120M2 Motor Grader

120M2 Motor Grader

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The M Series 2 continues the legacy of quality already established by Cat Motor Graders. The extensive validation program, combined with improvements to the manufacturing process, allows Caterpillar to further enhance our quality. The end result of this development process is a motor grader line with breakthrough technologies, tested in the field and built around real applications and real customer needs. M Series 2 Motor Graders meet Tier 4 Interim/Stage IIIB equivalent emission standards.

Engine

Base Power (1st gear) - Net
145.0 hp
Engine Model
Cat® C7.1 ACERT™
Bore
4.13 in
Stroke
5.31 in
Speed @ Rated Power
2,100 rpm
Base Power (1st gear) - Net (metric)
147.0 hp
Base Power (all gears) - Net
145.0 hp
Emissions
Tier 4 Interim/Stage IIIB equivalent
Hi Ambient - Fan Speed - Standard
1,000 rpm
Maximum Torque
693.0 lbf-ft
Standard Capability
109.0 ° F
Torque Rise
45%
VHP Plus Range - Net
108-141 kW (145-189 hp)
VHP Plus Range - Net (metric)
108-141 kW (147-192 hp)
VHP Plus - gear 1F, Net
145.0 hp
VHP Plus - gear 2F, Net
153.0 hp
VHP Plus - gear 3F, Net
161.0 hp
VHP Plus - gear 4F, Net
169.0 hp
VHP Plus - gear 5F, Net
174.0 hp
VHP Plus - gear 6F, Net
179.0 hp
VHP Plus - gear 7F, Net
184.0 hp
VHP Plus - gear 8F, Net
189.0 hp
Displacement
428.0 in3
Number of Cylinders
6
Derating Altitude
10000.0 ft
High Ambient - Fan Speed - Maximum
1,350 rpm
High Ambient - Fan Speed - Minimum
500 rpm
High Ambient Capability
122.0 ° F

Power Train

Forward/Reverse Gears
8 Forward/6 Reverse
Transmission
Direct Drive, Powershift
Brakes - Service
Multiple Oil Disc
Brakes - Service, Surface Area
3565.0 in2
Brakes - Parking
Multiple Oil Disc
Brakes - Secondary
Dual Circuit

Hydraulic System

Circuit Type
Parallel
Pump Type
Variable Piston
Pump Output
55.7 gal/min
Maximum System Pressure
3500.0 psi
Reservoir Tank Capacity
15.85 gal
Standby Pressure
609.0 psi

Operating Specifications

Top Speed - Forward
28.4 mph
Top Speed - Reverse
22.4 mph
Turning Radius, Outside Front Tires
24.3 ft
Steering Range - Left/Right
47.5°
Articulation Angle - Left/Right
20°
Forward - 1st
2.5 mph
Forward - 2nd
3.4 mph
Forward - 3rd
4.9 mph
Forward - 4th
6.7 mph
Forward - 5th
10.4 mph
Forward - 6th
14.2 mph
Forward - 7th
19.5 mph
Forward - 8th
28.4 mph
Reverse - 1st
1.9 mph
Reverse - 2nd
3.9 mph
Reverse - 3rd
5.3 mph
Reverse - 4th
8.2 mph
Reverse - 5th
15.4 mph
Reverse - 6th
22.4 mph

Service Refill

Fuel Capacity
100.0 gal
Cooling System
12.9 gal
Hydraulic System - Tank
16.9 gal
Engine Oil
7.9 gal
Transmission/Differential/Final Drives
16.5 gal
Tandem Housing (each)
15.6 gal
Front Wheel Spindle Bearing Housing
0.13 gal
Circle Drive Housing
1.8 gal

Frame

Drawbar - Width
3.0 in
Circle - Diameter
60.2 in
Circle - Blade Beam Thickness
1.4 in
Drawbar - Height
6.0 in
Front Frame Structure - Height
11.0 in
Front Frame Structure - Width
8.0 in
Drawbar - Thickness
0.4 in
Front-Top/Bottom Plate - Width
10.0 in
Front-Top/Bottom Plate - Thickness
0.87 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
19.8 in
Width
6.8 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
12.0 ft
Moldboard - Height
24.0 in
Moldboard - Thickness
0.87 in
Arc Radius
16.3 in
Throat Clearance
4.9 in
Cutting Edge - Width
6.0 in
Cutting Edge - Thickness
0.6 in
End Bit - Width
6.0 in
End Bit - Thickness
0.6 in
Blade Pull - Base GVW
23737.0 lb
Blade Pull - Maximum GVW
29980.0 lb
Blade Down Pressure - Base GVW
15030.0 lb
Blade Down Pressure - Maximum GVW
27235.0 lb

Blade Range

Circle Centershift - Right
25.8 in
Circle Centershift - Left
25.8 in
Moldboard Sideshift - Right
26.0 in
Moldboard Sideshift - Left
20.1 in
Maximum Blade Position Angle
90°
Blade Tip Range - Forward
40°
Blade Tip Range - Backward
Maximum Lift above Ground
16.8 in
Maximum Depth of Cut
28.3 in
Maximum Shoulder Reach Outside of Tires - Right
75.0 in
Maximum Shoulder Reach Outside of Tires - Left
68.6 in

Ripper

Ripper Shank Holder Spacing
21.0 in
Ripping Depth - Maximum
8.9 in
Ripper Shank Holders
5
Penetration Force
17692.0 lb
Pryout Force
5660.0 lb
Machine Length Increase, Beam Raised
41.5 in

Scarifier

Front, V-Type, 5 or 11 Tooth - Scarifier Shank Holder Spacing
4.6 in
Front, V-Type, 5 or 11 Tooth - Scarifier Shank Holders
5/11
Front, V-Type, 5 or 11 Tooth - Scarifying Depth, Maximum
18.4 in
Front, V-Type, 5 or 11 Tooth - Working Width
40.6 in
Front, V-Type: Working Width
47.4 in
Mid, Straight - Ripping Depth, Maximum
12.5 in
Mid, Straight - Scarifier Shank Holder Spacing
4.4 in
Mid, Straight - Scarifier Shank Holders
17
Mid, Straight - Scarifying Depth, Maximum
16.8 in
Mid, Straight - Working Width
71.0 in
Mid, V-Type - Scarifier Shank Holder Spacing
4.6 in
Mid, V-Type - Scarifier Shank Holders
11
Mid, V-Type - Scarifying Depth, Maximum
11.5 in
Mid, V-Type - Working Width
46.6 in

Weights

Operating Weight - Typically Equipped
39892.0 lb
Gross Vehicle Weight - Maximum - Rear Axle
33312.0 lb
Gross Vehicle Weight - Base - Front Axle
8651.0 lb
Gross Vehicle Weight - Base - Rear Axle
26374.0 lb
Gross Vehicle Weight - Maximum - Total
48987.0 lb
Gross Vehicle Weight - Maximum - Front Axle
15675.0 lb
Operating Weight, Typically Equipped - Front Axle
10563.0 lb
Operating Weight, Typically Equipped - Rear Axle
29329.0 lb
Gross Vehicle Weight - Base - Total
35025.0 lb
Operating Weight, Typically Equipped - Total
39892.0 lb

Standards

Brakes
ISO 3450
ROPS/FOPS
ISO 3471/ISO 3449
Sound
ISO 6394; ISO 6395
Steering
ISO 5010

Emissions

Note
U.S. EPA Tier 4 Interim/EU Stage IIIB equivalent

Tires

17.5 R25 Tire (14x25 Rim) Dimension Adjustments – Height to Dimensions 1, 2, 8, 9, 10
-0.8 in
17.5 R25 Tire (14x25 Rim) Dimension Adjustments – Length Front Tire to Rear of Machine Dimension 6
-0.6 in
17.5 R25 Tire (14x25 Rim) Dimension Adjustments – Width to Tire Centerline Dimension 11
+4.1 in
17.5 R25 Tire (14x25 Rim) Dimension Adjustments – Width to Tire Front/Rear Tires Dimensions 12, 13
+7.6 in
Note
Dimension changes may vary by brand/type and inflation of tires.

Air Conditioning System

Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.6 kg of refrigerant which has a CO2 equivalent of 2.88 metric tonnes.
  • POWER TRAIN
    • Air cleaner, dual stage, dry type, diesel, with automatic engine derate and automatic dust ejector, service indicator through Cat Messenger
    • Air-to-air after cooler (ATAAC)
    • Belt, serpentine, automatic tensioner
    • Brakes, oil disc, four-wheel, hydraulic
    • Demand fan, hydraulic, swing-out
    • Differential lock/unlock, automatic
    • Drain, engine oil, ecology
    • Electronic over speed protection
    • Engine, C7.1 with ACERT Technology, Tier 4 Interim and Stage IIIB equivalent emission standards
    • Fuel tank, 378 L (100 gal), ground level access and sediment drain
    • Parking brake – multi-disc, sealed, oil-cooled
    • Priming pump, fuel
    • Rear axle, modular
    • Sediment drain, fuel tank
    • Tandem drive
    • Transmission, 8F/6R, power shift, direct drive
    • VHP Plus (Variable Horsepower)
  • ELECTRICAL
    • Alarm, back up
    • Alternator, 150 ampere, sealed
    • Batteries, maintenance free, heavy duty, 1,125 CCA
    • Breaker panel, ground accessible
    • Cab harness and electrical hydraulic valves
    • Electrical system, 24V
    • Grade Control Ready – Cab harness, software, electrical hydraulic valves, bosses and brackets
    • Lights, roof-mounted roading, reversing, LED stop and tail
    • Product Link Ready
    • Starter, electric
  • OPERATOR ENVIRONMENT
    • Accelerator
    • Air conditioning with heater
    • Arm and wrist rest, electronically 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, machine level
    • Gauge cluster (analog) – fuel, articulation, engine coolant temp, engine RPM, hydraulic oil temp, regen
    • Hour meter, digital
    • Joystick hydraulic controls right/left blade lift with float position, circle drive, blade sideshift and tip, centershift, front wheel lean, articulation and power steering
    • Joystick, adjustable armrests
    • Joystick gear selection
    • Joystick hydraulic power steering
    • 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 70 dB(A)
    • Seat, cloth-covered, comfort suspension
    • Seat belt, retractable 76 mm (3 in)
    • Storage area for cooler/lunchbox
    • Throttle control, electronic
    • Windows, laminated glass: – fixed front with intermittent wiper – side and rear (3)
  • FLUIDS
    • Antifreeze
    • Extended Life Coolant to –35° C (–30° F)
  • TIRES, RIMS AND WHEELS
    • Partial allowance for tires on 254 × 607 mm (10 × 24 in) multi-piece rims is included in the base machine price and weight
  • OTHER STANDARD EQUIPMENT
    • Accumulators, brake, dual certified
    • Anti-glare paint
    • Bumper, rear, integrated with hitch
    • CD ROM Parts Book
    • Clutch, circle drive slip
    • Cutting edges: – 152 × 16 mm (6 × 5/8 in) – curved DH-2 steel – 19 mm (3/4 in) mounting bolts
    • Doors (3), engine compartment, locking
    • Drawbar – 6 shoes, replaceable wear strips
    • Electrical hydraulic valves, hydraulic lines for base 8 functions
    • Endbits: – 16 mm (5/8 in) DH-2 steel – 19 mm (3/4 in) mounting bolts
    • Fluid check, ground level
    • Frame, articulated, with safety lock
    • Ground level engine shutdown
    • Hammer (emergency exit)
    • Horn, electric
    • Hydraulic lines for base functions
    • Lockout, hydraulic implement (for roading and servicing)
    • Moldboard – 3658 × 610 × 22 mm (12 ft × 24 in × 7/8 in)
    • Mounting, cab roof accessories
    • Pump, hydraulic, high capacity, 98 cm³ (6 in³)
    • Radiator, cleanout access (both sides with swing doors)
    • Secondary steering
    • Serviceability, LH side
    • SOSSM ports: engine, hydraulic, transmission, coolant, fuel
    • Tandem walkway/guards
    • Tool box
    • Tow hitch
  • ELECTRICAL
    • Alternator, 280 ampere
    • Batteries: extreme duty, 1,400 CCA
    • Converter, communication (CB)
    • Lights: Headlights, high
    • Lights: Headlights, low
    • Lights: Working lights, basic
    • Lights: Working lights, plus
    • Lights: Warning: beacon or strobe
    • Lights: Mounting for warning light
  • GUARDS
    • Fenders, front
    • Fenders, rear
    • Sound suppression (bottom)
    • Sound suppression (enclosure)
    • Transmission
  • OPERATOR ENVIRONMENT
    • Fan, defroster, rear window
    • Mirrors, outside: heated 24V
    • Mirrors, outside: mounted
    • Precleaner, HVAC
    • Radio ready, AM/FM
    • Seat, air suspension, cloth
    • Shade, sun
    • Wiper/washer, rear
  • POWER TRAIN
    • Fuel tank, fast fill
    • Oil, hydraulic, biodegradable synthetic
    • Precleaner, snow
    • Starter, heavy duty, 1,000 Amp
    • Transmission, autoshift
  • OTHER ATTACHMENTS
    • AccuGrade ARO
    • Accumulators, blade lift
    • Camera, rearview
    • Cat Product Link 321SR
    • Drain, ecology, engine Wiggins
    • Fenders, rear
    • Heater, engine coolant: 120V
    • Heater, engine coolant: 240V
    • Hydraulic arrangements with one or more additional hydraulic valves are available for rear ripper, dozer, snow plow and snow wing.
    • Snow wing mounting, frame ready
    • Sound suppression
    • Starting aid, ether
  • WORK TOOLS/G.E.T.
    • Blade extension, left hand, 610 mm (2 ft)
    • Cutting edges, curved
    • Endbits, overlay
    • Front lift group, mounting
    • Front lift group, mechanical
    • Grader bit, narrow and super penetration
    • Mid-Mount Scarifier, Package
    • Mid-Mount Scarifier, Mounting
    • Moldboard: 4267 mm × 610 mm × 22 mm (14 ft × 24 in × 7/8 in)
    • Moldboard: 4267 mm × 686 mm × 25 mm (14 ft × 27 in × 1 in)
    • Push plate, counterweight
    • Ripper, mounting
    • Ripper, rear
    • Ripper tooth
    • Scarifier, front
    • Snow Arrangement
    • Snow Wing Ready Package
  • MACHINE ARRANGEMENTS
    • Canadian Arrangement
    • European Arrangement
    • European Roading Arrangement