- Overall Length: 27.85 ft / 8488 mm
- Width Over Tires: 8.14 ft / 2481 mm
- Wheelbase: 19.4 ft / 5915 mm
- Rear Ground Clearance: 1.13 ft / 347 mm
Published dimensions and weight
Caterpillar 12M
The Caterpillar 12M is a motor grader of about 15 t, powered by a 173 hp engine.
01Published dimensions and weight
Dimensions reference
Measurement reference — not to scale
01Dimensions referenceLength × width × height
02Std Operation Weight - Total32016 lb14522 kg
03Selected published values198
Motor graders are commonly used to shape, level and maintain roads, pads and drainage surfaces. Published rows for Caterpillar 12M include published moldboard width of 12 ft / 3668 mm, published maximum power of 173 hp / 129.1 kw, published operating weight of 32016 lb / 14522 kg. These values describe the published configuration; verify the specific machine's configuration, attachments and records.
- Compare the published “Overall Length” field (27.85 ft / 8488 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Width Over Tires” field (8.14 ft / 2481 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Wheelbase” field (19.4 ft / 5915 mm) with the specific machine's configuration and records; options and condition can differ.
02Specifications
Published values, clearly grouped.
Published specifications and measurements are organized by section for quick reference.
Dimensions
Overall Length27.85 ft8488 mm
Width Over Tires8.14 ft2481 mm
Wheelbase19.4 ft5915 mm
Rear Ground Clearance1.13 ft347 mm
Tandem Axle Wheelbase4.96 ft1511 mm
Front Ground Clearance1.87 ft572 mm
Blade Base8.24 ft2511 mm
Height To Top Of Isomount Cab10.75 ft3278 mm
Length - Between Tandem Axles59.5 in1511.3 mm
Length - Counterweight To Ripper389.3 in9888.22 mm
Length - Front Axle To Mid Tandem232.8 in5913.12 mm
Length - Front Axle To Moldboard98.85 in2510.79 mm
Length - Front Tire To Rear Of Machine334.1 in8486.14 mm
Height - Top Of Cylinders113.7 in2887.98 mm
Height - Top Of Cab10.75 ft0.28 m
Height - Front Axle Center22.5 in571.5 mm
Height - Exhaust Stack112.4 in2854.96 mm
Width - Outside Front Tires97.7 in2481.58 mm
Width - Outside Rear Tires97.7 in2481.58 mm
Width - Tire Center Lines84.1 in2136.14 mm
Ground Clearance - Rear Axle13.6 in345.44 mm
Ripper
Pry-Out Force25972 lb11780.8 kg
Penetration Force18911 lb8577.9 kg
Machine Length Increase, Beam Raised39.2 in995.7 mm
Engine
Number Of Cylinders66
Net Power Gear 4-6173 hp129 kw
Engine Make22362236
Engine ModelC6.6 ACERT VHPC6.6 ACERT VHP
Net Power Gear 1-2163 hp121 kw
Power Measured @2000 rpm2000 rpm
Net Power Gear 5-6173 hp129 kw
Max Power173 hp129.1 kw
Net Power Gears 7-8173 hp129 kw
Displacement403 cu in6.7 L
Bore4.2 in105 mm
Stroke5 in125 mm
Derating Altitude11500 ft3505.2 m
Maximum Torque690 lb ft935.6 Nm
Base Power (1st Gear) - Net158 hp117.9 kw
Speed At Rated Power2000 RPM2000 RPM
High - Ambient Capability122 degrees122 degrees
High Ambient - Fan Speed - Maximum1650 RPM1650 RPM
High Ambient - Fan Speed - Minimum550 RPM550 RPM
Vhp Plus Range - Net118-144 kW (158-193 hp)118-144 kW (158-193 hp)
Torque Rise - Vhp Plus40%40%
Base Power (All Gears) - Net158 hp117.9 kw
Standard - Fan Speed - Maximum1150 RPM1150 RPM
Standard - Fan Speed - Minimum550 RPM550 RPM
Standard - Ambient Capability109 degrees109 degrees
Vhp Range - Net118 -129 kW (158-173 hp)118 -129 kW (158-173 hp)
Frame
Front Frame Structure - Height0.9 ft254 mm
Front Frame Structure - Width0.9 ft254 mm
Front Frame Structure - Thickness0.1 ft16.1 mm
Circle - Diameter60.2 in1529.1 mm
Drawbar - Height6 in152.4 mm
Front Axle - Height To Center22.5 in571.5 mm
Circle - Blade Beam Thickness1.4 in35.6 mm
Front Axle - Total Oscillation Per Side32 degrees32 degrees
Drawbar - Thickness0.4 in10.2 mm
Drawbar - Width3 in76.2 mm
Front Axle - Wheel Lean - Left/Right18 degrees18 degrees
Drawbar - Yoke Bar Thickness0.8 in19.1 mm
Operational
Std Operation Weight - Front Axle8836 lb4008 kg
Std Operation Weight - Rear Axle23180 lb10514 kg
Hydraulic System Fluid Capacity16 gal60 L
Std Operation Weight - Total32016 lb14522 kg
Max Operation Weight - Front Axle15284 lb6933 kg
Max Operation Weight - Rear Axle29406 lb13338 kg
Max Operation Weight - Total44690 lb20271 kg
Fuel Capacity90 gal340 L
Cooling System Fluid Capacity10.4 gal40 L
Rear Diff/Final Drive Fluid Capacity13.2 gal50 L
Circle Gearbox Fluid Capacity1.8 gal7 L
Tandem Case Fluid Capacity (Each)16.9 gal61 L
Power Train
Brakes - ParkingMultiple oil discMultiple oil disc
Brakes - ServiceMultiple oil-discMultiple oil-disc
TransmissionDirect drive, power shift, countershaftDirect drive, power shift, countershaft
Forward/Reverse Gears8 Fwd / 6 Rev8 Fwd / 6 Rev
Brakes - SecondaryDual circuit control systemDual circuit control system
Brakes - Service - Surface Area3565 in22.3 m2
Steering
Articulation Angle20 degrees20 degrees
Turning Radius24.5 ft7.5 m
Transmission
Transmission Typedirect drive, power shift, countershaftdirect drive, power shift, countershaft
Number Of Gears - Forward88
Number Of Gears - Reverse66
Max Speed - Forward27.7 mph44.5 km/h
Max Speed - Reverse23.5 mph37.8 km/h
Front Axle
Wheel Lean18 degrees18 degrees
Oscillation - Total32 degrees32 degrees
Ground Clearance1.9 ft572 mm
Weights
Gross Vehicle Weight - Base - Total33064 lb14997.6 kg
Gross Vehicle Weight - Maximum - Total44690 lb20271.1 kg
Gross Vehicle Weight - Base - Rear Axle23145 lb10498.4 kg
Gross Vehicle Weight - Base - Front Axle9919 lb4499.2 kg
Gross Vehicle Weight - Maximum - Front Axle15954 lb7236.7 kg
Gross Vehicle Weight - Maximum - Rear Axle48736 lb22106.3 kg
Hydraulic System
Standby Pressure450 psi450 psi
Maximum System Pressure3500 psi3500 psi
Pump TypeVariable pistonVariable piston
Pump Flow51 gal/min193 L/min
Relief Valve Pressure3500 psi24100 kPa
Circuit TypeElectro-hydraulic closed center, load sensing,Electro-hydraulic closed center, load sensing,
Pump Output51 gal/min51 gal/min
Moldboard
Moldboard Width12 ft3668 mm
Moldboard Height24 in609.6 mm
Moldboard Thickness0.9 in22 mm
Max Depth Of Cut28.3 in720 mm
Side Shift Left20.1 in510 mm
Side Shift Right26 in660 mm
Blade Pull At Max Weight26465 lb12004 kg
Blade Down Pressure27066.2 lb12277 kg
Blade Width12 ft3.7 m
Arc Radius16.3 in414.1 mm
Throat Clearance4.9 in124 mm
Cutting Edge Width6 in152.4 mm
Cutting Edge Thickness0.6 in15.3 mm
End Bit - Width6 in152.4 mm
End Bit - Thickness0.6 in15.3 mm
Moldboard - Height24 in609.6 mm
Moldboard - Thickness0.9 in22.1 mm
Blade Pull - Maximum Gvw25862 lb11730.9 kg
Blade Pull - Base Gvw20830 lb9448.4 kg
Blade Down Pressure - Base Gvw17566 lb7967.9 kg
Blade Down Pressure - Maximum Gvw28254 lb12815.8 kg
Circle
Diameter60.2 in1530 mm
Shift Left25.8 in656 mm
Shift Right25.8 in656 mm
Max Reach Outside Tires - Left68.6 in1742 mm
Max Reach Outside Tires - Right75 in1905 mm
Max Lift Above Ground16.8 in427 mm
Blade Tip Angle - Front40 degrees40 degrees
Blade Tip Angle - Rear5 degrees5 degrees
Operating Specifications
Top Speed - Forward27.7 mph44.6 km/h
Top Speed - Reverse23.5 mph37.9 km/h
Turning Radius - Outside Front Tires24.5 ft7.5 m
Steering Range - Left/Right47.5 degrees47.5 degrees
Articulation Angle - Left/Right20 degrees20 degrees
Forward - 8th27.7 mph44.6 km/h
Forward - 7th19 mph30.6 km/h
Forward - 6th13.8 mph22.3 km/h
Forward - 5th10.2 mph16.5 km/h
Forward - 4th6.5 mph10.5 km/h
Forward - 3rd4.8 mph7.7 km/h
Forward - 2nd3.3 mph5.4 km/h
Forward - 1st2.4 mph3.9 km/h
Reverse - 6th23.5 mph37.9 km/h
Reverse - 5th16.1 mph26 km/h
Reverse - 4th8.6 mph13.9 km/h
Reverse - 3rd5.6 mph9.1 km/h
Reverse - 2nd3.8 mph6.2 km/h
Reverse - 1st2 mph3.3 km/h
Standards
BrakesISO 3450:1996ISO 3450:1996
Rops/FopsISO 3471:1992 / ISO 3449:1992ISO 3471:1992 / ISO 3449:1992
SoundISO 6394:1998 / ISO 6395:1988ISO 6394:1998 / ISO 6395:1988
SteeringISO 5010:1992ISO 5010:1992
Service Refill
Cooling System10.4 gal39.4 L
Engine Oil4.1 gal15.6 L
Hydraulic System - Tank16 gal60.6 L
Tandem Housing - Each16.9 gal64 L
Circle Drive Housing1.8 gal6.9 L
Front Wheel Spindle Bearing Housing0.1 gal0.4 L
Fuel Capacity90 gal340.7 L
Transmission - Differential - Final Drives13.2 gal50 L
Blade Range
Circle Centershift - Right25.8 in655.4 mm
Circle Centershift - Left25.8 in655.4 mm
Moldboard Sideshift - Right26 in660.4 mm
Moldboard Sideshift - Left20.1 in510.6 mm
Blade Tip Range - Forward40 degrees40 degrees
Blade Tip Range - Backward5 degrees5 degrees
Maximum Shoulder Reach Outside Of Tires - Right75 in1905 mm
Maximum Shoulder Reach Outside Of Tires - Left68.6 in1742.5 mm
Maximum Lift Above Ground16.8 in426.8 mm
Maximum Depth Of Cut28.3 in718.9 mm
Maximum Blade Position Angle90 degrees90 degrees
Scarifier
Rear - Scarifier Shank Holders99
Mid, V-Type - Scarifier Shank Holders1111
Front, V-Type, 5 Or 11 Tooth - Working Width47.4 in1204 mm
Front, V-Type, 5 Or 11 Tooth - Scarifying Depth, Maximum18.4 in467.4 mm
Front, V-Type, 5 Or 11 Tooth - Scarifier Shank Holders5 / 115 / 11
Front, V-Type, 5 Or 11 Tooth - Scarifier Shank Holder Spacing4.6 in116.9 mm
Mid, V-Type - Working Width46.6 in1183.7 mm
Mid, V-Type - Scarifying Depth, Maximum11.5 in292.1 mm
Mid, V-Type - Scarifier Shank Holder Spacing4.6 in116.9 mm
Rear - Working Width91 in2311.4 mm
Rear - Scarifying Depth, Maximum10.5 in266.7 mm
Rear - Scarifier Shank Holder Spacing10.5 in266.7 mm
Mid, Straight - Working Width71 in1803.4 mm
Mid, Straight - Scarifier Shank Holder Spacing4.4 in111.8 mm
Mid, Straight - Scarifier Shank Holders1717
Mid, Straight - Scarifying Depth, Maximum12.5 in317.5 mm
Tandems
Height19.8 in502 mm
Width6.8 in171.8 mm
Sidewall Thickness - Inner0.5 in12.7 mm
Sidewall Thickness - Outer0.6 in15.3 mm
Drive Chain Pitch1.8 in45.8 mm
Wheel Axle Spacing59.5 in1511.3 mm
Tandem Oscillation - Front Up15 degrees15 degrees
Tandem Oscillation - Front Down25 degrees25 degrees
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