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Overview

The M Series Motor Grader has become the industry standard in operational efficiency and overall productivity. From building roads to maintaining them, M Series Motor Graders are designed to help you get more work done in less time. Unprecedented operator comfort and ease of service help to maximize your return on investment.

Engine

Units:
Base Power (1st gear) – Net 138.0 hp 103.0 kW Less
Engine Model Cat C6.6 ACERT Cat C6.6 ACERT Less
Bore 4.13 in 105.0 mm Less
Stroke 5.0 in 127.0 mm Less
Speed @ Rated Power 2,000 rpm 2,000 rpm Less
Base Power (1st gear) – Net (Metric) 140.0 hp 103.0 kW Less
Maximum Torque (VHP Plus – Net) 668.0 lb ft 906.0 N·m Less
Torque Rise (VHP Plus) 40% 40% Less
VHP Plus Range – Net 103-136 kW (138-182 hp) 103-136 kW (138-182 hp) Less
VHP Plus Range – Net (Metric) 103-136 kW (140-185 hp) 103-136 kW (140-185 hp) Less
Displacement 403.0 in3 6.6 L Less
Number of Cylinders 6 6 Less
Derating Altitude 11500.0 ft 3505.0 m Less
Standard – Fan Speed – Maximum 1,150 rpm 1,150 rpm Less
Standard – Fan Speed – Minimum 600 rpm 600 rpm Less
Standard – Ambient Capability 109.0 ° F 43.0 ° C Less
High Ambient – Fan Speed – Maximum 1,650 rpm 1,650 rpm Less
High Ambient – Fan Speed – Minimum 600 rpm 600 rpm Less
High Ambient Capability 122.0 ° F 50.0 ° C Less

Power Train

Forward/Reverse Gears 8 Forward/6 Reverse 8 Forward/6 Reverse Less
Transmission Direct drive, power shift, countershaft Direct drive, power shift, countershaft Less
Brakes – Service Multiple oil disc Multiple oil disc Less
Brakes – Service, Surface Area 3565.0 in2 23000.0 cm2 Less
Brakes – Parking Multiple oil disc Multiple oil disc Less
Brakes – Secondary Dual circuit control system Dual circuit control system Less

Hydraulic System

Circuit Type Electro-hydraulic load sensing, closed center Electro-hydraulic load sensing, closed center Less
Pump Type Variable piston Variable piston Less
Pump Output 55.7 gal/min 210.0 L/min Less
Maximum System Pressure 3500.0 psi 24100.0 kPa Less
Standby Pressure 450.0 psi 3100.0 kPa Less

Operating Specifications

Top Speed – Forward 29.5 mph 47.5 km/h Less
Top Speed – Reverse 23.2 mph 37.5 km/h Less
Turning Radius, Outside Front Tires 24.08 ft 7.34 m Less
Steering Range – Left/Right 47.5° 47.5° Less
Articulation Angle – Left/Right 20° 20° Less
Forward – 1st 2.6 mph 4.1 km/h Less
Forward – 2nd 3.5 mph 5.6 km/h Less
Forward – 3rd 5.1 mph 8.2 km/h Less
Forward – 4th 7.0 mph 11.2 km/h Less
Forward – 5th 10.8 mph 17.5 km/h Less
Forward – 6th 14.8 mph 23.7 km/h Less
Forward – 7th 20.3 mph 32.7 km/h Less
Forward – 8th 29.5 mph 47.5 km/h Less
Reverse – 1st 2.0 mph 3.3 km/h Less
Reverse – 2nd 3.8 mph 6.1 km/h Less
Reverse – 3rd 5.5 mph 8.9 km/h Less
Reverse – 4th 8.6 mph 13.8 km/h Less
Reverse – 5th 16.0 mph 25.8 km/h Less
Reverse – 6th 23.3 mph 37.5 km/h Less

Service Refill

Fuel Capacity 100.0 gal 378.0 L Less
Cooling System 8.7 gal 33.0 L Less
Hydraulic System – Tank 16.9 gal 64.0 L Less
Engine Oil 3.7 gal 14.0 L Less
Transmission/Differential/Final Drives 16.5 gal 62.5 L Less
Tandem Housing (each) 15.6 gal 59.0 L Less
Front Wheel Spindle Bearing Housing 0.1 gal 0.5 L Less
Circle Drive Housing 1.8 gal 7.0 L Less

Frame

Drawbar – Width 3.0 in 76.2 mm Less
Circle – Diameter 60.2 in 1530.0 mm Less
Circle – Blade Beam Thickness 1.4 in 35.0 mm Less
Drawbar – Height 6.0 in 152.0 mm Less
Circle – Height 5.3 in 134.5 mm Less
Front Frame Structure – Height 11.0 in 280.0 mm Less
Front Frame Structure – Thickness 0.9 in 22.0 mm Less
Front Frame Structure – Width 10.0 in 255.0 mm Less
Front Axle – Height to Center 23.5 in 596.0 mm Less
Front Axle – Wheel Lean, Left/Right 18° 18° Less
Front Axle – Total Oscillation per Side 32° 32° Less

Tandems

Height 19.76 in 502.0 mm Less
Width 6.76 in 171.7 mm Less
Sidewall Thickness – Inner 0.5 in 14.0 mm Less
Sidewall Thickness – Outer 0.6 in 16.0 mm Less
Drive Chain Pitch 1.8 in 44.5 mm Less
Wheel Axle Spacing 59.5 in 1510.0 mm Less
Tandem Oscillation – Front Up 15° 15° Less
Tandem Oscillation – Front Down 25° 25° Less

Moldboard

Blade Width 12.0 ft 3.7 m Less
Moldboard – Height 24.0 in 610.0 mm Less
Moldboard – Thickness 0.87 in 22.0 mm Less
Arc Radius 16.3 in 413.0 mm Less
Throat Clearance 5.2 in 134.0 mm Less
Cutting Edge – Width 6.0 in 152.0 mm Less
Cutting Edge – Thickness 0.6 in 16.0 mm Less
End Bit – Width 6.0 in 152.0 mm Less
End Bit – Thickness 0.6 in 16.0 mm Less
Blade Pull – Base GVW 21571.0 lb 9785.0 kg Less
Blade Pull – Maximum GVW 26948.0 lb 12223.0 kg Less
Down Pressure – Base GVW 13869.0 lb 6291.0 kg Less
Down Pressure – Maximum GVW 25623.0 lb 11622.0 kg Less
Moldboard – Width 12.0 ft 3.7 m Less

Blade Range

Circle Centershift – Right 25.8 in 656.0 mm Less
Circle Centershift – Left 25.8 in 656.0 mm Less
Moldboard Sideshift – Right 26.0 in 660.0 mm Less
Moldboard Sideshift – Left 20.1 in 510.0 mm Less
Maximum Blade Position Angle 90° 90° Less
Blade Tip Range – Forward 40° 40° Less
Blade Tip Range – Backward Less
Maximum Shoulder Reach Outside of Tires – Right 75.0 in 1905.0 mm Less
Maximum Shoulder Reach Outside of Tires – Left 68.6 in 1742.0 mm Less
Maximum Lift above Ground 16.8 in 427.0 mm Less
Maximum Depth of Cut 28.3 in 720.0 mm Less

Ripper

Ripper Shank Holder Spacing 21.0 in 533.0 mm Less
Ripping Depth – Maximum 17.0 in 428.0 mm Less
Ripper Shank Holders 5 5 Less
Penetration Force 17705.0 lb 8031.0 kg Less
Pryout Force 26303.0 lb 11931.0 kg Less
Machine Length Increase, Beam Raised 39.2 in 995.0 mm Less

Scarifier

Front, V-Type, 5 or 11 Tooth – Scarifier Shank Holder Spacing 4.6 in 116.0 mm Less
Front, V-Type, 5 or 11 Tooth – Scarifier Shank Holders 5/11 5/11 Less
Front, V-Type, 5 or 11 Tooth – Scarifying Depth, Maximum 18.4 in 467.0 mm Less
Front, V-Type, 5 or 11 Tooth – Working Width 47.4 in 1205.0 mm Less
Mid, Straight – Scarifier Shank Holder Spacing 4.4 in 111.0 mm Less
Mid, Straight – Scarifier Shank Holders 17 17 Less
Mid, Straight – Scarifying Depth, Maximum 12.5 in 317.0 mm Less
Mid, Straight – Working Width 71.0 in 1800.0 mm Less
Mid, V-Type – Scarifier Shank Holder Spacing 4.6 in 116.0 mm Less
Mid, V-Type – Scarifier Shank Holders 11 11 Less
Mid, V-Type – Scarifying Depth, Maximum 11.5 in 292.0 mm Less
Mid, V-Type – Working Width 46.6 in 1184.0 mm Less

Weights

Operating Weight – Typically Equipped 37204.0 lb 16876.0 kg Less
Gross Vehicle Weight – Maximum – Front Axle 14748.0 lb 6689.0 kg Less
Gross Vehicle Weight – Maximum – Rear Axle 29942.0 lb 13582.0 kg Less
Gross Vehicle Weight – Base – Front Axle 7982.0 lb 3621.0 kg Less
Gross Vehicle Weight – Base – Rear Axle 23968.0 lb 10872.0 kg Less
Gross Vehicle Weight – Maximum – Total 44690.0 lb 20271.0 kg Less
Gross Vehicle Weight – Base – Total 31950.0 lb 14493.0 kg Less
Gross Vehicle Weight – Typically Equipped – Front Axle 9974.0 lb 4524.0 kg Less
Gross Vehicle Weight – Typically Equipped – Rear Axle 27230.0 lb 16876.0 kg Less
Gross Vehicle Weight – Typically Equipped – Total 37204.0 lb 16876.0 kg Less

Dimensions

Height – Top of Cab Product Link (cellular) 133.0 in 3378.0 mm Less
Length – Push Plate to Ripper 390.9 in 9930.0 mm Less
Length – Push Plate to Ripper Retracted 378.4 in 9612.0 mm Less
Height – Top of Cab 130.2 in 3308.0 mm Less
Width – Outside Front Tires 98.9 in 2511.0 mm Less
Length – Front Axle to Mid Tandem 232.9 in 5915.0 mm Less
Length – Front Tire to Rear of Machine 332.1 in 8436.0 mm Less
Length – Front Axle to Moldboard 96.4 in 2450.0 mm Less
Length – Between Tandem Axles 59.5 in 1511.0 mm Less
Width – Outside Rear Tires 98.1 in 2491.0 mm Less
Width – Tire Center Lines 83.5 in 2120.0 mm Less
Height – Front Axle Center 23.5 in 596.0 mm Less
Height to Exhaust Stack 113.6 in 2885.0 mm Less
Height to Top of Cylinders 115.1 in 2924.0 mm Less
Ground Clearance at Rear Axle 13.7 in 348.0 mm Less

Standards

Brakes ISO 3450:1996 ISO 3450:1996 Less
ROPS/FOPS ISO 3471:1994/ISO 3449:1992 ISO 3471:1994/ISO 3449:1992 Less
Sound ISO 6394:2008/ISO 6395:2008 ISO 6394:2008/ISO 6395:2008 Less
Steering ISO 5010:2007 ISO 5010:2007 Less

Net Power: VHP Plus – Net

Gear: Forward – 1st 138.0 hp 103.0 kW Less
Gear: Forward – 2nd 143.0 hp 106.0 kW Less
Gear: Forward – 3rd 148.0 hp 110.0 kW Less
Gear: Forward – 4th 153.0 hp 114.0 kW Less
Gear: Forward – 5th 158.0 hp 118.0 kW Less
Gear: Forward – 6th 163.0 hp 121.0 kW Less
Gear: Forward – 7th 168.0 hp 125.0 kW Less
Gear: Forward – 8th 182.0 hp 136.0 kW Less
Gear: Reverse – 1st 138.0 hp 103.0 kW Less
Gear: Reverse – 2nd 143.0 hp 106.0 kW Less
Gear: Reverse – 3rd-6th 148.0 hp 110.0 kW Less

Operator Station

Comfort, productivity, advanced technology


Steering and Implement Controls

Unprecedented precision and ease of operation


Engine

Power and reliability


Power Train

Maximum power to the ground


Structures and Drawbar-Circle-Moldboard

Service ease and precise blade control


Hydraulics

Advanced machine control


Integrated Technologies

Solutions to make work easier and more efficient


Safety

Designed with protection in mind


Serviceability and Customer Support

When uptime counts


Smart Machine Systems

Advanced Diagnostics


Work Tools and Attachments

Equip your machine for the job


Sustainability

Thinking generations ahead


120M Standard 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
  • • Differential Lock/Unlock, Automatic
  • • Drain, engine oil, ecology
  • • Electronic over speed protection
  • • Engine Cat C6.6 with ACERT Technology, diesel, with automatic engine derate and idle control. Note: Engines meet non-current U.S. EPA Tier 3 or EU Stage IIIA emission standards.
  • • Fuel tank, 341 L (90 gal), ground level access and sediment drain
  • • Muffler, underhood
  • • 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 Plus)

ELECTRICAL
  • • Alarm, back up
  • • Alternator, 80 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
  • • Starter, electric

OPERATOR ENVIRONMENT
  • • Accelerator
  • • Air conditioning with heater
  • • Arm and wrist rest, electronically adjustable
  • • Articulation, automatic Return-to-Center
  • • 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
  • • 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 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
  • • 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 229 × 607 mm (9 × 24 in) single-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 – 4 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
  • • Ground level fueling
  • • 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
  • • Secondary steering
  • • Serviceability, left-hand side
  • • S•O•SSM ports: engine, hydraulic, transmission, coolant, fuel
  • • Tandem walkway/guards
  • • Tool box
  • • Tow hitch

120M Optional Equipment

ELECTRICAL
  • • Alternator, 150 ampere
  • • Batteries: – extreme duty, 1,400 CCA
  • • Converter, communication (CB)
  • • Lights: – Headlights, high – Headlights, low – Working lights, basic – Working lights, plus – Warning: beacon or strobe – Mounting for warning light

GUARDS
  • • Articulation guard
  • • Axle hose guard
  • • Fenders, front
  • • Fenders, rear
  • • Sound guard (bottom)
  • • Transmission guard

OPERATOR ENVIRONMENT
  • • Deluxe CD radio with MP3 and Bluetooth technology
  • • Fan, defroster, rear window
  • • Mirrors, outside: – heated 24V – mounted
  • • Precleaner, HVAC
  • • Radio ready, AM/FM
  • • Seat, air suspension, cloth
  • • Shade, sun
  • • Wiper/washer, rear

POWER TRAIN
  • • Precleaner, snow/debris
  • • Transmission, autoshift

OTHER ATTACHMENTS
  • • AccuGrade ARO
  • • Accumulators, blade lift
  • • Camera, rearview
  • • Cat Grade Control Cross Slope
  • • Cat Product Link 321 (Satellite)
  • • Cat Product Link 522 (Cellular)
  • • Compressor/tank, air
  • • Heater, engine coolant: – 120V – 240V
  • • Hydraulic arrangements with one or more additional hydraulic valves are available for ripper, dozer, snow wings, front lift group, mid-mount scarifier.
  • • Security system
  • • Snow wing mounting, frame ready
  • • Sound suppression
  • • Starting aid, ether

WORK TOOLS/GROUND ENGAGING TOOLS
  • • Blade extension, left hand, 610 mm (2 ft)
  • • Endbits, overlay
  • • Front lift group, mounting
  • • Front lift group
  • • Mid-Mount Scarifier, Package
  • • Mid-Mount Scarifier, Mounting
  • • Moldboard: – 4267 × 610 × 22 mm (14 ft × 24 in × 7/8 in) – 4267 × 686 × 25 mm (14 ft × 27 in × 1 in)
  • • Push plate
  • • Ripper, mounting
  • • Ripper, rear
  • • Ripper tooth
  • • Scarifier, front

MACHINE ARRANGEMENTS
  • • Snow Arrangement

OPTIONAL TIRE ARRANGEMENTS
  • • Rim Size – 9 × 24; Wheel Group – Single-Piece; Tires – 13.00-24
  • • Rim Size – 9 × 24; Wheel Group – Single-Piece; Tires – 14.0R24
  • • Rim Size – 13 × 25; Wheel Group – Single-Piece; Tires – 17.5R25
  • • Rim Size – 10 × 24; Wheel Group – Multi-Piece; Tires – 14.00-24
  • • Rim Size – 10 × 24; Wheel Group – Multi-Piece; Tires – 14.0R24
  • • Rim Size – 14 × 25; Wheel Group – Multi-Piece; Tires – 17.5R25

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