Specifications & Technical Data


Specifications & Technical Data Caterpillar 745c

The new Caterpillar 745c Articulated Truck features a completely redesigned cab that offers 20% more interior volume than the previous 745C and is twice as quiet.

For the new Caterpillar 745c articulated truck, which made its world debut at ConExpo in Las Vegas, Caterpillar design engineers devoted most of their efforts to a completely redesigned cab that offers 20% more interior volume than the model. 745C above and is twice as quiet. (The 745 is the first Caterpillar machine to feature a new numeric-only coding system, versus the previous alphanumeric style.)

The cab design reduces noise levels by 7 dB, from 79 to 72 dB. “That’s the equivalent of you guys driving your midsize sedans on the highway, that’s what 72 dB is,” Scott Thomas, an articulated truck applications specialist, said at a ConExpo briefing.

“We have focused this new generation of 745 on the operator,” said Thomas. “An operator can have a big impact on profitability just based on his comfort and skill level.”

A new luxury seating option focuses on comfort, offering heated / cooled leather seats with a four-point belt option and more configuration adjustments. Infrared glass around the cab is unique to Caterpillar, according to Thomas, and reduces solar heating inside the cab.

“We had this in mind before we went into production with the C Series” about two years ago, Paul Taylor, global director of articulated trucks at NPI, told Truck & Off-Highway Engineering. “Now we come up with the last piece of the puzzle, which is a completely new operator station, because our operator station was about 15 years old.”

The biggest challenge was adapting the new cab to a machine that is not much different from the C Series: “We didn’t want to redesign the whole machine for a new operator station, but we wanted to get more space,” said Taylor.

Although the cabin is larger, the ergonomics have improved, he noted. “Using the VPD (virtual product development) and simulation environments that we have, we have been able to develop it even before we built the cockpit,” said Taylor. “Our virtual reality technology has allowed our engineers [in Peterlee, England] to sit on a machine in the cockpit for the last three years, to make sure we have all of these correct distances.”

Exoskeletal design improves visibility

The new mirror placement and cab redesign result in a truck that is 286mm shorter and 364mm narrower than the 745C it replaces. The mirrors are now mounted in the cab, instead of their previous location on the fenders, reducing vibrations and improving visibility. The low-profile exhaust stack has been moved to the center and is at the same height as the top of the cab. “The operator no longer has to remove the exhaust stack [for transportation] and the mirrors fold down so he can get from job site to job site much faster,” said Thomas.

A convex front mirror now allows the operator to see from a seated position if someone is standing in front of the machine. In general, the new 745 has two fewer mirrors than before. A new “spinal” ROPS outer shell features a bonded rear glass that eliminates the structural pillar.

“Notice we have the two corner posts at the front, but we have removed them at the rear,” he said. “Why have we done it? Because of the visibility.”

Sliding windows on the left and right increase ventilation and improve communication with workers and the cargo vehicle.

A new “wake up” function activates the machine’s displays as soon as the door is opened, rather than waiting for the key to be turned. “We have reduced the time it takes for everything to cycle and go through its diagnostic checks. As soon as the handle is opened, the machine starts to warm up and wake up as the operator positions himself,” explains Thomas.

The 745’s touch screen, with revised menus, allows the operator to control machine functions and customize a number of options. Next to the display is an emergency brake switch, in case of problems with the primary and secondary brake circuits.

The increased number of vents above and behind the operator allow the new HVAC system to heat and cool the cab more efficiently. “We’re moving 12% more air in there with more vents and a better fan,” he said.

A ground-level switch controls the new access lights that illuminate the steps and the hitch area to enhance safety when entering the cab. The cab door is 36% lighter than before and now offers a closing assistant to improve the seal against dust infiltration.

“It is now a stamped door rather than a prefab one,” Thomas said. “The old door was literally 4 inches or more thick; this new one is maybe an inch and a quarter” and the tolerances are tighter.

Intelligent machine controls

Another unique Cat technology, according to Thomas, is the new combined drive and lift lever within the cab, which provides operators with single lever control over truck speed and body lift functions to minimize operator effort and automate repetitive operations.

“This is important for operators,” he said, as it involves 50% fewer interventions and improves lift cycle time by 20%. Operators can choose between manual or fully automatic lift control at the flick of a switch, which automatically applies the holding brake, puts the transmission in neutral and raises the body to full angle at high revs.

A new push button lever control allows the operator to adjust machine speed and select transmission hold / hold brake. Gearshift protection on the new 745 Articulated Truck now protects the powertrain by safely stopping the machine when shifting from forward to reverse and vice versa.

The new Cat Detect with Stability Assist system audibly and visibly alerts the operator if the towing vehicle or trailer has reached an angle threshold at which rollover becomes a hazard, both while driving and when rolling over. In the event of a rollover, it will stop raising the body. The system logs the rollover events and reports through VisionLink.

Advanced Automatic Traction Control monitors ground conditions and proactively applies differential locks before wheels spin. Terrain-based throttle smoothing prevents the machine from disengaging when the operator travels over uneven terrain and cannot maintain constant pressure on the accelerator pedal.

Cat Connect Payload technology on the new 745 truck enables customers to streamline operations and improve overall job site efficiency. The available Cat Production Measurement system calculates payload using sensors on the stringers, showing both the machine and the loading tool operator when the rated payload is reached. The system helps maximize each payload while minimizing overload and premature wear.

Charge status lights located at the four corners of the cab roof help improve the visibility of the loading tool operator and job controllers.

Built on the platform of the C series Specifications & Technical Data

With a nominal payload capacity of 45.2 tons (41 t), the new CAT 745 articulated truck incorporates many of the characteristics and yields of the C series, including the CAT CX38B High Density Power SHIFT transmission and permanent traction in the Six wheels The C18 Acet engine, with a net power of 504 HP (375 kW), complies with ESA EMA emissions standards. And phase IV of the EU.

A new saving mode can improve fuel consumption in an average of 5%, maintaining the maximum torque, in applications where the wheelbarrow is not required to run at full productivity. Get a fuel savings thanks to early ascending changes, the descending changes delayed / contracted and the limitation of the engine regime at 1,700 rpm in certain operating modes.

The automatic delay control manages the delay of the machine by means of a combination of motor, brake, selection of gears and application of the service brake without the intervention of the operator. The Hill Assist system allows to reduce the speed and tear with greater smoothness in the earrings, while the Waiting Brake system, which is activated by a button on the control lever, temporarily applies the service brake during pauses in the work cycle .

The lower part of the front fenders is now a flexible rubber sheet material, in an effort to reduce the costs of maintenance and repair due to the accumulation of mud around the fenders.

Specifications & Technical Data

CATERPILLAR 745C Specifications & Technical Data OFF-HIGHWAY TRUCK



MODEL:  745C 

Body Capacities

Heaped (SAE 2:1)32.7 cu yds (25 m)
Struck24.2 cu yds (19 m)
Tailgate Heaped SAE 2:134.7 cu yds (27 m)
Tailgate Struck25.5 cu yds (20 m)

Body Hoist

Lower Time8 sec
Raise Time12 sec

Body Plate

Body Plate TypeHigh strength Brinell HB450 wear resistant steel


Capacity – Heaped32.7 cu yds (25 m)
Capacity – Struck24.2 cu yds (19 m)
Lower Time8 sec
Raise Time12 sec
Rated Payload90400 lbs (41,005 kg)


Bore5.7 in (14 cm)
Displacement1106 cu in (0 m)
Engine ModelCat C18 ACERT
Engine Model – U.S. EPA Tier 4 Final/EU Stage IV/Japan 2014 (Tier 4 Final)/Korea Tier 4 FinalCat C18 ACERT
Gross Power511 hp (381 kw)
Gross Power – SAE J1995511 hp (381 kw)
Net Power496 hp (370 kw)
Net Power – ISO 14396504 hp (376 kw)
Net Power – SAE J1349496 hp (370 kw)
No Engine De-rating Required Below10000 ft (3,048 m)
Peak Engine Torque Gross (SAE J1995)1931 lbs/ft
Peak Engine Torque Net (SAE J1349)1887 lbs/ft
Peak Engine Torque Speed1200 rpm
Stroke7.2 in (18 cm)
Torque Measured @1200 rpm

Operating Specifications

Cooling System Fluid Capacity23.7 gal (90 l)
Fuel Capacity145.3 gal (550 l)
Hydraulic System Fluid Capacity36.9 gal (140 l)
Transmission Fluid Capacity19.8 gal (75 l)

Operating Weights

Center Axle – Empty15300 lbs (6,940 kg)
Center Axle – Loaded53991 lbs (24,490 kg)
Center Axle – Rated Load38691 lbs (17,550 kg)
Front Axle – Empty43585 lbs (19,770 kg)
Front Axle – Loaded56593 lbs (25,670 kg)
Front Axle – Rated Load13007 lbs (5,900 kg)
Rear Axle – Empty14749 lbs (6,690 kg)
Rear Axle – Loaded53440 lbs (24,240 kg)
Rear Axle – Rated Load38691 lbs (17,550 kg)
Total – Empty73634 lbs (33,400 kg)
Total – Loaded164024 lbs (74,401 kg)
Total – Rated Load90389 lbs (41,000 kg)

Service Refill Capacities

Axles – Each15.8 gal (60 l)
Brake Cooling Tank17.7 gal (67 l)
Cooling System23.7 gal (90 l)
DEF Tank6.6 gal (25 l)
Engine Crankcase13.7 gal (52 l)
Final Drive – Each1.3 gal (5 l)
Fuel Tank145.3 gal (550 l)
Steering/Hoist Hydraulic System36.9 gal (140 l)
Transmission – OTG19.8 gal (75 l)

Sound Levels

Interior Cab79 dB(A)


BrakesISO 3450 2011
Cab – FOPSISO 3449 Level II 2005
Cab – ROPSISO 3471 2008
SteeringISO 5010 2007

Steering System

Lock to Lock4.8 seconds @ 60 rpm


Forward – 13.8 mph (6 kph)
Forward – 25 mph (8 kph)
Forward – 37 mph (11 kph)
Forward – 48.8 mph (14 kph)
Forward – 511.6 mph (19 kph)
Forward – 614.2 mph (23 kph)
Forward – 719.6 mph (32 kph)
Forward – 823.5 mph (38 kph)
Forward – 934 mph (55 kph)
Number of Forward Gears9
Number of Reverse Gears2
Reverse – 14 mph (6 kph)
Reverse – 29.1 mph (15 kph)

Turning Circle

Turning Dimensions – Aisle Width235 in (597 cm)
Turning Dimensions – Clearance Radius358 in (909 cm)
Turning Dimensions – Inside Radius174 in (442 cm)
Turning Dimensions – SAE Turning Radius340 in (864 cm)


Center Axle – empty15300 lbs (6,940 kg)
Center Axle – loaded53991 lbs (24,490 kg)
Front Axle – empty43585 lbs (19,770 kg)
Front Axle – loaded56593 lbs (25,670 kg)
Rear Axle – empty14749 lbs (6,690 kg)
Rear Axle – loaded53440 lbs (24,240 kg)
Total Empty73634 lbs (33,400 kg)
Total Loaded90389 lbs (41,000 kg)
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