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Caterpillar

K-Series Motor Graders

12K vs. 12H STD

Comparative Presentation

12K2HOverview

Introduction

General Specs

Operator Environment

Structures

Transmission

Engine

Hydraulics

Integrated Electronics

Safety

Machine Dimensions

Machine Specifications

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12K2HIntroduction

K-Series Improved Features

ACERT En gines

Tier 2 Emissions

Better Fuel Efficiency

Improved Cold Starting Cat C7 (7.2L)

VHP (Standard)

Better Power Delivery

Less Tire Slip / Wear

Lower O&O Costs

39% Torque Increase

Electronic Throttle

Built-In Diagnostics

Isolation Mounting

Operator Station

Increased Ventilation

Improved Gauge Cluster

Monitoring System (ET) AccuGrade Ready

Product Link Ready

Diff Lock/Unlock

Serviceability

Ground Level Daily Check

Left Side Grouped

Cat ET

Increased Diagnostics

500 Hr Engine Oil Interval

4000 Hr HydOil Interval

12000 Hr Engine Coolant

Up to 50% Less Labor

Electronic Disconnect

Emergency Shutoff

Non-skid Tandem Steps

Transmission

Direct Drive, Power Shift

Electronic Control (ECP C)

Optimized Inching Modulation 8F/6R Gears

Autoshift (Optional)

Over-speed Protection

Speedometer / Tachometer

Built-In Diagnostics

12K2H

Cat 3306

Tier I

14 010 kg (30,886 lb)

104 kW (140 hp) Base Power (1F 3F)

123 kW (165 hp) VHP (4F 8F) Std

8F/6R

C7.2 VHP with ACERT Technology

Tier 2 Certified

15 754 kg (34,731 lb)

108 kW (145 hp) Base Power (1F 2F)

116 kW (155 hp) VHP (3F) Std

123 kW (165 hp) VHP (4F 8F) Std

8F/6R

General Specs

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12K2H

Mechanical-Linked Hydraulic

Low Effort, Lever Controls

STD Monitoring System

Hand Throttle Control

Well Ventilated Cab

Excellent Visibility

Mechanical-Linked Hydraulic

Low Effort, Lever Controls

Improved Monitoring System

Electronic Throttle Control

Improved Cab Ventilation

Excellent Visibility

Operator Environment

12K2H

Conventional Levers (6 base functions)

1. Left Blade Lift / Lower

2. Moldboard Side Shift (Optional)

3. Blade Tip (Optional)

4. Blade Circle

5. Articulation

6. Drawbar Center Shift

7. Wheel Lean

8. Right Blade Lift / Lower

Conventional Levers (8 base functions)

1. Left Blade Lift / Lower

2. Moldboard Side Shift (Standard)

3. Blade Tip (Standard)

4. Blade Circle

5. Articulation

6. Drawbar Center Shift

7. Wheel Lean

8. Right Blade Lift / Lower

Operator Environment - Controls

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12K2H

Controls

1. Steering

2. Differential Lock / Unlock (Optional)

3. Transmission Direction/ Gear Selection/Parking Brake

4. Mechanical Hand Throttle

Controls

1. Steering

2. Differential Lock / Unlock (Standard)

3. Transmission Direction/ Gear selection/Parking Brake

4. Electronic Throttle Control

Operator Environment - Controls

1

2

3

4

1

2

3 4

12K2H

Analog Gauges

Articulation

Engine Coolant Temperature

Engine Oil Pressure

Service Brake Air Pressure (Left & Right)

Voltmeter

Analog Gauges

Articulation

Engine Coolant Temperature

Engine Oil Pressure

Fuel Level

Service Brake Air Pressure (Left & Right)

Voltmeter

Speedometer/Tachometer (Optional)

Operator Environment Instrument Panel

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12K2H

Indicator Lights

Center-Shift Pin Disengaged Low Brake Air Pressure

Low Engine Oil Pressure

Parking Brake Engaged

Transmission Diagnostics

Transmission Fault

Indicator lights

Center-Shift Pin Disengaged Check Engine

Diff Lock Indicator

Hi-Beam Indicator / Turn Signals

Low Brake Air Pressure

Low Engine Oil Pressure

Parking Brake Engaged

Throttle Lock

Transmission Filter Bypass and Check

Operator Environment Instrument Panel

12K2H

Optimal Blade Positioning Capability

3-Position Link Bar (Standard)

7-Position Link Bar (Optional)

Improved Blade Positioning Capability

7-Position Link Bar (Standard)

Structures Moldboard

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12K2H

Power Shift/ Direct Drive

8 FWD/ 6 REV Gears

Integrated Parking Brake

Electronic Over-speed Protection

No Autoshift Offered

Electronically Controlled Shifts

Power Shift / Direct Drive

8 FWD/ 6 REV Gears

Integrated Parking Brake

Electronic Over-speed Protection

Autoshift Feature (Optional)

Electronically Controlled Shifts

Optimized Inching Modulation (With ECPC)

Transmission

12K2H

Cat 3306 Tier I Certified

Max Torque =648 N-m (478 lb-ft)

Altitude Deration 760 m (2,493 ft)

Std Ambient 43C (109 F)

Hi Ambient 50 C (122F) (Optional)

Cat C7 ACERT Tier 2 Certified

Max Torque =901 N-m (664 lb-ft)

Altitude Deration 3048 m (10,000 ft)

Std Ambient 50C (122 F)

Enhanced Electronically Controlled Fuel System

Maximized Fuel efficiency

39% torque increase

Engine

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12K2H

VHP Standard

VHP Increase is 19 kW (25 hp) in 4F

1F 3F =104 kW (140 hp)

4F 8F =123 kW (165 hp)

VHP Standard

VHP Delivered in 7.5 kW (10 hp) increments

1F 2F =108 kW (145 hp)

3F =116 kW (155 hp)

4F 8F =123 kW (165 hp)

Optimum Gear-to-Gear hp forImproved Productivity

Engine Power Management

12K2HEngine Power Management

123 kW (165 hp)8F123 kW (165 hp)

123 kW (165 hp)7F123 kW (165 hp)

123 kW (165 hp)6F123 kW (165 hp)

123 kW (165 hp)5F123 kW (165 hp)

123 kW (165 hp)4F123 kW (165 hp)

116 kW (155 hp)3F104 kW (140 hp)

108 kW (145 hp)2F104 kW (140 hp)

108 kW (145 hp)1F104 kW (140 hp)

VHPGearVHP

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12K2HEngine Power Management

MORE RIMPULL IN ALL GEARS

12K & 12H STD Rimpull *

0.00

5000.00

10000.00

15000.00

20000.00

25000.00

30000.00

35000.00

0.00 5.00 10.00 15.00 20.00 25.00 30.00 35.00

Ground Speed, mph

1F 12K

2F 12K

3F 12K

4F 12K

5F 12K

6F 12K

7F 12K

8F 12K

8F 12H STD

7F 12H STD

6F 12H STD

5F 12H STD

4F 12H STD

3F 12H STD

2F 12H STD

1F 12H STD

Traction Limit

* Dual power was not offered on 12H Std

Rimpull,

lbf

12K2HEngine Specifications

305 L (80.6 gal)Fuel Capacity284 L (75 gal)

108 kW (145 hp)Base Power (1st gear) - Net104 kW (140 hp)

50 C (122 F)Std Ambient Capability43C (109 F)

1450 rpmStd Ambient - Fan Speed - Max1210 rpm

3048 m (10,000 ft)Derating Altit ude4978 m (16,332 ft)

6Number of Cylinders6

2000 rpmSpeed @ Rated Power1900 rpm

901 N-m (664 lb ft)Max Torque648 N-m (478 lb ft)

50%Torque Rise30%

127 mm (5 in)Stroke152 mm (6 in)

105 mm (4.1 in)Bore121 mm (4.75 in)

7.2 L (439 in)Displacement10.45 L (638 in)

Cat C7.2 ACERT VHPModelCat 3306

Spec

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12K2H

Load Sensing Mechanical Hydraulics

Proportional Priority Pressure Compensating(PPPC) Implement Control Valves

Balanced Flow

Variable Flow Rates

Compensates for Volume Differences:Head Vs. Rod End of Cylinder

No Blade Float

Load Sensing Mechanical Hydraulics

Proportional Priority Pressure Compensating(PPPC) Implement Control Valves

Balanced Flow

Variable Flow Rates

Compensates for Volume Differences:Head Vs. Rod End of Cylinder

Blade Float With AccuGrade (Optional)

Hydraulics

12K2H

Electronic Technician (Cat ET)

Simple Diagnostics

Electronic Technician (Cat ET)

Improved Diagnostics

Product Link Option

Integrated Electronics

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12K2H

AccuGrade Attachment Ready Option

Not Available

AccuGrade Attachment Ready Option (ARO)

Blade Float With AccuGrade (Optional)

Integrated Electronics - AccuGrade

12K2H

Steel Non Skid Steps Not Available Steel Non Skid Steps Standard

Provide sturdy platform access to thetandems

Protect brake lines

Safety

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12K2H

Electrical Disconnect Switch Electrical Disconnect Switch

Tag-out lockout latch for added safety

Safety

12K2H

Engine Doors (Optional) Engine Doors (Standard)

Engine Shutoff Switch

Safety

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12K2H

Additional Safety Features

Laminated Front Glass (Cab Option Only)

Lockable Doors

Conveniently Located Grab Rails

Front Sunscreen Decal

Brake Lights

Back-up Alarm & Reverse Lights (Optional)

Turn Signals (Optional)

Additional Safety Features

Laminated Front Glass (Cab Option Only)

Lockable Doors

Conveniently Located Grab Rails

Front Sunscreen Decal

Brake Lights

Back-up Alarm & Reverse Lights (Standard)

Turn Signals (Optional)

Safety

12K2HMachine Dimensions

2464 mm (97in)Width - outside front tires2441 mm (96.1 in)

2468 mm (97.1 in)Width - outside rear tires2422 mm (95.4 in)

2065 mm (81.3 in)Width - tire center lines2077 mm (81.8 in)

3019 mm (118.9 in)Height to top of cylinders3030 mm (119.3 in)

2865 mm (112.8 in)Height to exhaust stack3090 mm (121.7 in)

332 mm (13.1 in)Ground cl earance at trans. case342 mm (13.4 in)

10 013 mm (394.2 in)Length - counterweight to ripper10 012 mm (394.2 in)

8467 mm (333.3 in)Length - front tire to end of rear frame8571 mm (337.4 in)

6086 mm (239.6 in)Length - front axle to mid tandem6086 mm (239.6 in)

2598 mm (102.3 in)Length - front axle to moldboard2575 mm (101.4 in)

1523 mm (60 in)Length - between tandem axles1523 mm (60 in)

596 mm (23.5 in)Ground clearance to center front axle594 mm (23.4 in)

3322 mm (130.7 in)Height ROPS canopy3332 mm (131.2 in)

3316 mm (130.6 in)Height non-ROPS cab3107 mm (122.3)

3322 mm (130.7 in)Height - ROPS cab3332 mm (131.2 in)

Dimensions

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12K2HMachine Specifications

7 L (1.8 gal)Circle Drive Housing7 L (1.8 gal)

0.5 L (0.1 gal)Front Wheel Spindle Bearing Housing0.5 L (0.1 gal)

64 L (16.9 gal)Tandem Housing (Each)64 L (16.9gal)

47 L (12.4 gal)Differential / Final Drives47 L (12.4 gal)

25 L (6.6 gal)Engine Oil27 L (7.1 gal)

55 L (14.5 gal)Hydraulic System - Tank38 L (10 gal)

40 L (10.6 gal)Cooling System40 L (10.6 gal)

305 L (80.6 gal)Fuel Tank284 L (75 gal)

Service Refill

3600 kPa (522.1 psi)Standby Pressure3600 kPa (522.1 psi)

25 500 kPa (3699 psi)Maximum System Pressure25 500 kPa (3699 psi)

205.8 L/min (54.4 gal/min)Pump Outp ut @ 2000 RPM*205.8 L/min (54.4 gal/min)

Variable PistonPump TypeVariable Piston

Load Sensing, Closed Center, PPPCCircuit TypeLoad Sensing, Closed Center, PPPC

Hydraulic System

Dual CircuitSecondary BrakesDual Circuit

Air actuated, multiple oil-discParking BrakeAir actuated, multiple oil-disc

23 948 cm(3712 in)Brake Surface Area23 948 cm(3712 in)

Dual Circuit Air, multiple oil-discBrakes, ServiceDual Circuit Air, multiple oil-disc

Direct Drive, Power ShiftTransmissionDirect Drive, Power Shift

8 Fwd / 6 RevForward/Reverse Gears8 Fwd / 6 Rev

Power Train

Competition

CAT, CATERPILLAR, their r espective logos,

Caterpil lar Yellow and the POWER EDGE trade

dress, as well as corporate and product identity

used herein, are trademarks of Caterpill ar and may

not be used without permission.

AEXC0749

Apr il 2009

12K vs. 12H STDComparative Presentation