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 120H Standard Motor Grader 

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The 120H Standard blends productivity and durabiliy to give you the best return on your investment. The Cat 3306 engine, direct-drive power shift transmission and load-sensing hydraulics are designed to work together to deliver top productivity in all applications.


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Specifications
Engine
Base Power (all gears) Net93 kW125 hp
VHP - gears 1-3 Net93 kW125 hp
VHP - gears 4-8 Net104 kW140 hp
VHP - gears 1-3 Gross101 kW136 hp
VHP - gears 4-8 Gross113 kW151 hp
Engine ModelCat 3116 TA
Displacement6.6 L403 in3
Bore105 mm4.13 in
Stroke127 mm5 in
Number of cylinders6
Derating altitude4500 m14764 ft
 
Power Train
Forward/Reverse Gears8 Fwd/ 6 Rev
TransmissionDirect drive, power shift
Brakes - ServiceAir actuated, oil-disc
Brakes - Service, surface area16744 cm22595 in2
Brakes - ParkingMultiple oil-disc unit
Brakes - SecondarySeparate circuits to right and left tandems
 
Hydraulic System
Circuit typeLoad sensing, pressure compensating
Pump typeVariable-displacement, piston pump
Pump output148 L/min39 gal/min
Maximum system pressure24150 kPa3500 psi
Standby Pressure3100 kPa450 psi
 
Operating Specifications
Top Speed - Fwd.42.6 km/h26.5 mph
Top Speed - Rev.33.7 km/h20.9 mph
Turning radius, outside front tires7.2 m23.8 ft
Steering range - left/right50°
Articulation angle - left/right20°
Fwd. 1st3.6 km/h2.3 mph
Fwd. 2nd5 km/h3.1 mph
Fwd. 3rd7.2 km/h4.5 mph
Fwd. 4th9.9 km/h6.2 mph
Fwd. 5th15.6 km/h9.7 mph
Fwd. 6th21.3 km/h13.2 mph
Fwd. 7th29.3 km/h18.2 mph
Fwd. 8th42.6 km/h26.5 mph
Rev. 1st2.9 km/h1.8 mph
Rev. 2nd5.4 km/h3.4 mph
Rev. 3rd7.8 km/h4.9 mph
Rev. 4th12.3 km/h7.7 mph
Rev. 5th23.1 km/h14.4 mph
Rev. 6th33.7 km/h20.9 mph
 
Service Refill
Fuel Capacity284 L75 gal
Cooling system40 L10.4 gal
Hydraulic system - total61 L16 gal
Hydraulic system - tank38 L9.9 gal
Engine Oil23 L6 gal
Trans./Diff./Final Drives47 L12.2 gal
Tandem housing (each)49 L12.7 gal
Front wheel spindle bearing housing.5 L.13 gal
Circle drive housing7 L1.8 gal
 
Frame
Circle - diameter1530 mm60.2 in
Circle - blade beam thickness30 mm1.2 in
Drawbar - height127 mm5 in
Front-top/bottom plate - width280 mm11 in
Front-top/bottom plate - thickness22 mm.9 in
Front-side plates - width236 mm9.3 in
Front-side plates - thickness10 mm.4 in
Front-linear weights - min134 kg/m90 lb/ft
Front-linear weights - max172 kg/m115 lb/ft
Front-section modulus - min1619 cm399 in3
Front-section modulus - max3681 cm3225 in3
Front axle - height to center608 mm23.9 in
Front axle - wheel lean, left/right18°
Front axle - total oscillation per side32°
 
Tandems
Height438 mm17.2 in
Width172 mm6.8 in
Sidewall thickness - inner14 mm.55 in
Sidewall thickness - outer16 mm.63 in
Drive chain pitch44.5 mm1.75 in
Wheel axle spacing1510 mm59.5 in
Tandem oscillation - front up15°
Tandem oscillation - front down25°
 
Moldboard
Blade width3.658 m12 ft
Moldboard - height610 mm24 in
Moldboard - thickness22 mm.87 in
Arc radius413 mm16.25 in
Throat clearance120 mm4.7 in
Cutting edge - width152 mm6 in
Cutting edge - thickness16 mm.63 in
End Bit - width152 mm6 in
End Bit - thickness16 mm.63 in
 
Blade Range
Circle centershift - right460 mm18.1 in
Circle centershift - left690 mm27.2 in
Moldboard sideshift - right660 mm26 in
Moldboard sideshift - left660 mm26 in
Blade tip range - forward40°
Blade tip range - backward
Maximum shoulder reach outside of tires - right1760 mm69.3 in
Maximum shoulder reach outside of tires - left1976 mm77.8 in
Maximum lift above ground457 mm18 in
Maximum depth of cut728 mm28.7 in
 
Ripper
Ripping depth, maximum262 mm10.3 in
Ripper shank holders5
Shank holder spacing - max533 mm21 in
Penetration force4343 kg9566 lb
Pryout force2279 kg5020 lb
Machine length increase, beam raised688 mm27.1 in
 
Scarifier
Rear: Working width2300 mm91 in
 
Weights
Gross Vehicle Weight - base11358 kg25040 lb
Gross Vehicle Weight, max12466 kg27483 lb
Gross Vehicle Wt, max - front axle3455 kg7618 lb
Gross Vehicle Wt, max - rear axle9011 kg19865 lb
Gross Vehicle Wt, base - front axle3164 kg6976 lb
Gross Vehicle Wt, base - rear axle8194 kg18064 lb
 
Dimensions
Height - top of cab3108 mm122.36 in
Height - high profile cab3333 mm131.22 in
Length - counterweight to ripper9641 mm380 in
Width - outside front tires2441 mm96.1 in
Length - front axle to mid tandem5871 mm231.14 in
Length - front tire to rear of machine8145 mm320.67 in
Length - front axle to moldboard2596 mm102.2 in
Length - between tandem axles1510 mm56.45 in
Width - outside rear tires2402 mm94.57 in
Width - tire center lines2056 mm80.94 in

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