The M Series Motor Grader has become the industry standard in operational efficiency and overall productivity. The 24M is designed to help you build and maintain the haul roads needed to support maximum efficiency in large mining operations. Unprecedented operator comfort and ease of service help to maximize your return on investment.

Base Power (1st Gear) - Net 533 HP
Engine Model Cat® C18 ACERT™
Base Power (All Gears) - Net 533 HP
Base Power (All Gears) - Net - Metric 540 HP
Displacement 1104.5 in³

Power Train
Forward/Reverse Gears 6 Forward/3 Reverse
Transmission Automatic, electronic power shift
Brakes - Service Oil-actuated, oil-disc
Brakes - Service - Surface Area 15733 in²
Brakes - Parking Spring applied, hydraulically released
Brakes - Secondary Oil-actuated, oil-disc

Hydraulic System
Circuit Type Electro-hydraulic load sensing, closed center
Pump Type Variable piston
Pump Output 145 gal/min
Maximum System Pressure 3500 psi
Standby Pressure 450 psi

Operating Specifications
Top Speed - Forward 27 mile/h
Top Speed - Reverse 25.8 mile/h
Turning Radius - Outside Front Tires 40.68 ft
Steering Range - Left/Right 47.5°
Articulation Angle - Left/Right 25°
Forward - 1F 2.3 mile/h
Forward - 2F 3.6 mile/h
Forward - 3F 6 mile/h
Forward - 4F 9.4 mile/h
Forward - 5F 17.4 mile/h
Forward - 6F 27 mile/h
Reverse - 1R 3.4 mile/h
Reverse - 2R 9 mile/h
Reverse - 3R 25.8 mile/h

Service Refill
Fuel Capacity 350 gal (US)
Cooling System 24 gal (US)
Hydraulic System - Total 70 gal (US)
Hydraulic System - Tank 36 gal (US)
Circle Drive Housing - Each 2 gal (US)
Differential - Final Drives 49 gal (US)
Transmission Oil 23 gal (US)
Engine Oil 16 gal (US)
Tandem Housing - Each 85 gal (US)
Front Wheel Spindle Bearing Housing 1 gal (US)

Drawbar - Width 8.9 in
Circle - Diameter 103.6 in
Circle - Blade Beam Thickness 6.3 in
Drawbar - Height 8.5 in
Height - Front Axle Center 33.8 in
Drawbar - Thickness 0.6 in
Front-Top/Bottom Plate - Width 20.2 in
Front-Top/Bottom Plate - Thickness 2 in
Front-Side Plates - Width 16.3 in
Front-Side Plates - Thickness 1 in
Front Axle - Height to Center 32.2 in
Front Axle - Wheel Lean - Left/Right 18°
Front Axle - Total Oscillation per Side 32°

Height 41 in
Width 13.9 in
Sidewall Thickness - Inner 1 in
Sidewall Thickness - Outer 1.2 in
Drive Chain Pitch 3 in
Wheel Axle Spacing 90 in
Tandem Oscillation - Front Up 20°
Tandem Oscillation - Front Down 20°

Blade Width 24 ft
Arc Radius 21.7 in
Throat Clearance 6.4 in
Cutting Edge Width 13 in
Cutting Edge Thickness 1.1 in
End Bit - Width 8 in
End Bit - Thickness 1 in
Blade Pull - Base 86500 lb
Blade Pull - Maximum 95940 lb
Down Pressure - Base 69583 lb
Down Pressure - Maximum 75654 lb
Height 40 in
Thickness 2 in
Width 24 ft

Blade Range
Circle Centershift - Right 210.2 in
Circle Centershift - Left 209.9 in
Moldboard Sideshift - Right 193 in
Moldboard Sideshift - Left 178.3 in
Maximum Blade Position Angle 35°
Blade Tip Range - Forward 40°
Blade Tip Range - Backward
Maximum Lift Above Ground 25 in
Maximum Depth of Cut 25.9 in
Maximum Shoulder Reach Outside of Tires - Left 126.9 in
Maximum Shoulder Reach Outside of Tires - Right 127.1 in

Ripping Depth - Maximum 17.9 in
Ripper Shank Holders 7
Shank Holder Spacing - Minimum 23.4 in
Shank Holder Spacing - Maximum 23.8 in
Penetration Force 29985 lb
Pry-Out Force 41052 lb

Operating Weight - Typically Equipped 145151 lb
Gross Vehicle Weight - Typically Equipped 145151 lb
Gross Vehicle Weight - Maximum - Rear Axle 107001 lb
Gross Vehicle Weight - Base - Front Axle 42177 lb
Gross Vehicle Weight - Base - Rear Axle 96110 lb
Gross Vehicle Weight - Maximum - Total 152857 lb
Gross Vehicle Weight - Base - Total 138287 lb
Gross Vehicle Weight - Maximum - Front Axle 45856 lb
Gross Vehicle Weight - Typically Equipped - Front Axle 43100 lb
Gross Vehicle Weight - Typically Equipped - Rear Axle 102051 lb
Gross Vehicle Weight - Typically Equipped - Total 145151 lb

Brakes ISO 3450
Sound ISO 6394/ISO 6395
Steering ISO 5010

Engine - U.S. EPA Tier 4 Interim Certified
Base Power (All Gears) - Net 533 HP
Base Power (All Gears) - Net - Metric 540 HP
Bore 5.7 in
Derating Altitude 9655 ft
Displacement 1104.5 in³
Engine Model Cat® C18 ACERT™
Maximum Torque - Net 2001 lb/ft
Number of Cylinders 6
Speed at Rated Power 1800 r/min
Standard - Ambient Capability 122 °F
Standard - Fan Speed - Maximum 1325 r/min
Standard - Fan Speed - Minimum 60 r/min
Stroke 7.2 in

Engine - Tier 2
Base Power (All Gears) - Net 533 HP
Base Power (All Gears) - Net - Metric 540 HP
Bore 5.7 in
Derating Altitude 10000 ft
Displacement 1104.5 in³
Engine Model Cat C18 ACERT
Maximum Torque - Net 2001 lb/ft
Number of Cylinders 6
Speed at Rated Power 1800 r/min
Standard - Ambient Capability 122 °F
Standard - Fan Speed - Maximum 1325 r/min
Standard - Fan Speed - Minimum 60 r/min
Stroke 7.2 in
Torque Rise - Net 30 %

Operator Station

Good visibility is key to your safety and efficiency. Large windows make it easy to see the moldboard and tires, as well as behind the machine. The front frame, lift arms and rear enclosure are coated with glare reducing paint to help you operate more safely at night. Available front and rear facing cameras further enhance lines of sight all around the machine.

Comfort and Control
Experience the most spacious, comfortable cab in the industry. Revolutionary joystick controls replace levers, so hand and arm movement is reduced by 78%, leaving operators much less fatigued at the end of the day. Rocker switches and control levers are in easy reach. A standard Cat Comfort Series suspension seat and arm/wrist rests are fully adjustable for even more comfort and productivity. Multiple isolation mounts significantly reduce sound and vibration for a more relaxed work environment. The high capacity Heating, Ventilation and Air Conditioning (HVAC) system dehumidifies and pressurizes the cab, circulates fresh air, seals out dust and keeps windows clear. Available Bluetooth technology enables streaming audio from a portable device and hands-free use of a mobile phone while operating machine.

In-Dash Instrument Cluster
Easy-to-read, high-visibility gauges and warning lamps keep you aware of critical system information. Cat Messenger offers real-time machine performance and diagnostic data to help you get the most from your machine.

Steering and Implement Controls

Operators are more comfortable and productive with two electro-hydraulic joysticks. New and experienced operators around the world report that the controls are easy to learn, and that the electronically adjustable control pods help position them for optimal comfort, visibility and proper operation.

Joystick Functions
The left joystick controls steering, articulation, return-to-center, wheel lean, gear selection, left moldboard lift cylinder and float. The right joystick controls drawbar, circle and moldboard functions as well as electronic throttle control and manual differential lock/unlock. Joystick lean angle mirrors the steer tires' turning angle. A brake tensioning system holds the joystick in position until the operator moves it. The steering control automatically reduces steering sensitivity at higher ground speeds for predictable control. Infinitely variable roller switches control of the rear ripper and/or front lift group (when equipped).

Joystick Functions

Electronic Throttle Control
Provides easy, precise and consistent throttle operation. An automatic/manual mode switch offers flexibility for different applications and operator preferences.

Articulation Return-to-Center
Automatically returns the machine to a straight frame position from any angle with the touch of a button.


The Cat C18 engine with ACERT Technology gives you the performance you need to maintain consistent grading speeds for maximum productivity. Superior torque and lugging capability provide the power to pull through sudden, short-term increases in loads. ACERT Technology lowers combustion chamber temperatures and optimizes fuel combustion to generate more work output for your fuel cost. ACERT engines also generate fewer emissions to meet the needs of operations around the world. With engine speed limited to 1950 rpm, cylinder velocities are lowered to help you reduce fuel consumption by up to 5%.* The altitude rating is increased, and the rest of the power train has been updated to maintain the same ground speed and power. *Actual fuel savings may vary based on specific site operations and emission level.

Hydraulic Demand Fan
The hydraulic demand fan automatically adjusts the cooling fan speed according to engine cooling requirements. When cooling demand is reduced, you benefit from more power to the ground and improved fuel efficiency.

Compression Brake
The standard three-phase compression brake enables higher travel speeds downhill, while reducing wear on brake components. This improves overall productivity and lowers your maintenance costs.

Ether Starting Aid
A standard ether starting aid feature helps cold-weather startups in extreme temperatures.

Power Train

We designed the 24M to give you efficiency and longevity in your most demanding applications.
  • Full Electronic Clutch Pressure Control (ECPC) system optimizes inching modulation for smooth shifts and directional changes, reducing stress on gears.
  • Standard Programmable Autoshift simplifies operation by allowing the operator to program the transmission to shift at optimal points to match your application.
  • Lockup Clutch Torque Converter permits the machine to operate in direct drive for more efficient operation at higher engine speeds and in converter mode for more low end torque.
  • Six forward and three reverse gears are specifically designed to give you a wide operating range for maximum productivity in all mining applications.
  • Balanced Planetary Transmission provides superior load distribution and heat dissipation for longer transmission life.
  • Engine Over-Speed Protection prevents downshifting until an acceptable safe travel speed has been established.
  • Stall speed protection limits engine speed at high stall ratios to help protect the driveline and machine systems.

Front and Rear Axles
The sealed spindle keeps front axle bearings lubricated and protected from contaminants. The Cat “Live Spindle” design places the larger tapered roller bearing on the outside, where the load is greater, extending bearing life. A bolt-on modular rear axle improves serviceability and contamination control with easy access to differential components.

Front and Rear Axles

Hydraulic Brakes
Oil-bathed multi-disc service brakes are hydraulically actuated for smooth, predictable braking and lower operating costs. Brakes are located at each tandem wheel for a large total brake surface area to give you dependable stopping power and longer life.

Hydraulic Brakes

Structures and Drawbar-Circle-Moldboard

Caterpillar designs motor grader frame and drawbar components to give you performance and durability in heavy duty applications. The one-piece forged steel circle stands up to high stress loads, and a sacrificial wear system helps keep your service time and costs down. The articulation hitch features a large tapered roller bearing to carry loads evenly and smoothly. It is sealed to prevent contamination and a locking pin prevents articulation for safety during service or transport.

Blade Angle and Moldboard
An aggressive blade angle helps you work more efficiently by allowing material to roll more freely along the blade. The moldboard features heat-treated rails, hardened cutting edges and end bits, and heavy duty bolts to give you greater reliability and long service life. Optimized moldboard curvature and large throat clearance help you move material more efficiently.

Blade Angle and Moldboard

Easy Maintenance for More Uptime
A series of shims, strips and wear inserts are easy to add or replace. This keeps drawbar-circle moldboard components factory-tight for higher quality work, and saves you service time and costs. An adjustable rear circle drive reduces service time and loading to help increase system life. Six bolt-on tooth segments on the circle can be individually replaced to reduce cost and downtime for maintenance.


State-of-the-art electro-hydraulics give you advanced machine controls with precise and predictable movements.

Load Sensing Hydraulics (PPPC)
A proven load-sensing system and advanced Proportional Priority Pressure-Compensating (PPPC) electro-hydraulic valves give you superior implement control and enhanced machine performance. Continuously matching hydraulic flow/pressure to power demands creates less heat and reduces power consumption.
  • Consistent, Predictable Movement - PPPC valves have different flow rates for the head and rod ends of the cylinder, so you can count on consistent, predictable implement response.
  • Balanced Flow - Hydraulic flow is proportioned to give you confidence that all implements will operate simultaneously without slowing the engine or speed of some implements.

Blade Float
Allows the blade to move freely under its own weight. By floating both cylinders, the blade can follow the contours of the haul road. Floating only one cylinder permits the toe of the blade to follow a hard surface while the operator controls the slope with the other lift cylinder. An optional Variable Down Pressure feature allows you to select the amount of down force when the blade is in float. This helps you extend cutting edge life and is effective for removing snow and mud from a road surface.

Blade Float

Independent Oil Supply
Large, separate hydraulic oil supplies prevent cross-contamination and provide proper oil cooling, which reduces heat build-up and extends component life. Cat XT™ hose allows high pressures for maximum power and reduced downtime.

Independent Oil Supply

Integrated Technologies

VIMS uses on-board sensors to monitor a wide range of vital machine functions. If an abnormal condition is detected, it will alert the operator and instruct them to take appropriate action. This improves availability, component life and production while reducing repair cost and the risk of a catastrophic failure.

Cat Grade Control Cross Slope
Cross Slope is a standard, fully integrated, factory installed system that helps increase operator productivity and precision to achieve desired cross slope by automating one end of the blade. The system is scalable, supporting all two- and three-dimensional upgrades to be fully compatible with all AccuGrade™ kits.

Cat MineStar™ System
Cat MineStar System is the industry's broadest suite of integrated mine operations and mobile equipment management technologies, configurable to suit your operation's needs.
  • Fleet provides real-time machine tracking, assignment and productivity management, giving you a comprehensive overview of all operations from anywhere in the world.
  • Terrain enables high-precision management of drilling, dragline, grading and loading operations through the use of guidance technology. It increases machine productivity and provides you real-time feedback for improved efficiency.
  • Detect helps increase operator awareness, enhancing safety at your operation. It includes a range of capabilities designed to assist the operator with areas of limited visibility around fixed and mobile equipment.
  • Health works to minimize unscheduled downtime and productivity loss, plus helps you keep your operating costs in check by streamlining service and maintenance management.
For additional information, please see your Cat dealer or visit mining.cat.com/miningtechnology.

Cat MineStar™ System

Cat Product Link*
Remote monitoring with Product Link improves your overall fleet management effectiveness. Events, diagnostic codes and data like hours, fuel, idle time are transmitted to a secure web based application, VisionLink®. VisionLink includes powerful tools to convey information to you and your Cat dealers, including mapping, working and idle time, fuel level and more. *Product Link licensing not available in all areas. Please consult your Cat dealer for availability.

Cat Product Link*


Operator Presence Monitoring System
Keeps the parking brake engaged and hydraulic implements disabled until the operator is initially seated and the machine is ready for operation.

Speed Sensitive Steering
Makes steering less sensitive as ground speed increases for greater operator confidence and control.

Secondary Steering System
Automatically engages a mechanical pump driven by transmission output so the operator can steer the machine to a stop.

Hydraulic Lockout
Disables all implement functions while still providing machine steering control. This safety feature is especially useful while roading.

Brake Systems
Brakes are located at each tandem wheel to eliminate braking loads on the power train. Redundant brake systems utilize accumulators to enable stopping in case of engine failure.

Brake Systems

Walkways and Grab Rails
Perforated steel tandem walkways and conveniently located grab rails offer a sturdy platform and support for moving on, off and around the machine. Lighting can be activated from ground level and turned off via in-cab switch.

Walkways and Grab Rails

Object Detection
Optional camera and radar system alerts operator via an in-cab display if any objects are in close proximity when the machine is in reverse. The scalable system allows cameras and a display to be installed initially and radar to be added later for additional functionality.

Object Detection

Front and Rear Cameras
Cameras with in-cab monitors are available to further enhance lines of sight to help increase operator awareness of their surroundings.

Circle Drive Slip Clutch
Protects the drawbar, circle and moldboard from shock loads when the blade encounters an immovable object. This standard feature also reduces the possibility of abrupt directional changes in poor traction conditions.

Circle Drive Slip Clutch

Blade Lift Accumulators
Help absorb impact loads to the moldboard by allowing vertical blade travel. This standard feature helps reduce unnecessary wear and also help reduce impact loading for enhanced operator safety.

Other Safety Features
  • Grouped, ground level service points
  • Laminated front window glass
  • Optional LED Lighting
  • Ground-level electrical disconnect switch
  • Ground-level engine shutoff switch
  • Optional dual access platform with emergency egress ladder
  • Dual exits
  • Auxiliary equipment mounting area
  • Glare reducing paint for night operation

Other Safety Features

Serviceability and Customer Support

Cat motor graders are designed to help customers increase uptime and reduce costs. Grouped service points and extended service intervals save maintenance time. A standard Automatic Lubrication System maintains proper grease on working surfaces, increasing component life and purging contaminants from pins and bushings to help prevent damage. Standard Fast-Fill allows customers to refuel in less than four minutes to get back on the job quickly.

Advanced Diagnostics
  • Cat VIMS monitors vital machine functions and alerts the operator if action is needed.
  • Cat Messenger, combined with full systems integration, enhances diagnostic capability for quick analysis of critical data.
  • Electronic Technician (Cat ET) lets service technicians access stored diagnostic data and configure machine parameters through the Cat Data Link.
  • Low Battery Elevated Idle raises idle speed when low system voltage is detected, ensuring adequate system voltage and improving battery reliability.
  • Automatic Engine Deration protects the engine and aftertreatment by automatically lowering engine torque output and alerting the operator if critical conditions are detected.

Unparalleled Dealer Support
When it comes to supporting customers, especially in remote or challenging conditions, Cat dealers are second to none. From machine selection and purchase to maintenance support and rebuilds, Cat dealers have the experience and capabilities to keep customers up and running.

Unparalleled Dealer Support


Fuel Efficiency
  • ACERT engine technology helps improve fuel efficiency. The 24M motor grader is 8-13 percent more fuel efficient* than the 24H.
  • Integrated machine systems and technologies improve productivity for greater accuracy, lower fuel use and reduced machine wear. *Fuel efficiency and productivity estimates may vary based on application, operator, operating conditions, emission rating and other factors influencing machine performance.

Green House Gas Emissions
• Reduced fuel consumption means reduced CO2 emissions.

Material Efficiency and Life Cycle Costs
  • Replaceable wear parts save maintenance time and cost, and extend major component life.
  • Major components are built to be rebuilt, eliminating waste and saving customers money by giving the machine and/or major components a second - and even third - life.
  • Machine is built with a 97% recyclability rate (ISO 16714) to conserve valuable natural resources and further enhance machine end-of-life value.

• Reduced engine noise and quieter cabs mean lower operator and spectator sound levels.

Safety and the Environment
  • Ecology drains help make draining fluids more convenient and help prevent spills.
  • Cartridge style fluid filters provide safe clean draining of filters prior to replacement - helping to prevent fluid spills.
  • A variety of safety features help safeguard operators and others on the job site.

Standard Equipment

  • Air cleaner, dual stage dry type radial seal with service indicator and automatic dust ejector
  • Air-to-air after cooler (ATAAC)
  • Brakes, oil disc, four-wheel
  • Demand fan, hydraulic
  • Differential, lock/unlock, Automatic/Manual
  • Drain, engine oil, high speed
  • Electronic over speed protection
  • Engine, C18 with ACERT Technology, diesel, with automatic engine derate and idle control, and compression brake: - C18 ACERT (Tier 3) REQUIRED FOR: United States, Canada, Guam, Samoa, Croatia, Turkey, European Union, Israel, Japan, South Korea, Azores. Note: For U.S. and Canadian dealers only, engine is EPA/ARB Flexibility Engine. Note: For all other regions, engine meets non-current U.S. EPA Tier 3 or EU Stage IIIA emission standards. - C18 ACERT (Tier 2) Provides improved performance in regions using fuel with a high boiling point; improved altitude capability, fuel economy, and resistance to piston deposits. NOT FOR USE BY: United States, Canada, Guam, Samoa, Croatia, Turkey, European Union, Israel, Japan, South Korea, Azores. Note: Engine meets non-current U.S. EPA Tier 2 or EU Stage II emission standards.
  • Ether starting aid
  • Parking brake, multi-disc, sealed and oil cooled
  • Sediment drain, fuel tank
  • Transmission, 6 speed forward and 3 speed reverse, power shift, autoshift
  • Alarm, back-up
  • Alternator, 150 ampere, sealed, filtered air intake
  • Batteries, maintenance free, 1,500 CCA
  • Electrical hydraulic valves, base 8
  • Electrical system, 24 volt
  • Grade Control Ready (cab harness, software, electrical hydraulic valves, bosses and brackets)
  • Lights, reversing, stop, tail, turn
  • Starter, receptacle, plug-in
  • Air conditioner and heater
  • Articulation, automatic return to center
  • Defroster fan, rear window
  • Display, digital speed and gear
  • Gauges (analog) inside the cab (fuel, articulation, engine coolant temp, engine RPM and system voltage)
  • Messenger operator information system
  • Mirror, inside rearview, wide angle
  • Power port, 12V
  • Radio ready (entertainment)
  • ROPS cab, sound suppressed less than 75 dB(A) ISO 6394 100% fan speed
  • Seat, cloth, air suspension
  • Throttle control, electronic
  • Windows: laminated glass - fixed front with intermittent wiper, sides (2), rear with wiper/washer
  • Product Link Ready
  • Clutch, circle drive slip
  • Doors, 8 engine compartment, (four left-hand, four right-hand) locking
  • Ground level engine shutdown
  • Horn, electric
  • Lockout, hydraulic implement for roading and servicing
  • Paint, glare reducing, top of front frame and top of rear enclosure
  • Seat belt, retractable 76 mm (3 in)
  • Secondary steering
  • Tandem walkway/guards
  • 25 × 29 multi-piece rims
  • Cutting edges, 330 mm × 28 mm (13 in × 11⁄8 in), curved DH-2 steel, 25 mm (1 in), mounting bolts, 19 mm (0.75 in), includes endbits
  • Moldboard, 7315 mm × 1067 mm × 50 mm (24 ft × 42 in × 2 in)
  • Ripper, rear, 7 shank capacity, 3 shanks/tips provided
  • Extended Life Coolant to -50° C (-58° F)
  • Fluid check, ground level
  • Accumulators, blade lift
  • Autolube, Lincoln Centro-Matic
  • Drawbar, 8 shoe with replaceable wear strips
  • Electrical hydraulic valves, base 8
  • Fuel tank, 1325 L (350 gal) Fast Fill
  • Integrated Cat Grade Control Cross Slope
  • Ground level fueling
  • Push plate-counterweight
  • S·O·SSM ports, engine, hydraulic, transmission, coolant, fuel

Optional Equipment

  • Cutting edge, 330 mm × 28 mm (13 in × 1.12 in) straight cutting edge
  • Cutting edge, 330 mm × 45 mm (13 in × 1.77 in) straight cutting edge
  • Cutting edge, 406 mm × 28 mm (16 in × 1.12 in) straight cutting edge
  • Cutting edge, 406 mm × 45 mm (16 in × 1.77 in) straight cutting edge
  • Tooth, ripper, straight shank, one tooth
  • Control, blade, variable float
  • Dual access platform package, basic
  • Dual access platform package, plus
  • Cab basic
  • Cab plus
  • Product Link
  • Installation, AccuGrade Ready
  • Fenders, rear
  • Rim, spare 29.5-29
  • Cold weather package
  • Lighting package, basic (halogen)
  • Lighting package, plus (HID)
  • Lighting package, plus (LED)
  • Lights, work, heel 5×5
  • Lights, work, heel HID
  • Lights, work, heel LED
  • Light, LED warning strobe
  • Radio, 12V, AM/FM weather band
  • Radio, satellite, Sirius
  • Radio ready, satellite
  • Camera, rear vision
  • Mirrors, outside mounted
  • Mirrors, outside heated 24V
  • Guard package
  • Guard, sound
  • Sound suppression, engine enclosure