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Caterpillar

12M

Motor Grader

Max Operation Weight - Total
44,690 lb
Max Power
173.0 hp
Net Power Gears 7-8
173.0 hp
Net Power Gear 5-6
173.0 hp
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Caterpillar 12M Motor Grader
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Specifications

189 data points

Operating Specifications

Operating Specifications specifications
Operating Weight32,016 lb
Max Operation Weight - Total44,690 lb
Max Operation Weight - Front Axle15,284 lb
Max Operation Weight - Rear Axle29,406 lb
Std Operation Weight - Total32,016 lb
Fuel Capacity90.0 gal
Std Operation Weight - Front Axle8,836 lb
Std Operation Weight - Rear Axle23,180 lb
Hydraulic System Fluid Capacity16.0 gal
Tandem Case Fluid Capacity (each)16.9 gal
Cooling System Fluid Capacity10.4 gal
Circle Gearbox Fluid Capacity1.8 gal
Rear Diff/Final Drive Fluid Capacity13.2 gal
Articulation Angle - Left/Right20 °
Forward - 1st2.4 mph
Forward - 2nd3.3 mph
Forward - 3rd4.8 mph
Forward - 4th6.5 mph
Forward - 5th10.2 mph
Forward - 6th13.8 mph
Reverse - 1st2
Reverse - 2nd3.8 mph
Reverse - 3rd5.6 mph
Steering Range - Left/Right48 °
Top Speed - Forward27.7 mph
Top Speed - Reverse23.5 mph
Turning Radius - Outside Front Tires294 in
Forward - 7th19.0 mph
Forward - 8th27.7 mph
Reverse - 4th8.6 mph
Reverse - 5th16.1 mph
Reverse - 6th23.5 mph

Engine

Engine specifications
Engine ModelCat C6.6 ACERT VHP
Displacement403 in³
Power Measured @2,000 rpm
Number of Cylinders6
Stroke5 in
Bore4 in
Max Power173.0 hp
Net Power Gears 7-8173.0 hp
Net Power Gear 5-6173.0 hp
Net Power Gear 1-2163.0 hp
Net Power Gear 4-6173.0 hp
Base Power (1st Gear) - Net158.0 hp
Derating Altitude138,000 in
Maximum Torque690 lb-ft
High - Ambient Capability122 °
V Plus Range - Net158.2 – 193.1 hp
Base Power (All Gears) - Net158.0 hp
Standard - Ambient Capability109 °
V Range - Net158.2 – 173.0 hp
Torque Rise - V Plus40.0 %

Weights

Weights specifications
Gross Vehicle Weight - Maximum - Front Axle15,954 lb
Gross Vehicle Weight - Maximum - Rear Axle48,736 lb
Gross Vehicle Weight - Maximum - Total44,690 lb
Gross Vehicle Weight - Base - Front Axle9,919 lb
Gross Vehicle Weight - Base - Rear Axle23,145 lb
Gross Vehicle Weight - Base - Total33,064 lb

Hydraulic System

Hydraulic System specifications
Pump Flow51.0 gal/min
Pump TypeVariable piston
Relief Valve Pressure3,500 psi
Maximum system pressure3,500 psi
Circuit TypeElectro-hydraulic closed center load sensing
Pump Output51.0 gal/min
Standby Pressure450 psi

Dimensions

Dimensions specifications
Height - Top of Cab130 in
Wheelbase233 in
Overall Length335 in
Width Over Tires98 in
Height to Top of Isomount Cab130 in
Blade Base100 in
Tandem Axle Wheelbase60 in
Front Ground Clearance23 in
Rear Ground Clearance15 in
Width - Outside Rear Tires98 in
Height - Exhaust Stack112 in
Length - Front Axle to Mid Tandem233 in
Width - Outside Front Tires98 in
Length - Front Axle to Moldboard99 in
Length - Between Tandem Axles60 in
Height - Top of Cylinders114 in
Height - Front Axle Center23 in
Width - Tire Center Lines84 in
Ground Clearance - Rear Axle14 in
Length - Front Tire to Rear of Machine334 in
Length - Counterweight to Ripper389 in

Transmission

Transmission specifications
Max Speed - Forward27.7 mph
Max Speed - Reverse23.5 mph
Number of Gears - Forward8
Number of Gears - Reverse6
Transmission Typedirect drive power shift countershaft

Moldboard

Moldboard specifications
Moldboard Height24 in
Moldboard Width144 in
Moldboard Thickness1 in
Side Shift Left20 in
Side Shift Right26 in
Max Depth of Cut28 in
Blade Pull at Max Weight26,465 lb
Blade Down Pressure27,066 lb
Moldboard Length144 in
Arc Radius16 in
Blade Width144 in
Cutting Edge Thickness1 in
Cutting Edge Width6 in
End Bit - Thickness1 in
End Bit - Width6 in
Throat Clearance5 in
Blade Pull - Maximum GVW25,862 lb
Blade Down Pressure - Base GVW17,566 lb
Blade Down Pressure - Maximum GVW28,254 lb
Blade Pull - Base GVW20,830 lb

Blades

Blades specifications
Maximum Shoulder Reach Outside of Tires - Left69 in
Maximum Shoulder Reach Outside of Tires - Right75 in
Moldboard Sideshift - Left20 in
Moldboard Sideshift - Right26 in
Maximum Lift Above Ground17 in
Blade Tip Range - Backward5 °
Blade Tip Range - Forward40 °
Circle Centershift - Left26 in
Circle Centershift - Right26 in
Maximum Blade Position Angle90 °
Maximum Depth of Cut28 in

Standards

Standards specifications
BrakesISO 3450:1996
ROPS/FOPSISO 3471:1992 / ISO 3449:1992
SoundISO 6394:1998 / ISO 6395:1988
SteeringISO 5010:1992

Circle

Circle specifications
Max Lift Above Ground17 in
Max Reach Outside Tires - Left69 in
Max Reach Outside Tires - Right75 in
Diameter60 in
Blade Tip Angle - Front40 °
Blade Tip Angle - Rear5 °
Shift Left26 in
Shift Right26 in

Front Axle

Front Axle specifications
Wheel Lean18 °
Oscillation - Total32 °
Ground Clearance23 in

Steering System

Steering System specifications
Turning Radius294 in
Articulation Angle20 °

Power Train

Power Train specifications
Brakes - ParkingMultiple oil disc
Brakes - SecondaryDual circuit control system
Brakes - ServiceMultiple oil-disc
Brakes - Service - Surface Area3,565 in³
Forward/Reverse Gears8 Fwd / 6 Rev
TransmissionDirect drive power shift countershaft

Service Refill

Service Refill specifications
Cooling System10.4 gal
Circle Drive Housing1.8 gal
Engine Oil4.1 gal
Front Wheel Spindle Bearing Housing0.1 gal
Fuel Capacity90.0 gal
Hydraulic System - Tank16.0 gal
Tandem Housing - Each16.9 gal
Transmission - Differential - Final Drives13.2 gal

Ripper

Ripper specifications
Penetration Force18,911 lb
Pry-Out Force25,972 lb
Machine Length Increase, Beam Raised39 in

Frame

Frame specifications
Front Frame Structure - Height11 in
Front Frame Structure - Width11 in
Circle - Blade Beam Thickness1 in
Circle - Diameter60 in
Drawbar - Height6 in
Front Axle - Height to Center23 in
Front Axle - Total Oscillation per Side32 °
Front Axle - Wheel Lean - Left/Right18 °
Drawbar - Width3 in
Drawbar - Thickness0 in

Tandems

Tandems specifications
Drive Chain Pitch2 in
Height20 in
Sidewall Thickness - Inner1 in
Sidewall Thickness - Outer1 in
Tandem Oscillation - Front Down25 °
Tandem Oscillation - Front Up15 °
Wheel Axle Spacing60 in
Width7 in

Scarifier

Scarifier specifications
Front, V-Type, 5 or 11 Tooth - Scarifier Shank Holder Spacing5 in
Front, V-Type, 5 or 11 Tooth - Scarifying Depth, Maximum18 in
Front, V-Type, 5 or 11 Tooth - Working Width47 in
Mid, V-Type - Scarifier Shank Holder Spacing5 in
Mid, V-Type - Scarifier Shank Holders11
Mid, V-Type - Scarifying Depth, Maximum12 in
Mid, V-Type - Working Width47 in
Rear - Scarifier Shank Holder Spacing11 in
Rear - Scarifier Shank Holders9
Rear - Scarifying Depth, Maximum11 in
Rear - Working Width91 in
Mid, Straight - Scarifier Shank Holder Spacing4 in
Mid, Straight - Scarifier Shank Holders17
Mid, Straight - Scarifying Depth, Maximum13 in
Mid, Straight - Working Width71 in

Comparable machines

Other motor graders in a similar weight class.