Heavy Equipment
Motor Graders
| 12H Standard Motor Grader |
12H Standard Technical Data
Specifications below are provided online by Caterpillar.
| Engine | |
|---|---|
| Base Power (all gears) Net | 104 kW / 140 hp |
| Base Power (all gears) Gross | 115 kW / 154 hp |
| Engine Model | Cat 3306 NA |
| Displacement | 10.45 L / 638 in³ |
| Bore | 121 mm / 4.75 in |
| Stroke | 152 mm / 6 in |
| Speed @ rated power | 2000 rpm |
| Number of cylinders | 6 |
| Derating altitude | 760 m / 2493 ft |
| Power Train | |
|---|---|
| Forward/Reverse Gears | 8 Fwd/ 6 Rev |
| Transmission | Direct Drive, Power Shift |
| Brakes - Service | Air Actuated, Oil-Disc |
| Brakes - Service, surface area | 23948 cm² / 3712 in² |
| Brakes - Parking | Multiple Oil-Disc Unit |
| Brakes - Secondary | Separate Circuits to Right and Left Tandems |
| Hydraulic System | |
|---|---|
| Circuit type | Load Sensing, Pressure Compensating |
| Pump type | Variable-displacement, piston pump |
| Pump output | 148 L/min / 39 gal/min |
| Maximum system pressure | 24150 kPa / 3500 psi |
| Reservoir tank capacity | 38 L / 10.04 gal |
| Standby Pressure | 3100 kPa / 450 psi |
| Operating Specifications | |
|---|---|
| Top Speed - Fwd. | 41.7 km/h / 25.9 mph |
| Top Speed - Rev. | 32.9 km/h / 20.5 mph |
| Turning radius, outside front tires | 7.4 m / 24.3 ft |
| Steering range - left/right | 50° |
| Articulation angle - left/right | 20° |
| Fwd. 1st | 3.6 km/h / 2.2 mph |
| Fwd. 2nd | 4.8 km/h / 3.1 mph |
| Fwd. 3rd | 7 km/h / 4.4 mph |
| Fwd. 4th | 9.7 km/h / 6 mph |
| Fwd. 5th | 15.3 km/h / 9.5 mph |
| Fwd. 6th | 20.8 km/h / 12.9 mph |
| Fwd. 7th | 28.7 km/h / 17.9 mph |
| Fwd. 8th | 41.7 km/h / 255.9 mph |
| Rev. 1st | 2.8 km/h / 1.8 mph |
| Rev. 2nd | 5.3 km/h / 3.3 mph |
| Rev. 3rd | 7.7 km/h / 4.7 mph |
| Rev. 4th | 12.1 km/h / 7.6 mph |
| Rev. 5th | 22.7 km/h / 14.1 mph |
| Rev. 6th | 32.9 km/h / 20.5 mph |
| Service Refill | |
|---|---|
| Fuel Capacity | 284 L / 75 gal |
| Cooling system | 40 L / 10.4 gal |
| Hydraulic system - total | 73 L / 19 gal |
| Hydraulic system - tank | 38 L / 9.9 gal |
| Engine Oil | 27 L / 7 gal |
| Trans./Diff./Final Drives | 47 L / 12.2 gal |
| Tandem housing (each) | 65 L / 16.9 gal |
| Front wheel spindle bearing housing | .5 L / .13 gal |
| Circle drive housing | 7 L / 1.8 gal |
| Frame | |
|---|---|
| Circle - blade beam thickness | 30 mm / 1.2 in |
| Drawbar - height | 122 mm / 5 in |
| Front-top/bottom plate - width | 305 mm / 12 in |
| Front-top/bottom plate - thickness | 25 mm / 1 in |
| Front-side plates - width | 242 mm / 9.5 in |
| Front-side plates - thickness | 12 mm / .5 in |
| Front-linear weights - min | 165 kg/m / 112 lb/ft |
| Front-linear weights - max | 213 kg/m / 144 lb/ft |
| Front-section modulus - min | 2083 cm³ / 127 in³ |
| Front-section modulus - max | 4785 cm³ / 291 in³ |
| Front axle - height to center | 608 mm / 23.9 in |
| Front axle - wheel lean, left/right | 18° |
| Front axle - total oscillation per side | 32° |
| Tandems | |
|---|---|
| Height | 506 mm / 19.9 in |
| Width | 201 mm / 7.9 in |
| Sidewall thickness - inner | 16 mm / .63 in |
| Sidewall thickness - outer | 18 mm / .71 in |
| Drive chain pitch | 51 mm / 2 in |
| Wheel axle spacing | 1522 mm / 60 in |
| Tandem oscillation - front up | 15° |
| Tandem oscillation - front down | 25° |
| Moldboard | |
|---|---|
| Blade width | 3.658 m / 12 ft |
| Moldboard - height | 610 mm / 24 in |
| Moldboard - thickness | 22 mm / .87 in |
| Arc radius | 413 mm / 16.25 in |
| Throat clearance | 120 mm / 4.7 in |
| Cutting edge - width | 152 mm / 6 in |
| Cutting edge - thickness | 16 mm / .63 in |
| End Bit - width | 152 mm / 6 in |
| End Bit - thickness | 16 mm / .63 in |
| Blade Range | |
|---|---|
| Circle centershift - right | 540 mm / 21.3 in |
| Circle centershift - left | 700 mm / 27.6 in |
| Moldboard sideshift - right | 660 mm / 26 in |
| Moldboard sideshift - left | 660 mm / 26 in |
| Blade tip range - forward | 40° |
| Blade tip range - backward | 5° |
| Maximum shoulder reach outside of tires - right | 1809 mm / 71.2 in |
| Maximum shoulder reach outside of tires - left | 1859 mm / 73.2 in |
| Maximum lift above ground | 480 mm / 18.9 in |
| Maximum depth of cut | 735 mm / 28.9 in |
| Ripper | |
|---|---|
| Ripping depth, maximum | 462 mm / 18.2 in |
| Ripper shank holders | 5 |
| Shank holder spacing - max | 533 mm / 21 in |
| Penetration force | 8047 kg / 17740 lb |
| Pryout force | 9281 kg / 20460 lb |
| Machine length increase, beam raised | 970 mm / 38.2 in |
| Scarifier | |
|---|---|
| Rear: Working width | 2300 mm / 91 in |
| Rear: Scarifier shank holders | 9 |
| Rear: Scarifier shank holder spacing | 267 mm / 10.5 in |
| Weights | |
|---|---|
| Gross Vehicle Weight - base | 13077 kg / 28830 lb |
| Gross Vehicle Weight, max | 14185 kg / 31273 lb |
| Gross Vehicle Wt, max - front axle | 3830 kg / 8445 lb |
| Gross Vehicle Wt, max - rear axle | 10355 kg / 22828 lb |
| Gross Vehicle Wt, base - front axle | 3494 kg / 7702 lb |
| Gross Vehicle Wt, base - rear axle | 9583 kg / 21128 lb |
| Dimensions | |
|---|---|
| Height - top of cab | 3107 mm / 122.32 in |
| Height - high profile cab | 3332 mm / 131.18 in |
| Length - counterweight to ripper | 10012 mm / 394.17 in |
| Width - outside front tires | 2440 mm / 96.06 in |
| Length - front axle to mid tandem | 6086 mm / 239.61 in |
| Length - front tire to rear of machine | 8454 mm / 332.83 in |
| Length - front axle to moldboard | 2565 mm / 101 in |
| Length - between tandem axles | 1523 mm / 60 in |
| Width - outside rear tires | 2422 mm / 95.35 in |
| Width - tire center lines | 2077 mm / 81.77 in |
| Height - front axle center | 608 mm / 23.94 in |