Engine ModelCat C18 ACERT
Bore5.7 in (145 mm)
Stroke7.2 in (183 mm)
Displacement1106 in³ (18.1 l)
The Cat 745 with a 25 m³ (32.7 yd³) 41 tonnes (45.2 tons) capacity brings a new level of operator comfort and features to the market in addition to the durability, high productivity and lower operating costs Cat Articulated Trucks are known for.<br>The all-new operator cabin is a leap into the next generation for Articulated Trucks, providing our operators the best place to help build the future.


Engine ModelCat C18 ACERT
Bore5.7 in (145 mm)
Stroke7.2 in (183 mm)
Displacement1106 in³ (18.1 l)
Net Power - ISO 14396504 HP (376 kW)
Net Power - SAE J1349496 HP (370 kW)
Gross Power - SAE J1995511 HP (381 kW)
Engine Model - U.S. EPA Tier 4 Final, EU Stage V, Japan 2014 (Tier 4 Final), Korea Tier 4 FinalCat® C18 ACERT™
Rated Payload45.2 t (41 t)
Heaped (SAE 2:1)32.7 yd³ (25 m³)
Struck24.2 yd³ (18.5 m³)
Tailgate Heaped SAE 2:134.7 yd³ (26.5 m³)
Tailgate Struck25.5 yd³ (19.5 m³)
Forward - 13.8 mile/h (6.1 km/h)
Forward - 25 mile/h (8.1 km/h)
Forward - 37 mile/h (11.2 km/h)
Forward - 48.8 mile/h (14.1 km/h)
Forward - 511.6 mile/h (18.7 km/h)
Forward - 614.2 mile/h (22.9 km/h)
Forward - 719.6 mile/h (31.5 km/h)
Reverse - 14 mile/h (6.4 km/h)
Reverse - 29.1 mile/h (14.6 km/h)
Interior Cab72 dB(A) (72 dB(A))
Rear Axle - Rated Load38691 lb (17550 kg)
Front Axle - Empty43515 lb (19738 kg)
Total - Loaded163942 lb (74363 kg)
Rear Axle - Empty14731 lb (6682 kg)
Rear Axle - Loaded53422 lb (24232 kg)
Total - Rated Load90390 lb (41000 kg)
Front Axle - Rated Load13007 lb (5900 kg)
Center Axle - Rated Load38691 lb (17550 kg)
Total - Empty73553 lb (33363 kg)
Front Axle - Loaded56522 lb (25638 kg)
Center Axle - Loaded54000 lb (24494 kg)
Center Axle - Empty15309 lb (6944 kg)
TypeHigh Strength Brinell HB450 Wear Resistant Steel
Fuel Tank145.3 gal (US) (550 l)
Cooling System23.7 gal (US) (90 l)
Engine Crankcase13.7 gal (US) (52 l)
Steering/Hoist Hydraulic System36.9 gal (US) (140 l)
Transmission - OTG19.8 gal (US) (75 l)
DEF Tank5.3 gal (US) (25 l)
Brake Cooling Tank17.69 gal (US) (67 l)
Raise (automatic)13 s (13 s)
Raise (manual)12 s (12 s)
Lock to Lock4.8 seconds @ 60 rpm
BrakesISO 3450 – 2011
Cab - FOPSISO 3449 Level II – 2005
Cab - ROPSISO 3471 – 2008
SteeringISO 5010 – 2007
Turning Dimensions - Aisle Width233 in (5917 mm)
Turning Dimensions - Inside Radius174 in (4413 mm)
Turning Dimensions - Clearance Radius356 in (9082 mm)
Turning Dimensions - SAE Turning Radius340 in (8625 mm)
NoteDimensions are for machines equipped with 29.5R25 tires.
Turning Dimensions - Steer Angle - Left/Right45 deg
Forward - 823.5 mile/h (37.9 km/h)
Final Drive - Each1.3 gal (US) (5 l)
Base0.55 in (14 mm)
Note (4)DEF used in Cat SCR systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241-1. ISO 22241-1 requirements are met by many brands of DEF, including those that carry the AdBlue or API certifications.
Note (1)The power ratings apply at rated speed of 1,700 rpm when tested under the conditions for the specified standard.
Note (1)The operator sound exposure Leq (equivalent sound pressure level) measured according to the work cycle procedures specified in ANSI/SAE J1166 OCT98 is 76 dB(A), for the cab offered by Caterpillar, when properly installed and maintained and tested with the doors and windows closed.
Lower (automatic)10 s (10 s)
Axles - Each15.8 gal (US) (60 l)
No Engine De-rating Required Below10000 ft (3050 m)
Forward - 934 mile/h (54.8 km/h)
Chute0.55 in (14 mm)
Hydraulic Excavator: 390 - Passes4
Note (2)The net power advertised is the power available at the flywheel when the engine is equipped with alternator, air cleaner, muffler and fan at minimum speed.
Note (2)Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in noisy environments.
Note (3)Net power when the fan is at maximum speed is 348 kW (467 hp) per the SAE reference conditions.
Peak Engine Torque Gross (SAE J1995)1931 ft·lbf (2618 N·m)
Lower (manual)10 s (10 s)
Wheel Loader: 982 - Passes4
Side0.43 in (11 mm)
Wheel Loader: 972 - Passes4-5
Peak Engine Torque Speed1200 r/min (1200 r/min)
Front0.28 in (7 mm)
Peak Engine Torque Net (SAE J1349)1887 ft·lbf (2558 N·m)
EmissionsThe 745 meets Tier 4 Final and Stage V emission standards.
Hydraulic Excavator: 374 - Passes5
NoteAn optimum system match gives you a major productivity advantage. Having matched loading and hauling tools results in increased production and lower system costs per unit of volume moved.
Wheel Loader: 980 - Passes4-5

Benefits and Features

  • Every Tier 4 Final/Stage IV and EU Stage V Cat engine is equipped with a combination of proven electronic, fuel, air and aftertreatment components.
  • Maximized uptime and reduced cost with world-class support from the Cat dealer network.
  • Minimized impact of emission systems: designed to be transparent to the operator without requiring interaction.
  • Delivering better fuel economy with minimized maintenance costs while providing the same great power and response.
  • Advanced MEUI-C injector platforms deliver increased injection pressures and more precise fuel rates. These durable injectors enhance responsiveness while controlling soot.
  • All Cat engines feature innovative air-management systems that optimize airflow and enhance power, efficiency and reliability.
  • The Cat NOx Reduction System (NRS) captures and cools a small quantity of exhaust gas, then routes it back into the combustion chamber where it drives down combustion temperatures and reduces NOx emissions.
  • Cat engines equipped with a Selective Catalytic Reduction (SCR) system inject Diesel Exhaust Fluid (DEF) into the exhaust to reduce NOx emissions. DEF is a precisely mixed solution of 32.5 percent high purity chemical grade urea and 67.5 percent de-ionized water.

  • Advanced Automatic Traction Control (AATC) proactively applies inter- and cross-axle differential locks ‘on-the-go.’ Operators are freed from this function to concentrate on driving/loading/dumping. Sensors monitor the machine and wheel speeds, enabling instant response in high rolling resistance conditions. Operation is seamless and smooth, eliminating wheel slip for maximum traction and productivity.
  • Clutches are automatically disengaged when ground conditions allow, maximizing efficiency when steering or when on uneven ground.
  • AATC reduces tire and driveline abuse, eliminating lost machine efficiencies caused by improper manual operation of the differential clutches and reducing the tire wear.
  • Automatic Retarder Control (ARC) automates the retarder for the operator. Like AATC, a number of machine operating aspects are monitored. If required, the engine compression brake is engaged automatically to control machine speed when descending a grade. The system can help towards eliminating engine overspeed, improving safe machine operation and reducing cycle times, yet still having the flexibility of manual control if needed.
  • New Assisted Hoisting Control automates the dumping function. Flick the new body raise/lower switch and the machine will apply the service brakes, switch the transmission to neutral and raise the body at the required engine rpm. Lowering the dump body is done the same way, flick the switch and the machine will lower the body and place it in float.

  • All three axles promote stability using oscillating a-frames with lateral tie rods. Operate at productive speeds with confidence while virtually eliminating impact loads on truck components.
  • The front suspension oscillates controlled by large-bore, low-pressure cylinders to assist in a smooth ride. An A-frame with lateral tie rod controls sideways movement and aids stability.
  • The rear suspension features a walking beam and long-life suspension mounts optimizing ride and load retention.
  • New fully enclosed wet disc brake systems inside of axles keeps contaminants out extending machine life and ensuring uptime.
  • Hill assist reduces potential 'roll-back' on grades. If an operator stops the machine on a grade, when taking his foot off the service brake pedal the machine will automatically hold the service brakes on for a number of seconds to prevent the machine from rolling backwards.
  • Waiting brake applies the service brakes when neutral gear is selected, allowing quick and easy control of the machine at the load or dump area.

  • Spacious cab delivers comfort all shift long and is 7dB quieter than prior model.
  • Unique combination hoist/transmission lever is intuitive and enhances cycle times with fewer control movements.
  • Trainer/passenger seat is fully padded with wide, retractable seat belt for security and comfort.
  • New large side storage box is heated/cooled by the HVAC system.
  • Air-suspension seat offers greater comfort, with a greater range of adjustments. Fore/aft isolation dramatically reduces vibrations and jolts. Every operator will find a adjustments to ensure comfort and control all shift long.
  • Standard cooling/heating system ensures comfort in all conditions.
  • Optional four-point seat belt is available to help operator stay in position and comfortable in rugged terrain.
  • Integrated, wrap-around dash means all gauges and controls are easy to monitor and access. Automotive feel with Caterpillar's renowned industrial strength.
  • The updated touch screen dash mounted display allows the operator to monitor and adjust various levels of machine performance and condition, as well as machine warning categories. These include configuration settings, operator and machine totals, service information, various machine status parameters, machine payload information (when fitted), stability assist, and the video feed from the rearview camera.
  • Optional Bluetooth™ entertainment system allows operator to stay in hands-free phone contact.

  • Box section front frame absorb is stiff to handle torque loads. Frame design decreases stress at the hitch and optimizes suspension geometry.
  • Rear frame features twin-box construction minimizing stress points and enhancing service life.
  • The articulating hitch provides the truck with steering articulation, and the oscillation ensures all-wheel ground contact in rough terrain.
  • Field proven two-piece hitch construction features a durable cast steel head bolted to a hard wearing forged steel tube.
  • Dump body design provides a large target area for consistent high-load carrying capacity increasing productivity. Diverging flow when dumping aids material flow out of the body maximizing productivity and avoiding carry-back.
  • The output transfer gear distributes drive to the tractor and trailer and includes a wet clutch differential lock for optimum traction in poor underfoot conditions.
  • The full power hydraulic brake system actuates enclosed, oil-immersed, multi-disc, multi-plate brakes with independent front and rear circuits and accumulators. This dual-circuit, all wheel braking system provides the braking performance required to support maximum productivity.
  • The parking brake is located on the center axle in an elevated position, it is spring applied and hydraulically released.

  • Cat Product Link wirelessly connect you to your equipment, giving you valuable insight into how your machine or fleet is performing. The system tracks location, hours, fuel usage, productivity, idle time, and diagnostic codes through the online VisionLink user interface so you can make timely, fact-based decisions to maximize efficiency, improve productivity, and lower costs.
  • Cat Production Measurement brings payload weighing to the cab to help optimize job site efficiency and productivity. Operators can view real-time load weights on the integrated display and know precisely when target is achieved, while cab-mounted external payload lights on all four corners signal the loader operator when to stop, reducing the risk of machine overloading. Operators can track daily productivity from the cab, with quick access to truck payload weights, loads and cycle counts, and daily totals; or remotely via LINK technologies.
  • Cat Detect with Stability Assist warns the operator if machine is approaching a pre-set angle during operation; when driving and tipping. If using the assisted hoist, the machine will stop hoisting the body and give an audible and visual warning. The system monitors angles of tractor, trailer and grade independently. This increases operator awareness of machine stability during operation. All tractor and/or trailer rollover events are logged and reported via VisionLink.

  • Caterpillar design, manufacturing and customer service help ensure peak performance and uptime.
  • Long service intervals keep your machine operating.
  • Lubrication points are grouped near the hitch for fast, easy routine maintenance.
  • Universal joints are sealed and lubed for long life.
  • Optional Autolube system saves time and includes alerts via Product Link for low levels and fault codes.
  • Radiator package is located behind the cab for protection and uses extended-life coolant to stretch change intervals.
  • Electrical service center is located inside the cab and provides a power port, diagnostic connector and Cat Data Link connector for use with Electronic Technician (ET) software-equipped laptop computer.
  • Easy access to transmission, drive shafts, hydraulic pumps and electrical and hydraulic interfaces provided with tilt-to-side cab and access panel.
  • Service points are conveniently located on the left side of the engine, under the electrically raised hood.
  • Complete customer support is the goal of your Cat dealership. From counsel of product selection, operating costs, operation, maintenance all the way to help with decisions on when and whether to replace or rebuild, your dealer is with you all the way.

  • Caterpillar designs and functions with great concern for the environment.
  • Cat C18 engine incorporates the Cat Clean Emission Module (CEM) to meet Tier 4 Final/Stage IV emission standards. The system uses both Ultra-low-sulfur diesel (ULSD) fuel or up to B20 bio-diesel blended with ULSD.
  • All Cat C Series Articulated Trucks are designed for long lifecycles with machines using reman components and machine rebuilds to maximize use of every part, minimizing waste.
  • Volume of both hydraulic and engine oil systems has be reduced meaning less waste when oils are replaced.

  • Seat belt in use indicator (four-point seat belt available as an option)
  • Operator presence detection (prevents gear engagement when operator is not seated)
  • Additional mirror for front of machine visibility
  • Cab mounted, wide angled, folding mirrors
  • Heated mirrors (optional)
  • Body raised visual indicator
  • Cab integral Roll Over Protection System (ROPS) and Falling Object Protection System (FOPS)
  • Electro-hydraulic secondary steering system automatically activates in forward/reverse or when stationary if low pressure is sensed and can be manually selected for machine recovery purposes
  • Extensive handrails
  • External electrical system disconnect switch for easy access from outside of the machine
  • Fire extinguisher in-cab mounting point
  • Fully raised body locking pin
  • Ground level external engine fuel cut-off switch provides easy access outside of the machine
  • In-cab emergency brake switch (tertiary)
  • Internal and external grab handles
  • LED-flashing beacon (optional)
  • Maximum speed limiter
  • Multiple camera compatible
  • New access lights
  • Rearview camera system is fitted as standard
  • Reversing indicator
  • Slip resistant walkways – punched steel plate
  • The parking brake functions are spring applied and hydraulic released
  • Cat Detect with Stability Assist

Standard Equipment

  • Air conditioning with R134A refrigerant
  • Product Link: PL631 or PL641 dependent on location and licensing agreement
  • Batteries (two) maintenance free
  • Auto shift nine-speed forward and two reverse transmission
  • Reverse alarm
  • Rear window
  • Mud flaps: wheel arch and body mounted with transportation tiebacks

Optional Equipment

  • Auto lube installation for automatic greasing of bearings