Cat Motor Graders:

120M2 Motor Grader

Base Power (1st gear) - Net
145.0 hp
Operating Weight - Typically Equipped
39892.0 lb
Blade Width
12.0 ft
Engine Model
Cat® C7.1 ACERT™

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.



Benefits & Features

Product Specs

  • Engine

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

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

  • Blade Width
    12.0ft
    Moldboard - Height
    24.0in
    Moldboard - Thickness
    0.87in
    Arc Radius
    16.3in
    Throat Clearance
    4.9in
    Cutting Edge - Width
    6.0in
    Cutting Edge - Thickness
    0.6in
    End Bit - Width
    6.0in
    End Bit - Thickness
    0.6in
    Blade Pull - Base GVW
    23737.0lb
    Blade Pull - Maximum GVW
    29980.0lb
    Blade Down Pressure - Base GVW
    15030.0lb
    Blade Down Pressure - Maximum GVW
    27235.0lb
  • Operating Specifications

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

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

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

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

  • Drawbar - Width
    3.0in
    Circle - Diameter
    60.2in
    Circle - Blade Beam Thickness
    1.4in
    Drawbar - Height
    6.0in
    Front Frame Structure - Height
    11.0in
    Front Frame Structure - Width
    8.0in
    Drawbar - Thickness
    0.4in
    Front-Top/Bottom Plate - Width
    10.0in
    Front-Top/Bottom Plate - Thickness
    0.87in
    Front Axle - Height to Center
    22.5in
    Front Axle - Wheel Lean, Left/Right
    18°
    Front Axle - Total Oscillation per Side
    32°
  • Blade Range

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

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

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

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

  • Height
    19.8in
    Width
    6.8in
    Sidewall Thickness - Inner
    0.5in
    Sidewall Thickness - Outer
    0.6in
    Drive Chain Pitch
    1.8in
    Wheel Axle Spacing
    59.5in
    Tandem Oscillation - Front Up
    15°
    Tandem Oscillation - Front Down
    25°
  • 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
    -0.8in
    17.5 R25 Tire (14x25 Rim) Dimension Adjustments – Length Front Tire to Rear of Machine Dimension 6
    -0.6in
    17.5 R25 Tire (14x25 Rim) Dimension Adjustments – Width to Tire Centerline Dimension 11
    +4.1in
    17.5 R25 Tire (14x25 Rim) Dimension Adjustments – Width to Tire Front/Rear Tires Dimensions 12, 13
    +7.6in
    Note
    Dimension changes may vary by brand/type and inflation of tires.

Equipment

  • 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

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