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120M Motor Graders

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CALCULATE FINANCE

Operator Station

Steering and Implement Controls

Engine

Power Train

Structures and Drawbar-Circle-Moldboard

Hydraulics

Integrated Technologies

Safety

Serviceability and Customer Support

Smart Machine Systems

Work Tools and Attachments

Sustainability

Engine
Base Power (1st Gear) - Net 103 kW (138 HP)
Engine Model Cat C6.6 ACERT
Bore 105 mm (4.13 in)
Stroke 127 mm (5 in)
Speed at Rated Power 2,000 rpm
Base Power (1st Gear) - Net - Metric 103 kW (140 HP)
Maximum Torque - VHP Plus - Net 906 N·m (668 lb/ft)
Torque Rise - VHP Plus 40%
VHP Plus Range - Net 103-136 kW (138-182 hp)
VHP Plus Range - Net - Metric 103-136 kW (140-185 hp)
Displacement 6.6 l (403 inu00b3)
Number of Cylinders 6
Derating Altitude 3505 m (11500 ft)
Standard - Fan Speed - Maximum 1,150 rpm
Standard - Fan Speed - Minimum 600 rpm
Standard - Ambient Capability 43 u00b0C (109 u00b0F)
High Ambient - Fan Speed - Maximum 1,650 rpm
High Ambient - Fan Speed - Minimum 600 rpm
High - Ambient Capability 50 u00b0C (122 u00b0F)
Power Train
Forward/Reverse Gears 8 Forward/6 Reverse
Transmission Direct drive, power shift, countershaft
Brakes - Service Multiple oil disc
Brakes - Service - Surface Area 23000 cmu00b2 (3565 inu00b2)
Brakes - Parking Multiple oil disc
Brakes - Secondary Dual circuit control system
Hydraulic System
Circuit Type Electro-hydraulic load sensing, closed center
Pump Type Variable piston
Pump Output 210 l/min (55.7 gal/min)
Maximum System Pressure 24100 kPa (3500 psi)
Standby Pressure 3100 kPa (450 psi)
Operating Specifications
Top Speed - Forward 47.5 km/h (29.5 mile/h)
Top Speed - Reverse 37.5 km/h (23.3 mile/h)
Turning Radius - Outside Front Tires 7.3 m (24 ft)
Steering Range - Left/Right 47.5u00b0
Articulation Angle - Left/Right 20u00b0
Forward - 1st 4.1 km/h (2.6 mile/h)
Forward - 2nd 5.6 km/h (3.5 mile/h)
Forward - 3rd 8.2 km/h (5.1 mile/h)
Forward - 4th 11.2 km/h (7 mile/h)
Forward - 5th 17.5 km/h (10.8 mile/h)
Forward - 6th 23.7 km/h (14.8 mile/h)
Forward - 7th 32.7 km/h (20.3 mile/h)
Forward - 8th 47.5 km/h (29.5 mile/h)
Reverse - 1st 3.3 km/h (2 mile/h)
Reverse - 2nd 6.1 km/h (3.8 mile/h)
Reverse - 3rd 8.9 km/h (5.5 mile/h)
Reverse - 4th 13.8 km/h (8.6 mile/h)
Reverse - 5th 25.8 km/h (16 mile/h)
Reverse - 6th 37.5 km/h (23.3 mile/h)
Service Refill
Fuel Capacity 378 l (100 gal (US))
Cooling System 33 l (8.7 gal (US))
Hydraulic System - Tank 64 l (16.9 gal (US))
Engine Oil 14 l (3.7 gal (US))
Transmission - Differential - Final Drives 62.5 l (16.5 gal (US))
Tandem Housing - Each 59 l (15.6 gal (US))
Front Wheel Spindle Bearing Housing 0.5 l (0.13 gal (US))
Circle Drive Housing 7 l (1.8 gal (US))
Frame
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)
Circle - Height 134 mm (5.3 in)
Front Frame Structure - Height 280 mm (11 in)
Front Frame Structure - Thickness 22 mm (0.9 in)
Front Frame Structure - Width 255 mm (10 in)
Front Axle - Height to Center 596 mm (23.5 in)
Front Axle - Wheel Lean - Left/Right 18u00b0
Front Axle - Total Oscillation per Side 32u00b0
Tandems
Height 502 mm (19.8 in)
Width 172 mm (6.8 in)
Sidewall Thickness - Inner 14 mm (0.5 in)
Sidewall Thickness - Outer 16 mm (0.6 in)
Drive Chain Pitch 44.5 mm (1.8 in)
Wheel Axle Spacing 1510 mm (59.5 in)
Tandem Oscillation - Front Up 15u00b0
Tandem Oscillation - Front Down 25u00b0
Moldboard
Blade Width 3.7 m (12 ft)
Moldboard - Height 610 mm (24 in)
Moldboard - Thickness 22 mm (0.87 in)
Arc Radius 413 mm (16.3 in)
Throat Clearance 134 mm (5.2 in)
Cutting Edge Width 152 mm (6 in)
Cutting Edge Thickness 16 mm (0.6 in)
End Bit - Width 152 mm (6 in)
End Bit - Thickness 16 mm (0.6 in)
Blade Pull - Base GVW 9785 kg (21571 lb)
Blade Pull - Maximum GVW 12223 kg (26948 lb)
Down Pressure - Base GVW 6291 kg (13869 lb)
Down Pressure - Maximum GVW 11622 kg (25623 lb)
Moldboard - Width 3.7 m (12 ft)
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 90u00b0
Blade Tip Range - Forward 40u00b0
Blade Tip Range - Backward 5u00b0
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
Ripper Shank Holder Spacing 533 mm (21 in)
Ripping Depth - Maximum 428 mm (17 in)
Ripper Shank Holders 5
Penetration Force 8031 kg (17705 lb)
Pry-Out Force 11931 kg (26303 lb)
Machine Length Increase, Beam Raised 995 mm (39.2 in)
Scarifier
Front, V-Type, 5 or 11 Tooth - Scarifier Shank Holder Spacing 116 mm (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 467 mm (18.4 in)
Front, V-Type, 5 or 11 Tooth - Working Width 1205 mm (47.4 in)
Mid, Straight - Scarifier Shank Holder Spacing 111 mm (4.4 in)
Mid, Straight - Scarifier Shank Holders 17
Mid, Straight - Scarifying Depth, Maximum 317 mm (12.5 in)
Mid, Straight - Working Width 1800 mm (71 in)
Mid, V-Type - Scarifier Shank Holder Spacing 116 mm (4.6 in)
Mid, V-Type - Scarifier Shank Holders 11
Mid, V-Type - Scarifying Depth, Maximum 292 mm (11.5 in)
Mid, V-Type - Working Width 1184 mm (46.6 in)
Weights
Operating Weight - Typically Equipped 16875 kg (37204 lb)
Gross Vehicle Weight - Maximum - Front Axle 6689 kg (14748 lb)
Gross Vehicle Weight - Maximum - Rear Axle 13582 kg (29942 lb)
Gross Vehicle Weight - Base - Front Axle 3621 kg (7982 lb)
Gross Vehicle Weight - Base - Rear Axle 10872 kg (23968 lb)
Gross Vehicle Weight - Maximum - Total 20271 kg (44690 lb)
Gross Vehicle Weight - Base - Total 14493 kg (31950 lb)
Gross Vehicle Weight - Typically Equipped - Front Axle 4524 kg (9974 lb)
Gross Vehicle Weight - Typically Equipped - Rear Axle 12351 kg (27230 lb)
Gross Vehicle Weight - Typically Equipped - Total 16875 kg (37204 lb)
Dimensions
Height - Top of Cab Product Link 3378 mm (133 in)
Length - Push Plate to Ripper 9930 mm (390 in)
Length - Push Plate to Ripper Retracted 9612 mm (378 in)
Height - Top of Cab 3308 mm (130 in)
Width - Outside Front Tires 2511 mm (98.9 in)
Length - Front Axle to Mid Tandem 5915 mm (232 in)
Length - Front Tire to Rear of Machine 8436 mm (332 in)
Length - Front Axle to Moldboard 2450 mm (96.4 in)
Length - Between Tandem Axles 1511 mm (59.5 in)
Width - Outside Rear Tires 2491 mm (98.1 in)
Width - Tire Center Lines 2120 mm (83.5 in)
Height - Front Axle Center 596 mm (23.5 in)
Height - Exhaust Stack 2885 mm (113 in)
Height - Top of Cylinders 2924 mm (115 in)
Ground Clearance - Rear Axle 348 mm (13.7 in)
Standards
Brakes ISO 3450:1996
ROPS/FOPS ISO 3471:1994/ISO 3449:1992
Sound ISO 6394:2008/ISO 6395:2008
Steering ISO 5010:2007
Net Power - VHP Plus
Gear - Forward 1st 103 kW (138 HP)
Gear - Forward 2nd 106 kW (143 HP)
Gear - Forward 3rd 110 kW (148 HP)
Gear - Forward 4th 114 kW (153 HP)
Gear - Forward 5th 118 kW (158 HP)
Gear - Forward 6th 121 kW (163 HP)
Gear - Forward 7th 125 kW (168 HP)
Gear - Forward 8th 136 kW (182 HP)
Gear - Reverse 1st 103 kW (138 HP)
Gear - Reverse 2nd 106 kW (143 HP)
Gear - Reverse 3rd-6th 110 kW (148 HP)

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

Optional Equipment

  • ELECTRICAL
    • Alternator, 150 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
    • 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
    • Mirrors, outside: 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
    • Heater, engine coolant: 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)
    • Moldboard: 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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