R2900 XE (Diesel-Electric)

R2900 XE Underground Diesel-Electric LHD Loader

Built on the platform of our most popular underground loaders, the new R2900 XE is the first Cat® diesel electric underground LHD. It’s a productive, powerful, reliable machine built to meet the underground mining industry’s need for bigger payloads, faster loading and reduced emissions.
Its powerful diesel electric drive engine is EU Stage V compliant, and it offers the power to match its class-leading 18.5-tonne . The R2900 XE is highly productive, with smooth and quick machine responses combined with improved digging and tramming performance. Employing electric drive components reduces fuel burn and improves productivity — helping mines reduce greenhouse gas emissions and carbon footprint.


  • Improvements in visibility, with lighting and camera coverage, including optional side and rear view cameras with color display, auto lights (high and low beam), auto directional switching and auto boom lights on-and-off functions.
  • Factory-ready for fire suppression, dedicated canister area estate and multiple fire suppression activation points, including from within the cab.
  • Improved access and egress with anti-slip treads on all walking surfaces, fold down handrail system with full coverage and two in cab emergency exits.
  • Operator Present System, which protects the machine and operator from uncontrolled machine movements, with hydraulic system neutralization and door sensor. Tire pressure monitoring system is also available.
  • Safer service with service area located on cold side of engine, thermal protection on aftertreatment components, integrated lock-out/tag-out points, front linkage pins for locking the lift arms in place, and bolt-on tow hooks.


  • Rollover Protective Structure (ROPS) and Falling Objects Protective Structure (FOPS) are resiliently mounted to the frame to isolate the operator from vibration for a more comfortable ride.
  • The operator present system helps ensure the safety of anyone working in, on or around the machine by preventing machine motion with no operator in the cab.
  • The enclosed cab design provides fresh, pressurized, temperature controlled air circulation with air conditioning for a more comfortable working environment.
  • Ride Control System that smooths out the ride on uneven ground, smooth controlled directional shifts, reduced driveline shocks, and hydraulically cushioned bucket and boom cylinder stops.
  • All controls, levers, switches and gauges are positioned to maximize productivity and minimize fatigue. STIC™ Steering and Transmission Integrated Control provides maximum responsiveness and control that combines directional selection, virtual gears and steering into a single lever.
  • A two pedal design with improved spacing and position enables better foot control. Improved high and low beam lights offer autodirectional switching and automatic on and off functions.
  • The R2900 XE’s hydraulic system also improves operator control and boosts productivity. Low-effort electric-over-hydraulic joystick implement controls feature simultaneous lift and tilt functions to optimize operating efficiency.


  • The R2900 XE delivers a 20% increase* in productivity thanks to a number of new and improved features.
  • An 18.5 tonne (20.4 tonne) payload results in faster load times, making the R2900 XE a 3- or 4-pass match with the Cat® AD63 truck for greater efficiency and higher productivity.
  • The R2900 XE features 52% quicker* acceleration and improved machine response, providing operators greater control over the machine. It can accelerate from 0-24 km/h in 6.4 seconds, a 52% improvement over the R2900G, and achieves 7% higher*speed on grade.
  • The R1700-style lift arm can reach higher, making it faster and easier to load larger trucks, and improved hydraulic performance makes loading faster and easier. These improvements and more result in reduced cycle times, more material moved and lower cost per tonne. Autodig helps new operators be productive faster and reduces fatigue for all operators.
  • Productivity is enhanced through the R2900 XE’s hydraulic system. Variable piston pumps deliver higher flow rates for faster hydraulic cylinder cycle times and powerful lift forces. Large-bore lift and tilt cylinders deliver exceptional strength, performance and durability.
*Compared to R2900G


  • The R2900 XE employs a high efficiency electric drive system and is powered by a quiet, reliable and durable Cat® C15 engine.
  • With greater than 31% increased fuel efficiency* and a variety of emission reduction and aftertreatment options — including an EU Stage V configuration and diesel particulate filtration — it provides the power you need while also reducing ventilation costs and helping you meet your sustainability goals. RPM, fuel burn, heat generation and exhaust emissions have all been reduced, while offering an increase in power.
  • Extended service intervals reduce hydrocarbon use and increases availability.
  • Proven switched reluctance (SR) electric drive system that is Caterpillar designed, integrated, validated and supported for reliability, ease of cooling and high performance.
  • Thereplacement of the traditional transmission and torque convertor with electric drive, provides: reduced engine RPM, reduction in engine exhaust emissions, reduction in heat output, reduced noise levels, reduced vibrations, lower hydrocarbon use.

*Compared to R2900G


  • The R2900 XE’s bucket has been redesigned for increased strength and simplified serviceability. Wear bars can be replaced more easily, and the design of the bucket channels stress to areas with easy-to-replace wear pads, reducing the need for welding repairs.
  • Welded, bolted or hammerless Ground Engaging Tools (GET) to meet site-specific needs and fit with site maintenance strategy.
  • Bolt-On Half Arrow (BOHA) GET for bucket edges, which offer more wear material than standard weld-on GET and feature a bolt-on design that enables fast and easy removal and replacement.
  • New Durilock Lip Shroud system that features hammerless installation and maintenance-free retention of GET, with three interchangeable shroud styles to meet specific applications.
  • Cat Bucket Pro App, which provides real-time data on GET performance to help you plan maintenance, manage inventory and understand yourcost-per-ton.


  • By eliminating castings and reducing weight, we’ve increased the life and strength of the frame without sacrificing performance.
  • The R2900 XE features a new axle design that offers increased life, higher availability and a number of serviceability features and improvements.
  • New, larger wheel bearings with optimized positioning and flange-mounted rims last longer and are easier to service.
  • Four planet gear final drive with larger gear sets.
  • The updated brake design offers increased capacity, remote mounted brake bleeders, easier service access and extended brake life.
  • The traction control system reduces tire spin, increasing tire life and reducing consumable costs.


  • Electric drive system with fewer moving parts and parts than traditional torque converter and mechanical transmission systems extended maintenance intervals over mechanical power trains.
  • Improved service access, with swing-open radiator guard, with filters and key service tasks grouped into a centralized service section.
  • Added remote mounted test ports for testing and troubleshooting. Brake bleeder points in centralized locations.
  • Fuel tank that bolts in to the frame, allowing it to be easily cleaned or replaced if damaged as it bolts in to the frame.
  • Modular designed components for easier removal and installation at time of repairs.


  • Factory-ready for remote operation and can be equipped with the industry-proven Cat® MineStar™ Command for underground, which offers line-of-sight remote control; teleremote operation; co-pilot, which requires only directional input from the operator; and fully autonomous operation, including Autodig.
  • High-resolution dash displays with 11 language options for access to real-time system information.
  • In-cab machine health monitoring visible on the digital display and monitored through the Cat Product Link™ Elite (PLE) system, including integrated MineStar Health offerings that enable proactive maintenance services and predictive equipment analysis.
  • Optional MineStar Fleet for underground, which provides real-time visibility to cycle time,payload, machine position and other key operational parameters.
  • Optional MineStar Detect, which uses a proximity detection system coupled with a revolutionary communication and tracking network to prevent incidents and track people and machines in real time.


  • Ongoing research and development into engine compatibility with diesel fuel blended with lower-carbon intensity fuels such as biofuels and renewable fuels, plus power options like electrification.
  • Cat Rebuild and Cat Reman programs, which preserve raw materials, conserve energy and reduce emissions.
  • Retrofits and upgrades for older machines — to incorporate efficiency improvements and emission reductions, and to keep them in production longer to conserve energy and minimize the need for raw materials.

Standard Equipment

  • 12V Power Supply in Cab
  • Alternator, 150-amp
  • Auxiliary Start Receptacle
  • Battery Disconnect Switch, Ground Level
  • Diagnostic Connector
  • Electric Starting, 24V
  • E-stop (Illuminated):
    – Rear Right Hand Side
    – Rear Left Hand Side
  • External LED Lighting System, Front, Rear, Stop – Brake – Tail Light Dual LED
  • Low Maintenance Batteries
  • Operator’s Station, Enclosed ROPS/FOPS:
    – Air Conditioning
    – Cab Pressurizer and Filter
    – Radio Ready Compartment for Radio and Speakers
  • Cup Holder and Storage Compartments
  • Cat® Color Multi Purpose Display (CMPD)
  • Electric Horns
  • Guard, Rear Side Quarter Window
  • Operator Presence System (Auto Park Brake)
  • Door Latch Monitoring
  • Electro-Hydraulic Implement Controls, Single Joystick
  • Push Button Panel for Lights
  • Seats:
    – Suspension Seat, Vinyl
  • Adjustable Arm Rest and Knee Pads
  • Seat Belt Monitoring
  • Retractable Seat Belt
  • STIC Steering
  • Secondary Steering
  • Cat C15 Air-to-Air Aftercooler (ATAAC) Diesel Engine, 6-Cylinder
  • Engine Options:
    – Engine, Tier 2 Equivalent
  • Catalytic Exhaust Purifier/Muffler Group
  • Cat Switched Reluctance Electric Generator and Pump Drive
  • Cat Switched Reluctance Drive Motor
  • Cat Integrated Powered Electronics
  • Brakes, Fully Hydraulic Enclosed Wet Multiple – Disc with Cooling (SAFR™)
  • Auto Retarder with Grade Control
  • Product Link Elite
  • Tire Arrangements:
    – Tire, 29.5 × R29 VSM L-5S Bridgestone
  • Flat Fold Handrails

Additional information

Offering Type

Engine Model

Cat® C15

Engine Power - Stage V Engine - ISO 14396:2002

335 kW ( 449 HP )

Engine - Bore

137 mm ( 5.39 in )

Engine - Stroke

172 mm ( 6.77 in )

Engine - Displacement

15.2 l ( 928 in³ )

Engine - Note (3)
Operating Specifications - Nominal Payload Capacity

18500 kg ( 40785 lb )

Operating Specifications - Gross Machine Mass

78089 kg ( 172157 lb )

Operating Specifications - Shipping Weight

59869 kg ( 131988 lb )

Operating Specifications - Static Tipping Load - Straight Ahead - Lift Arms Horizontal

43276 kg ( 95407 lb )

Operating Specifications - Static Tipping Load - Full Turn - Lift Arms Horizontal

37598 kg ( 82889 lb )

Operating Specifications - Breakout Force - Lift (ISO)

32500 kg ( 71500 lb )

Operating Specifications - Breakout Force - Tilt (ISO)

42000 kg ( 92500 lb )

Weights - Operating Mass*

55462 kg ( 122300 lb )

Weights - Operating Mass* - Front Axle

24685 kg ( 54400 lb )

Weights - Operating Mass* - Rear Axle

30777 kg ( 67900 lb )

Weights - Operating Mass + Rated Payload*

73962 kg ( 163100 lb )

Weights - Operating Mass + Rated Payload* - Front Axle

54480 kg ( 120100 lb )

Weights - Operating Mass + Rated Payload* - Rear Axle

19482 kg ( 43000 lb )

Transmission Type

Cat switched reluctance electric drive

Hydraulic System - Lift/Tilt - Lift/Tilt System - Circuit

Electro Hydraulic Controls

Hydraulic System - Lift/Tilt - Lift/Tilt System - Pump

Variable Displacement Piston

Hydraulic System - Lift/Tilt - Maximum Flow

479 l/min ( 264 gal/min )

Hydraulic System - Lift/Tilt - Relief Valve Setting - Main

31700 kPa ( 4597 psi )

Hydraulic System - Lift/Tilt - Lift Cylinder - Bore

190 mm ( 7.48 in )

Hydraulic System - Lift/Tilt - Lift Cylinder - Stroke

1011 mm ( 39.8 in )

Hydraulic System - Lift/Tilt - Tilt Cylinder - Bore

270 mm ( 10.63 in )

Hydraulic System - Lift/Tilt - Tilt Cylinder - Stroke

458 mm ( 18.03 in )

Hydraulic Cycle Times - Raise

9.0 s ( 9.0 s )

Hydraulic Cycle Times - Dump

2.8 s ( 2.8 s )

Hydraulic Cycle Times - Lower, Empty, Float Down

3.5 s ( 3.5 s )

Hydraulic Cycle Times - Total Cycle Time

15.3 s ( 15.3 s )

Bucket Capacities

7.4-9.8 m³ (9.7-12.8 yd³)

Bucket Capacities - Dump Bucket - 1 - Standard Bucket

7.4 m³ ( 9.7 yd³ )

Bucket Capacities - Dump Bucket - 2

8.6 m³ ( 11.2 yd³ )

Bucket Capacities - Dump Bucket - 3

9.2 m³ ( 12.0 yd³ )

Bucket Capacities - Dump Bucket - 4

9.8 m³ ( 12.8 yd³ )

Turning Dimensions - Outside Clearance Radius**

7270 mm ( 286 in )

Turning Dimensions - Inner Clearance Radius**

3391 mm ( 134 in )

Turning Dimensions - Axle Oscillation

Turning Dimensions - Articulation Angle


Tires - Tire Size

29.5 R29

Service Refill Capacities - Engine Crankcase

52 l ( 13.7 gal (US) )

Service Refill Capacities - Hydraulic Tank

338 l ( 89.3 gal (US) )

Service Refill Capacities - Front Differential and Final Drives - With Axle Oil Cooling System

140 l ( 37.0 gal (US) )

Service Refill Capacities - Rear Differential and Final Drives - With Axle Oil Cooling System

154 l ( 40.7 gal (US) )

Service Refill Capacities - Fuel Tank

660 l ( 174.4 gal (US) )

Service Refill Capacities - DEF Tank

34 l ( 9.0 gal (US) )


ISO 3471:2008 ROPS; ISO 3449:2005 FOPS

Engine - Note (1)

Power ratings apply at a rated speed of 1,600 rpm for Tier 2/Stage II model engine when tested under the reference conditions for the specified standard.

Engine - Note (2)

Power ratings apply at a rated speed of 1,600 rpm for Stage V model engine when tested under the reference conditions for the specified standard.

Engine - Note (4)

Minimal engine derating* required up to 2926 m (9,600 ft) at rated speed for Stage V engines and 3505 m (11,500 ft) for Tier 2/Stage II equivalent engines.

Engine - Note (5)

Optional DPF (Diesel Particulate Filter) Package available.

Turning Dimensions - Note

** Clearance dimensions are for reference only.

Weights - Note

* Calculated Weight.

Engine Power - Tier 2/Stage II Engine - ISO 14396:2002

333 kW ( 447 HP )

Transmission - Forward - 1st (virtual)

5.8 km/h ( 3.6 mile/h )

Transmission - Forward - 2nd (virtual)

9.5 km/h ( 5.9 mile/h )

Transmission - Forward - 3rd (virtual)

17.0 km/h ( 10.6 mile/h )

Transmission - Forward - 4th (virtual)

24.6 km/h ( 15.3 mile/h )

Transmission - Forward - 5th (virtual)

33.4 km/h ( 20.8 mile/h )

Transmission - Reverse - 1st (virtual)

6.0 km/h ( 3.7 mile/h )

Transmission - Reverse - 2nd (virtual)

10.1 km/h ( 6.3 mile/h )

Transmission - Reverse - 3rd (virtual)

18.0 km/h ( 11.2 mile/h )

Transmission - Reverse - 4th (virtual)

26.0 km/h ( 16.2 mile/h )

Transmission - Reverse - 5th (virtual)

32.9 km/h ( 20.4 mile/h )

Service Refill Capacities - Propulsion Motor/Drop Box Oil

68 l ( 18.0 gal (US) )

Service Refill Capacities - Cooling System (Engine Radiator)

95 l ( 25.1 gal (US) )

Service Refill Capacities - Cooling System (Drive Motor - secondary)

32 l ( 8.5 gal (US) )

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