Overview
The 120K optimizes your investment by delivering maximum productivity and durability. The Cat C7 engine, direct-drive power shift transmission and load-sensing hydraulics work together to ensure the power and precision to get the job done.
Specifications
| Base Power (1st Gear) - Net | — |
| Blade Width | — |
| Engine Model | Cat® C7 ACERT™ |
Benefits & Features
Specifications
| Base Power (1st Gear) - Net | — |
| Engine Model | Cat® C7 ACERT™ |
| VHP - Gears 1-2, Net | — |
| VHP - Gear 3, Net | — |
| VHP - Gears 4-8, Net | — |
| VHP - Gears 1-2, Gross | — |
| VHP - Gear 3, Gross | — |
| VHP - Gears 4-8, Gross | — |
| Displacement | — |
| Bore | — |
| Stroke | — |
| Speed at Rated Power | — |
| Number of Cylinders | 6 |
| Derating Altitude | — |
| High Ambient - Fan Speed - Maximum | — |
| High - Ambient Capability | — |
| VHP Range - Net | 93-108 kW (125-145 hp) |
| Base Power (All Gears) - Net | — |
| Torque Rise | — |
| Maximum Torque | — |
| Forward/Reverse Gears | 8 fwd / 6 rev |
| Transmission | Direct drive, Powershift |
| Brakes - Service | Air actuated, multiple oil-disc |
| Brakes - Service - Surface Area | — |
| Brakes - Parking | Air actuated, multiple oil-disc |
| Brakes - Secondary | Dual Circuit |
| Top Speed - Forward | — |
| Top Speed - Reverse | — |
| Turning Radius - Outside Front Tires | — |
| Steering Range - Left/Right | — |
| Articulation Angle - Left/Right | — |
| Forward - 1st | — |
| Forward - 2nd | — |
| Forward - 3rd | — |
| Forward - 4th | — |
| Forward - 5th | — |
| Forward - 6th | — |
| Forward - 7th | — |
| Forward - 8th | — |
| Reverse - 1st | — |
| Reverse - 2nd | — |
| Reverse - 3rd | — |
| Reverse - 4th | — |
| Reverse - 5th | — |
| Reverse - 6th | — |
| Circuit Type | Load Sensing, Closed Center, PPPC |
| Pump Type | Variable Piston |
| Pump Output | — |
| Maximum System Pressure | — |
| Standby Pressure | — |
| Blade Width | — |
| Moldboard - Height | — |
| Moldboard - Thickness | — |
| Arc Radius | — |
| Throat Clearance | — |
| Cutting Edge Width | — |
| Cutting Edge Thickness | — |
| End Bit - Width | — |
| End Bit - Thickness | — |
| Blade Pull - Typical GVW | — |
| Blade Pull - Maximum GVW | — |
| Down Pressure - Typical GVW | — |
| Circle Centershift - Right | — |
| Circle Centershift - Left | — |
| Moldboard Sideshift - Right | — |
| Moldboard Sideshift - Left | — |
| Maximum Blade Position Angle | — |
| Blade Tip Range - Forward | — |
| Blade Tip Range - Backward | — |
| Maximum Shoulder Reach Outside of Tires - Right | — |
| Maximum Shoulder Reach Outside of Tires - Left | — |
| Maximum Lift Above Ground | — |
| Maximum Digging Depth | — |
| Ripping Depth - Maximum | — |
| Ripper Shank Holders, Quantity | 5 |
| Penetration Force | — |
| Pry-Out Force | — |
| Machine Length Increase, Beam Raised | — |
| Mid, V-Type - Scarifying Depth, Maximum | — |
| Mid, V-Type - Scarifier Shank Holders Quantity | 11 |
| Circle - Diameter | — |
| Circle - Blade Beam Thickness | — |
| Drawbar - Height | — |
| Drawbar - Width | — |
| Front Axle - Height to Center | — |
| Front Axle - Wheel Lean - Left/Right | — |
| Front Axle - Total Oscillation per Side | — |
| Height | — |
| Width | — |
| Sidewall Thickness - Inner | — |
| Sidewall Thickness - Outer | — |
| Drive Chain Pitch | — |
| Wheel Axle Spacing | — |
| Tandem Oscillation - Front Up | — |
| Tandem Oscillation - Front Down | — |
| Fuel Capacity | — |
| Cooling System | — |
| Engine Oil | — |
| Transmission - Differential - Final Drives | — |
| Tandem Housing - Each | — |
| Front Wheel Spindle Bearing Housing | — |
| Circle Drive Housing | — |
| Gross Vehicle Weight - Base - Total | — |
| Gross Vehicle Weight - Typically Equipped - Total | — |
| Gross Vehicle Weight - Typically Equipped - Rear Axle | — |
| Gross Vehicle Weight - Base - Front Axle | — |
| Gross Vehicle Weight - Base - Rear Axle | — |
| Gross Vehicle Weight - Maximum | — |
| Gross Vehicle Weight - Maximum - Front Axle | — |
| Gross Vehicle Weight - Maximum - Rear Axle | — |
| Height - ROPS Cab | — |
| Height - Non-ROPS Cab | — |
| Height - ROPS/Canopy | — |
| Ground Clearance - Center Front Axle | — |
| Length - Between Tandem Axles | — |
| Length - Front Axle to Moldboard | — |
| Length - Front Axle to Mid Tandem | — |
| Length - Front Tire to Rear of Machine | — |
| Length - Counterweight to Ripper | — |
| Ground Clearance - Trans. Case | — |
| Height - Top of Cylinders | — |
| Height - Exhaust Stack | — |
| Width - Tire Center Lines | — |
| Width - Outside Rear Tires | — |
| Width - Outside Front Tires | — |
| ROPS/FOPS | ISO 3471:1994/ISO 3449:1992 |
| Steering | ISO 5010:1992 |
| Brakes | ISO 3450:1996 |
Benefits & Features
Power Train
Power Shift Transmission
Provides on-the-go, full-power shifting and inching capability. Direct drive delivers superior fuel efficiency and better "feel" of blade loads, material hardness and ground speed.
Optional Autoshift - Automatic Gear Shifts
This feature automatically shifts the transmission at optimal points (in gears 3-8) so the operator can focus on the work, improving safety, productivity and ease of operation.
Oil Disk Brakes - Completely Sealed, Adjustment Free
Oil-bathed, air actuated and spring-released, located at each tandem wheel to eliminate power train braking loads and to reduce servicing time. The large brake surface area provides dependable braking capability and extended life before rebuild.
Front Axle with Cat Live Spindle Design
Caterpillar sealed spindle keeps the bearings free from contaminants and lubricated in a lightweight oil to reduce owning and operating costs. Two tapered roller bearings support the wheel spindle. The larger tapered roller bearing is outboard where the load is greater, extending bearing life.
Cat® C7 Engine
Power Management
The Cat C7 engine uses ACERT™ Technology to provide electronic control, precision fuel delivery and refined air management, resulting in outstanding performance and lower emissions. Variable Horse Power (VHP) is standard: base power in gears 1 and 2, 7.5 kW (10 hp) increase in gear 3, and an additional 7.5 kW (10 hp) increase in gears 4 through 8. Customized torque curves increase peak torque for improved lugging performance and responsiveness. The Electronic Throttle Control (ETC) provides easier, more precise and consistent throttle operation.
Hydraulics
Balanced Flow, Independent Oil Supply
Hydraulic flow is proportioned to ensure all implements operate simultaneously. Independent oil supply prevents cross-contamination and provides proper oil cooling, which means less heat build-up and extended component life.
Implement Control Valves
Provide outstanding operator "feel" and predictable system response for unmatched implement control. To help maintain exact blade settings, lock valves are built into all control valves. Line relief valves are also incorporated into selected control valves to protect the cylinders from over-pressurization.
Load-Sensing Hydraulics (PPPC)
A load sensing variable displacement pump and the advanced Proportional Priority Pressure-Compensating (PPPC, or "triple-PC") hydraulic valves provide superior implement control and better machine performance. PPPC valves have different flow rates for the head and rod ends of the cylinder. Continuously matching hydraulic flow and pressure to power demands creates less heat and reduces power consumption.
Consistent and Predictable Movement
The hydraulic system uses valves that provide PPPC control for precise implement and machine operation. These valves contain spools that are specifically cut for each hydraulic function on the motor grader. They compensate for differences in flow requirements, based on cylinder size and the difference in surface volume between the rod end (blue) and barrel end (red) of the cylinder. The result is predictable, consistent hydraulic speeds whether extending or retracting the cylinder.
Structures, DCM
Frame Structure - Provides Consistency and Strength
Front frame is a continuous top and bottom plate construction. Flanged box section design removes welds from high stress areas, improving reliability and durability. The rear frame structure has two box section channels with fully welded differential case for a solid working platform. An integrated bumper ties the rear frame together into a cohesive unit to handle high stress loads.
Drawbar, Circle and Moldboard (DCM)
The Y-frame drawbar is constructed of two solid beams for strength, durability, and precise blading control. This design allows the addition of a mid-mount scarifier without compromising blade positioning in extreme reach positions. The circle stands up to high stress loads. Raised wear surfaces prevent circle teeth wear against the drawbar. The 64 uniformly spaced circle teeth are flame cut and heat induction hardened to resist wear, and the circle is secured to the drawbar by four support shoes for maximum support. The moldboard provides optimal curvature and large throat clearance that helps move all soil types quickly and efficiently. These features deliver excellent load distribution and minimal material buildup in the circle area while allowing large blade loads to roll freely.
Blade Lift Accumulators
This optional feature uses accumulators to help absorb impact loads to the moldboard by allowing vertical blade travel. Blade lift accumulators reduce unnecessary wear and help to avoid unintended machine movement for increased operator safety.
Work Tools and Attachments
Moldboard Options
Standard moldboard length is 3.7 m (12 ft), with an optional 4.3 m (14 ft) moldboard available from the factory. Left and right side moldboard extensions (available through the Cat parts system) will increase moldboard surface area and extend reach capability.
Ground Engaging Tools (GET)
A wide variety of Cat GET is available from Cat parts system, including cutting edges, and end bits, all designed for maximum service life and productivity.
Rear Ripper / Scarifier
The 120K optional ripper/scarifier is made to penetrate tough material fast and rip thoroughly for easier material movement with the moldboard. The ripper includes three shanks with the ability to add two more if needed. Nine scarifier shanks can also be added for additional versatility.
Front Mounted Groups
A front mounted push plate/ counterweight or front blade can be ordered.
Mid-Mount Scarifier
Positioned between the front axle and the circle to break up tough material that the blade can then move, all in a single pass. The V-type scarifier can accommodate up to 11 teeth.
Snow Removal Work Tools
Includes snow wings, angle blades, and V-plows. Multiple mounting options are available, increasing machine versatility. (Availability may differ by region.)
Operator's Station
Designed to keep operators comfortable, relaxed and productive throughout the long work shift.
- The 120K features:
- Electronic Clutch Pressure Control (ECPC) optimizes inching modulation and smoothes shifting
- Low efforts on all pedals, hydraulic controls and the transmission shifter
- Rocker switches and transmission shifter are backlit for night time operation
- The operator can adjust implement controls and steering wheel angle independently
- Clear view to the moldboard heel and tandem tires
- Fresh air filters above each cab door for quick replacement
In-dash Instrument Cluster
The instrument panel, with easy-to read, high-visibility gauges and warning lamps, keeps the operator aware of critical system information. The dash cluster panel provides enhanced machine information and diagnostic capability. It includes an engine coolant temperature gauge, an articulation gauge, voltage gauge, and fuel level gauge. Service brake air pressure gauges are also standard. Speedometer and tachometer are optional. All major systems are monitored by warning lights.
Additional Cab Features
Additional cab features include storage area, an adjustable control console, and a coat hook. The following optional features are also available: power port, air conditioner/heater, suspension seat, defroster fan, sun shade, backup lights, Product Link ready, and AccuGrade™ System Ready. NOTE: Some attachments are not available in all regions
Electronic Solutions
AccuGrade™ Grade Control System
The Cat AccuGrade System automatically controls the blade, improving operator efficiency and productivity. AccuGrade technology reduces the need for traditional survey stakes or grade checkers, so you can reach grade faster and in fewer passes than ever before. The Cat AccuGrade System includes Cross Slope, Sonic, Laser, GPS or ATS electronic kits that are available in the AccuGrade price list. The factory installed AccuGrade Attachment Ready Option provides additional mounting brackets, cab controls and electrical harnesses for easy installation of the AccuGrade Systems.
Product Link
Streamlines diagnostic efforts, and reduces downtime, maintenance scheduling and costs by providing a communication flow of vital machine data and location. Product Link gives automatic updates on machine parameters such as machine hours, machine condition, location, fault codes and alarms directly to your office computer.
Cat ET (Electronic Technician)
Cat ET is a two-way communication tool that gives service technicians easy access to stored diagnostic data, reducing machine downtime and lowering operating costs.
Safety
ROPS/FOPS Cab offers Low Sound and Vibration Levels
The operator sound pressure level for the cab offered by Caterpillar, when properly installed, maintained and tested with the doors closed, meets or exceeds requirements set forth in ISO 6394:1998. The quiet environment improves operator working conditions. Steel non-skid steps use raised perforations to provide sturdy access to the tandems.
Brake Systems and Machine Protection
Brakes located at each tandem wheel offer the largest total brake surface area in the industry, delivering dependable stopping power and longer brake life. Standard circle drive slip clutch protects the drawbar, circle and moldboard from shock loads when the blade encounters an immovable object. Blade lift accumulators help absorb impact loads to the moldboard by allowing vertical blade travel.
Electrical Disconnect Switch and Engine Shutoff Switch
Disconnect switch provides ground-level lockout of the electrical system to prevent inadvertent machine starts. Engine shutoff allows anyone nearby to shut the machine down in case of an emergency.
Additional Safety Features
Laminated glass on the front windows and lockable doors to reduce theft and vandalism are available with the optional cab. Brake lights, conveniently located grab rails, back up lights and alarm also help ensure a safe work environment.
Complete Customer Support
Your Cat dealer is ready to assist you with your purchase decision and everything after.
- Your Cat dealer can help you make detailed comparisons of the machines you're considering. How long do components last? What is the cost of preventive maintenance? What is the true cost of lost production
- Look past initial price. Consider the financing options available as well as day-to-day operating costs. Many dealers offer services that can be included in the cost of the machine to yield lower equipment owning and operating costs over the long run
- Smart equipment buyers plan for effective maintenance before buying equipment. Ask your Cat dealer about maintenance services before you make your purchase. Repair option programs guarantee the cost of repairs up front. Diagnostic programs such as Scheduled Oil Sampling and Technical Analysis help avoid unscheduled repairs
- You will find nearly all parts at our dealer parts counter. In the rare case when we don't have a part in stock, our dealer network will find it and get it to you fast
- Improving operating techniques can boost customer profits. Ask your Cat dealer about training videos, literature and other ideas to help you increase productivity. Caterpillar offers certified operator training classes to help you maximize the return on your machine investment
- Your Cat dealer can evaluate the cost to repair, rebuild and replace your machine, so you can make the right choice
- For more information on Cat products, dealer services and industry solutions, visit us at www.cat.com.
Serviceability
Grouped Service Points on the left side to help ensure proper maintenance
Easy access to service areas speeds up maintenance and ensures that routine service is performed on time. Ecology drains shorten service times and help prevent spills. Radiator cleanout access gives the operator the ability to clear away debris and other materials that build up around the radiator. Fuel water separator is easily accessible from the ground.
Extended Service Intervals Reduce Downtime, Operating Cost
- 500 hour engine oil changes
- 4,000 hour hydraulic oil changes
- 12,000 hour engine coolant changes
Diagnostics and Machine Monitoring via Electronic Technician
The dash cluster panel provides enhanced machine information and diagnostic capability, which allows faster servicing of the transmission and engine. Cat ET is a two-way communication tool that gives service technicians easy access to stored diagnostic data and lets them configure the machine parameters through the Cat Data Link.
O-Ring Face Seals
O-Ring face seals create a reliable connection and are used in all hydraulic circuits to minimize the possibility of oil leaks.
Separate Wiring Harnesses
This modular harness design provides simple disconnects for major machine repairs or rebuilds.
Data not available.
Standard Equipment
- ELECTRICAL
- Alternator, 95 ampere, sealed
- Backup alarm, reversing lights
- Batteries, maintenance free 750 CCA
- Electrical system, 24 volt
- Horn, electric
- Lights, stop and tail
- Motor, starting
- Product Link Ready
- Working lights
- OPERATOR ENVIRONMENT
- Accelerator
- Control console, adjustable
- Gauge cluster (includes voltmeter, articulation, engine coolant temperature, air brake pressure and fuel level)
- Guard rails, operator station
- Hydraulic controls, load sensing (right/left blade lift, circle drive, centershift, sideshift, front wheel lean and articulation)
- Indicator lights (includes high beam, LH and RH turn, low engine oil pressure, throttle lock, check engine, transmission filter bypass and check, centershift pin, brake air pressure, parking brake engaged, AccuGrade, auto shift)
- Key start/stop switch
- Meter, hour
- Power steering, hydraulic
- Seat, vinyl-covered static
- Seat belt
- Steering wheel, tilt, adjustable
- Storage area, cooler/lunch box
- Throttle, electronic control
- POWER TRAIN
- Air cleaner, dry type radial seal with service indicator and automatic dust ejector
- Air to air after cooler (ATAAC)
- Blower fan
- Brakes, oil disc, four-wheel air actuated
- Differential with lock/unlock
- Engine, Cat C7 with ACERT technology, diesel with automatic engine derate and idle control. Meets U.S. EPA Tier 2 and EU Stage II emission standards.
- Fuel water separator
- Muffler, under hood
- Parking brake, multi-disc, sealed and oil cooled
- Prescreener
- Priming pump, fuel, resiliently mounted
- Sediment drain, fuel tank
- Tandem drive
- Transmission, 8 speed forward and 6 speed reverse, power shift, direct drive with electronic shift control and overspeed protection
- VHP (Variable Horse Power)
- OTHER STANDARD EQUIPMENT
- Bumper, rear
- CD ROM Parts Book
- Circle drive slip clutch
- Cutting edges, 152 mm x 16 mm (6 in x 5/8 in) curved DH-2 steel
- Doors, Engine compartment
- Drawbar, 4 shoe with replaceable nylon composite wear strips
- Endbits, 16 mm (5/8 in) DH-2 steel
- Frame, articulated with safety lock
- Fuel tank, 305 L (80.6 gal)
- Ground level engine shutdown
- Link bar, 7 position
- Moldboard, 3658 mm x 610 mm x 22 mm (12 ft x 24 in x 7/8 in) blade with hydraulic sideshift and mechanical tip
- S·O·S ports, engine, hydraulic, transmission and cooling
- Toolbox with padlock
- Vandalism protection - including cap locks for hydraulic tank, radiator access cover, fuel tank, engine and transmission oil check/fill and lockable battery boxes.
- TIRES, RIMS, and WHEELS
- A partial allowance for tires on 229 mm (9 in) single piece rims is included in the base machine price and weight. A tire MUST be selected from the Mandatory Attachments section.
- ANTIFREEZE
- Extended Life Coolant to -35°C (-30°F)
Optional Equipment
- GUARDS
- Guard, transmission
- OPERATOR ENVIRONMENT
- Air conditioner with heater
- Heater, cab
- CAB / CANOPY
- Seat, vinyl adjustable
- Seat, cloth, contour
- Fan, defroster, front window
- Fan, defroster, rear window
- Sun shade, rear
- Wiper/washer, rear
- Wipers, intermittent front
- Mirrors, dual inside
- Mirrors, outside mounted
- Power port, 12V accessory
- Radio ready entertainment
- Tachometer/Speedometer
- * Cab and Canopy weights represent changes to Typically Equipped machine weights.
- POWER TRAIN
- Autoshift
- Non-Locking Differential
- OTHER ATTACHMENTS
- AccuGrade ARO
- Dryer, air
- Product Link
- Push plate, counterweight
- Accumulator, blade lift
- Battery, extreme duty (1400 CCA)
- Ether, starting aid
- Heater, engine coolant, 220V
- HYDRAULICS
- Pump, hydraulic, high capacity
- Hydraulic arrangements with one or more additional hydraulic valves are available for rear ripper, mid-mount scarifier, dozer, snow plow and snow wing.
- BLADES, MOLDBOARDS
- Blade, 4267mm x 610mm x 22mm (14' x 24" x 7/8")
- Blade, front
- Cutting edge, 203mm x 19mm (8" x 3/4"). For use with 14' blade
- Endbits, overlay, reversible pair for 152mm x 16mm (6" x 5/8") cutting edges