Caterpillar 12M Motor Grader
Dimensions
Dimensions
Overall Length
27.85ft in
Width Over Tires
8.14ft in
Wheelbase
19.4ft in
Rear Ground Clearance
1.13ft in
Tandem Axle Wheelbase
4.96ft in
Front Ground Clearance
1.87ft in
Blade Base
8.24ft in
Height To Top Of Isomount Cab
10.75ft in
Length - Between Tandem Axles
59.5in
Length - Counterweight To Ripper
389.3in
Length - Front Axle To Mid Tandem
232.8in
Length - Front Axle To Moldboard
98.85in
Length - Front Tire To Rear Of Machine
334.1in
Height - Top Of Cylinders
113.7in
Height - Top Of Cab
10.75ft in
Height - Front Axle Center
22.5in
Height - Exhaust Stack
112.4in
Width - Outside Front Tires
97.7in
Width - Outside Rear Tires
97.7in
Width - Tire Center Lines
84.1in
Ground Clearance - Rear Axle
13.6in
Specifications
Ripper
Pry-Out Force
25972lb
Penetration Force
18911lb
Machine Length Increase, Beam Raised
39.2in
Engine
Number Of Cylinders
6
Net Power Gear 4-6
173hp
Engine Make
2236
Engine Model
C6.6 ACERT VHP
Frame
Front Frame Structure - Height
0.9ft in
Front Frame Structure - Width
0.9ft in
Front Frame Structure - Thickness
0.1ft in
Engine
Net Power Gear 1-2
163hp
Power Measured @
2000rpm
Net Power Gear 5-6
173hp
Max Power
173hp
Net Power Gears 7-8
173hp
Displacement
403cu in
Bore
4.2in
Stroke
5in
Engine Model
Cat C6.6 ACERT VHP
Derating Altitude
11500ft in
Maximum Torque
690lb ft
Base Power (1st Gear) - Net
158hp
Speed At Rated Power
2000 RPM
High - Ambient Capability
122degrees
High Ambient - Fan Speed - Maximum
1650 RPM
High Ambient - Fan Speed - Minimum
550 RPM
Vhp Plus Range - Net
118-144 kW (158-193 hp)
Frame
Circle - Diameter
60.2in
Drawbar - Height
6in
Front Axle - Height To Center
22.5in
Circle - Blade Beam Thickness
1.4in
Front Axle - Total Oscillation Per Side
32 degrees
Drawbar - Thickness
0.4in
Drawbar - Width
3in
Front Axle - Wheel Lean - Left/Right
18 degrees
Engine
Torque Rise - Vhp Plus
40%
Base Power (All Gears) - Net
158hp
Standard - Fan Speed - Maximum
1150 RPM
Standard - Fan Speed - Minimum
550 RPM
Standard - Ambient Capability
109degrees
Vhp Range - Net
118 -129 kW (158-173 hp)
Frame
Drawbar - Yoke Bar Thickness
0.8in
Operational
Std Operation Weight - Front Axle
8836lb
Std Operation Weight - Rear Axle
23180lb
Hydraulic System Fluid Capacity
16gal
Std Operation Weight - Total
32016lb
Max Operation Weight - Front Axle
15284lb
Max Operation Weight - Rear Axle
29406lb
Max Operation Weight - Total
44690lb
Fuel Capacity
90gal
Cooling System Fluid Capacity
10.4gal
Rear Diff/Final Drive Fluid Capacity
13.2gal
Circle Gearbox Fluid Capacity
1.8gal
Tandem Case Fluid Capacity (Each)
16.9gal
Power Train
Brakes - Parking
Multiple oil disc
Brakes - Service
Multiple oil-disc
Transmission
Direct drive, power shift, countershaft
Forward/Reverse Gears
8 Fwd / 6 Rev
Brakes - Secondary
Dual circuit control system
Brakes - Service - Surface Area
3565in2
Steering
Articulation Angle
20degrees
Turning Radius
24.5ft in
Transmission
Transmission Type
direct drive, power shift, countershaft
Number Of Gears - Forward
8
Number Of Gears - Reverse
6
Max Speed - Forward
27.7mph
Max Speed - Reverse
23.5mph
Front Axle
Wheel Lean
18degrees
Oscillation - Total
32degrees
Ground Clearance
1.9ft in
Weights
Gross Vehicle Weight - Base - Total
33064lb
Gross Vehicle Weight - Maximum - Total
44690lb
Gross Vehicle Weight - Base - Rear Axle
23145lb
Gross Vehicle Weight - Base - Front Axle
9919lb
Gross Vehicle Weight - Maximum - Front Axle
15954lb
Gross Vehicle Weight - Maximum - Rear Axle
48736lb
Hydraulic System
Standby Pressure
450 psi
Maximum System Pressure
3500 psi
Moldboard
Moldboard Width
12ft in
Moldboard Height
24in
Moldboard Thickness
0.9in
Max Depth Of Cut
28.3in
Side Shift Left
20.1in
Side Shift Right
26in
Blade Pull At Max Weight
26465lb
Blade Down Pressure
27066.2lb
Hydraulic System
Pump Type
Variable piston
Pump Flow
51gal/min
Relief Valve Pressure
3500psi
Circuit Type
Electro-hydraulic closed center, load sensing,
Pump Output
51 gal/min
Moldboard
Blade Width
12ft in
Arc Radius
16.3in
Throat Clearance
4.9in
Cutting Edge Width
6in
Cutting Edge Thickness
0.6in
End Bit - Width
6in
End Bit - Thickness
0.6in
Moldboard - Height
24in
Moldboard - Thickness
0.9in
Blade Pull - Maximum Gvw
25862lb
Blade Pull - Base Gvw
20830lb
Blade Down Pressure - Base Gvw
17566lb
Blade Down Pressure - Maximum Gvw
28254lb
Circle
Diameter
60.2in
Shift Left
25.8in
Shift Right
25.8in
Max Reach Outside Tires - Left
68.6in
Max Reach Outside Tires - Right
75in
Max Lift Above Ground
16.8in
Blade Tip Angle - Front
40degrees
Blade Tip Angle - Rear
5degrees
Operating Specifications
Top Speed - Forward
27.7mph
Top Speed - Reverse
23.5mph
Turning Radius - Outside Front Tires
24.5ft in
Steering Range - Left/Right
47.5 degrees
Articulation Angle - Left/Right
20 degrees
Forward - 8th
27.7mph
Forward - 7th
19mph
Forward - 6th
13.8mph
Forward - 5th
10.2mph
Forward - 4th
6.5mph
Forward - 3rd
4.8mph
Forward - 2nd
3.3mph
Forward - 1st
2.4mph
Reverse - 6th
23.5mph
Reverse - 5th
16.1mph
Reverse - 4th
8.6mph
Reverse - 3rd
5.6mph
Reverse - 2nd
3.8mph
Reverse - 1st
2mph
Standards
Brakes
ISO 3450:1996
Rops/Fops
ISO 3471:1992 / ISO 3449:1992
Sound
ISO 6394:1998 / ISO 6395:1988
Steering
ISO 5010:1992
Service Refill
Cooling System
10.4gal
Engine Oil
4.1gal
Hydraulic System - Tank
16gal
Tandem Housing - Each
16.9gal
Circle Drive Housing
1.8gal
Front Wheel Spindle Bearing Housing
0.1gal
Fuel Capacity
90gal
Transmission - Differential - Final Drives
13.2gal
Blade Range
Circle Centershift - Right
25.8in
Circle Centershift - Left
25.8in
Moldboard Sideshift - Right
26in
Moldboard Sideshift - Left
20.1in
Blade Tip Range - Forward
40 degrees
Blade Tip Range - Backward
5 degrees
Maximum Shoulder Reach Outside Of Tires - Right
75in
Maximum Shoulder Reach Outside Of Tires - Left
68.6in
Maximum Lift Above Ground
16.8in
Maximum Depth Of Cut
28.3in
Maximum Blade Position Angle
90 degrees
Scarifier
Rear - Scarifier Shank Holders
9
Mid, V-Type - Scarifier Shank Holders
11
Front, V-Type, 5 Or 11 Tooth - Working Width
47.4in
Front, V-Type, 5 Or 11 Tooth - Scarifying Depth, Maximum
18.4in
Front, V-Type, 5 Or 11 Tooth - Scarifier Shank Holders
5 / 11
Front, V-Type, 5 Or 11 Tooth - Scarifier Shank Holder Spacing
4.6in
Mid, V-Type - Working Width
46.6in
Mid, V-Type - Scarifying Depth, Maximum
11.5in
Mid, V-Type - Scarifier Shank Holder Spacing
4.6in
Rear - Working Width
91in
Rear - Scarifying Depth, Maximum
10.5in
Rear - Scarifier Shank Holder Spacing
10.5in
Mid, Straight - Working Width
71in
Mid, Straight - Scarifier Shank Holder Spacing
4.4in
Mid, Straight - Scarifier Shank Holders
17
Mid, Straight - Scarifying Depth, Maximum
12.5in
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 degrees
Tandem Oscillation - Front Down
25 degrees
