789D
The Cat® 789D Mining Truck has a history of proven performance in a wide variety of applications. It delivers the lowest cost per ton in its size class, for an overall reduction in your operating costs, along with the reliability and reduced costs that come with long life — from the engine and powertrain to the components, brakes and frame. It also delivers fast speed on grade and a high production capability thanks to a payload advantage over competitive machines. The versatile 789D offers engine options to meet regulatory standards or application-specific needs such as extreme temperatures, high altitude or areas that require sound reductions. And it features
safety enhancements like diagonal stairways, wide walkways and optional powered access to protect your most important asset: your people.
safety enhancements like diagonal stairways, wide walkways and optional powered access to protect your most important asset: your people.
Gross Power - SAE J1995
2100 HP
Engine Model
Cat® 3516C HD
Rated Net Power - ISO 9249
1969 HP
Specification
Value
Gross Power - SAE J1995
2100 HP
Engine Model
Cat® 3516C HD
Rated Net Power - ISO 9249
1969 HP
Bore
6.7 in
Stroke
8.5 in
Displacement
4766 in³
Net Power
1969 HP
Gross Power
2100 HP
Emissions Rating
Fuel Optimized or EPA Tier 2 equivalent
Rated Speed
1750 r/min
Specification
Value
Engine Model
Cat® 3516B EUI
Gross Power
1900 HP
Rated Net Power - ISO 9249
1791 HP
Bore
6.7 in
Stroke
7.5 in
Displacement
4211 in³
Specification
Value
Rated Gross Machine Weight
715000 lb
Chassis Weight (37R57 Tires)
226681 lb
Chassis Weight (40R57 Tires)
233713 lb
Nominal Rated Payload
214 ton (US)
Specification
Value
Body Weight
60331 lb
Specification
Value
Standard MSD Body (SAE 2:1)
170 yd³
Standard X Body (SAE 2:1)
161 yd³
Standard Dual Slope Body (SAE 2:1)
141 yd³
Standard Combi Body (SAE 2:1)
200 yd³
Standard Gateless Coal Body (SAE 2:1)
250 yd³
Standard HP Body (SAE 2:1)
188 yd³
Note
Refer to the Cat Mining Truck Optimized payload policy for maximum gross machine weight limitations.
Specification
Value
Forward - 1
7.8 mile/h
Forward - 2
10.6 mile/h
Forward - 3
14.4 mile/h
Forward - 4
19.4 mile/h
Forward - 5
26.3 mile/h
Forward - 6
35.5 mile/h
Reverse
7.3 mile/h
Top Speed - Loaded
35.5 mile/h
Specification
Value
Differential Ratio
2.35:1
Planetary Ratio
10.83:1
Total Reduction Ratio
25.46:1
Specification
Value
Effective Cylinder Stroke - Front
4 in
Effective Cylinder Stroke - Rear
3.5 in
Rear axle - Oscillation
±5.6°
Specification
Value
Brake Surface - Front
12662 in²
Brake Surface - Rear
20862 in²
Standards
SAE J1473 OCT90 ISO 3450:2011 - Service Brakes: Four-Corner, Wet Multi-disc, Oil Cooled, Hydraulically Actuated. Parking Brake: Four-Corner, Wet Multi-disc, Spring Applied, Hydraulically Released.
Specification
Value
Pump Flow - High Idle
193 gal/min
Relief Valve Setting - Raise
2500 psi
Body Raise Time - High Idle
18.9 s
High Idle Body Lower Time - Float
15.6 s
High Idle Body Lower Time - Power
15.6 s
Body Raise Time - High Idle Body
17.3 s
Specification
Value
Front Axle - Empty
50 %
Rear Axle - Empty
50 %
Front Axle - Loaded
33 %
Rear Axle - Loaded
67 %
Note
Weight distributions optimized with Cat body.
Specification
Value
Standard Tires
37.00-R57
Optional Tires
40.00-R57
Specification
Value
Fuel Tank - Standard
550 gal (US)
Fuel Tank - Optional
1000 gal (US)
Cooling System
192 gal (US)
Crankcase
77 gal (US)
Differential - Final Drives
154 gal (US)
Steering System
50 gal (US)
Brake Hoist System
241 gal (US)
Transmission Tank
20 gal (US)
Specification
Value
ROPS Standards
Standards
Specification
Value
Sound Standards
Standards
Specification
Value
Steering Standards
SAE J1511 OCT90 ISO 5010:2007
Steering Angle
36.07 °
Turning Diameter - Front Wheel
90.32 ft
Vehicle Clearance - Turn Circle
99.18 ft
Turning Diameter - ISO 7457:1997 (33.00R51 tires)
90.32 ft
Specification
Value
Body Weight
66376 lb
Specification
Value
Centerline Front Tire Width
17.75 ft
Centerline of Rear Dual Tire Width
15.42 ft
Dump Clearance
5.17 ft
Engine Guard Clearance
4.25 ft
Front Canopy Height
22.09 ft
Ground Clearance
4.25 ft
Height - Top of ROPS
18.25 ft
Inside Body Width
21.92 ft
Loading Height - Empty
20.17 ft
Outside Body Width
24.17 ft
Overall Canopy Width
25.5 ft
Overall Height - Body Raised
43.09 ft
Overall Length
42.5 ft
Overall Tire Width
23.33 ft
Rear Axle - Clearance
4.17 ft
Rear Axle - Tail
12.67 ft
Wheel Base
1867 ft
- The 789D delivers a faster speed on grade than competitive trucks thanks to the efficient 3500 series 16-cylinder engine and mechanical drivetrain.
- The 23% net torque rise provides unequaled lugging force during acceleration, on steep grades and in rough underfoot conditions. Torque rise effectively matches transmission shift points for maximum efficiency and fast cycle times.
- Expanded tire options allow mines to take advantage of higher speeds, particularly in flat, long-haul, high-speed applications.
- The 789D has an empty machine weight advantage, allowing it to haul more with every load, delivering a 10-15% cost per ton advantage over competitive trucks depending on application.
- Access and egress are safer thanks to the 600-mm-wide (24-in-wide) stairway and walkways, slip-resistant surfaces and hand rails, plus an optional powered access ladder.
- Superior control is delivered by a patented braking system that provides immediate, fade-resistant braking and retarding.
- The 789D is designed for excellent all-around visibility and clear sight lines, enhanced by wide-angle mirrors, a relocated air tank and grease reservoir, and Electric Start batteries stored.
- The optional Cat MineStar™ Object Detection system combines radar and camera systems to warn operators about light vehicles or stationary hazards within the immediate vicinity of their machines.
- Dumping operations are safer thanks to a body raised indicator, body retaining cable and reverse neutralizer when dumping.
- Three cab options — standard, deluxe and cold weather — allow you to select the best features for your application.
- All options offer an ergonomic layout, excellent all-around visibility, and controls, levers, switches and gauges that are positioned for ease of use.
- The cab has numerous features that enhance comfort and reduce fatigue, such as an air suspension seat, reduced vibration, automatic climate control and sound suppression.
- Time spent on regular maintenance procedures is reduce with easy access to daily service points and major components; ground-level access to tanks, filters, drains and engine shutdown; a maintenance platform that provides access to the engine engine, steering hydraulic tank and battery compartment; and an optional fast-fill service center, which enables high-speed fuel and oil exchange.
- Enhanced serviceability and 500-hour service intervals are designed to increase machine availability and productivity.
- Electric connectors are sealed to lock out dust and moisture, harnesses are braided for protection, and wires are color- coded for easy diagnosis and repair.
- Individual cylinder heads are interchangeable for easy removal and visual inspection of internal parts.
- The VIMS onboard diagnostic systems continuously monitor all critical machine functions and components to help locate faults quickly for faster repair.
- The 789D frame uses a box-section design, incorporating two forgings and 21 castings in high-stress areas with deep penetrating and continuous wrap-around welds to resist damage from twisting loads without adding extra weight. The mild steel frame provides flexibility, durability and resistance to impact loads.
- Resiliently mounted to the main frame to reduce vibration and sound, the integral ROPS is designed as an extension of the truck frame.
- Component life is enhanced thanks to the standard rear-axle continuous filtration feature. Cleaner oil helps promote lubrication that leads to longer life.
- The frame, powertrain, engine and components are built to be rebuilt — delivering multiple lives of like-new performance at a fraction-of-new price.
- Cat bodies are the best choice for the 789D. They’re designed to be an integral part of the entire vehicle system, ensuring you achieve maximum chassis life.
- The High Performance (HP) body features a lightweight, simplified and durable design that provides complete front machine coverage and extended overhead protection.
- Available in several sizes, the MSD II body is ideal for mature mines with good operational and maintenance practices. It can be lined or unlined, with a site-specific body designed to maximize performance.
- Intended for tough applications including greenfield sites and contracting mines, the Dual Slope body provides excellent load retention, maintains a low center of gravity with optimum load distribution and reduces shock loading.
- The specialty combination body for coal and coal overburden accommodates light density material while maintaining payload potential.
- We’ve designed the 789D with a number of enhancements that lessen its impact on the environment. Features like oil renewal systems and continuous rear axle filtration decrease the amount of waste contributed to the environment.
- We continue to research alternative energy sources such as biofuels and a liquefied natural gas-supplied Dynamic Gas Blending solution, and we’re implementing power options like electrification and trolley to find new ways to reduce emissions.
- Cat engines are compatible with diesel fuel blended with lower-carbon intensity fuels such as biodiesel FAME (fatty acid methyl ester). They are also compatible with renewable fuels such as HVO (Hydrotreated Vegetable Oil) and GTL (Gasto-Liquid) alternative fuels that are drop-in replacements for diesel. HVO and GTL are acceptable for use in all Cat engines at any blend level and up to 100%.
- By rebuilding machines and components, the Cat Rebuild and Cat Reman programs preserve raw materials, conserve energy and reduce emissions.
- The 789D comes with two engine options to help you meet regulatory requirements or application-specific needs. Both the Cat 3516B and 3516C EUI options deliver high power and reliability in the world's most demanding mining applications.
- The mechanical drive powertrain and power shift transmission provide unmatched efficiency and control on steep grades, in poor underfoot conditions and on haul roads with high rolling resistance.
- Application-specific capabilities are available for extreme ambient conditions, high-altitude and extra quiet applications.
- The 789D lets you select the tire offering that best matches your application, with a larger tire for flat, long, high-speed applications. Applicable hauling conditions will benefit from increased tire life or significant reduction in tire costs.
- MineStar Fleet is a fleet monitoring system that can be used to measure, manage and maximize the overall hauling operation.
- With MineStar Detect, you can equip your 789D with cameras to give your operators a better view of what's happening around their equipment—or combine cameras and radar into a system that automatically alerts operators to hazards.
- The MineStar Detect in-cab Driver Safety System intervenes when it detects fatigue or distraction
- Machine health and condition monitoring solutions enable a proactive approach to maintenance.
- MineStar Command for hauling, an autonomous hauling solution proven to increase productivity up to 30%, is offered as a retrofit kit for the 789D.
