axle ? Total oscillation per side 32°
Tandems
Height

19.76 in

/

502 mm

Width

6.76 in

/

171.7 mm

Sidewall thickness ? Inner

0.5 in

/

14 mm

Sidewall thickness ? Outer

0.6 in

/

16 mm

Drive chain pitch

1.8 in

/

44.5 mm

Wheel axle spacing

59.5 in

/

1510 mm

Tandem oscillation ? Front up 15°
Tandem oscillation ? Front down 25°
Moldboard
Moldboard ? Height

24 in

/

610 mm

Moldboard ? Thickness

0.87 in

/

22 mm

Arc radius

16.3 in

/

413 mm

Throat clearance

4.9 in

/

123.9 mm

Cutting edge ? Width

6 in

/

152.4 mm

Cutting edge ? Thickness

0.6 in

/

16 mm

End Bit ? Width

6 in

/

152.4 mm

End Bit ? Thickness

0.6 in

/

16 mm

Blade Pull ? Base GVW

20350 lb

/

9230 kg

Blade Pull ? Max GVW

24218 lb

/

10985 kg

Down Pressure ? Base GVW

16435 lb

/

7455 kg

Down Pressure ? Max GVW

29125 lb

/

13211 kg

Blade width

12 ft

/

3.668 m

Blade Range
Circle centershift ? Right

25.8 in

/

656 mm

Circle centershift ? Left

25.8 in

/

656 mm

Moldboard sideshift ? Right

26 in

/

660 mm

Moldboard sideshift ? Left

20.1 in

/

510 mm

Maximum blade position angle 90°
Blade tip range ? Forward 40°
Blade tip range ? Backward
Maximum shoulder reach outside of tires ? Right

75 in

/

1905 mm

Maximum shoulder reach outside of tires ? Left

68.6 in

/

1742 mm

Maximum lift above ground

16.8 in

/

427 mm

Maximum depth of cut

28.3 in

/

720 mm

Ripper
Ripping depth, maximum

17 in

/

428 mm

Ripper shank holder spacing

21 in

/

533 mm

Ripper shank holders 5
Penetration force

17705 lb

/

8031 kg

Pryout force

26303 lb

/

11931 kg

Machine length increase, beam raised

39.2 in

/

995 mm

Scarifier
Mid, V-Type ? Scarifying depth, maximum

11.5 in

/

292 mm

Rear ? Scarifying depth, maximum

10.5 in

/

266 mm

Mid, V-Type ? Scarifier shank holder spacing

4.6 in

/

116 mm

Mid, straight ? Working width

71 in

/

1800 mm

Mid, straight ? Scarifier shank holder spacing

4.4 in

/

111 mm

Mid, straight ? Scarifying depth, maximum

12.5 in

/

317 mm

Mid, straight ? Scarifier shank holders 17
Mid, V-Type ? Scarifier shank holders 11
Front, V-Type, 5 or 11 tooth ? Scarifier shank holders 5 / 11
Front, V-Type, 5 or 11 tooth ? Working width

47.4 in

/

1205 mm

Front, V-Type, 5 or 11 tooth ? Scarifying depth, maximum

18.4 in

/

467 mm

Front, V-Type, 5 or 11 tooth ? Scarifier shank holder spacing

4.6 in

/

116 mm

Mid, V-Type ? Working width

46.6 in

/

1184 mm

Rear ? Working width

91 in

/

2300 mm

Rear ? Scarifier shank holders 9
Rear ? Scarifier shank holder spacing

10.5 in

/

267 mm

Weights
Gross Vehicle Weight, max ? Total

44690 lb

/

20271 kg

Gross Vehicle Weight, max ? Front axle

16446 lb

/

7460 kg

Gross Vehicle Weight, max ? Rear axle

28244 lb

/

12811 kg

Gross Vehicle Weight, base ? Front axle

9280 lb

/

4209 kg

Gross Vehicle Weight, base ? Rear axle

22611 lb

/

10256 kg

Gross Vehicle Weight, base ? Total

31891 lb

/

14466 kg

Dimensions
Height - top of cab

129 in

/

3278 mm

Length - counterweight to ripper

389.3 in

/

9889 mm

Width - outside front tires

97.7 in

/

2481 mm

Length - front axle to mid tandem

232.8 in

/

5915 mm

Length - front tire to rear of machine

334.1 in

/

8488 mm

Length - front axle to moldboard

98.85 in

/

2511 mm

Length - between tandem axles

59.5 in

/

1511 mm

Width - outside rear tires

97.7 in

/

2481 mm

Width - tire center lines

84.1 in

/

2136 mm

Height - front axle center

22.5 in

/

572 mm

Height to exhaust stack

112.4 in

/

2855 mm

Height to top of cylinders

113.7 in

/

2890 mm

Ground clearance at rear axle

13.6 in

/

347 mm

Standards
Brakes ISO 3450:1996
Sound ISO 6394:1998 / ISO 6395:1988
ROPS/FOPS ISO 3471:1992 / ISO 3449:1992
Steering ISO 5010:1992