Compact design, high engine power, higher torque rise, stronger components and excellent maneuverability ensures the R2900G XTRA is a solid and agile performer.

Engine Model Cat® C15 ACERT™
Rated Power 1900.0 RPM
Gross Power – SAE J1995 430.0 hp
Net Power – SAE J1349 389.0 hp
Net Power – ISO 9249 386.0 hp
Net Power – 80/1269/EEC 430.0 hp
Bore 5.4 in
Stroke 6.8 in
Displacement 927.9 in3

Operating Specifications
Nominal Payload Capacity 44092.0 lb
Gross Machine Operating Weight 166614.0 lb
Nominal Payload Capacity – Tramming 44092.0 lb
Static Tipping Load Straight Ahead Lift Arms Horizontal 105306.0 lb
Static Tipping Load Full Turn Lift Arms Horizontal 89225.0 lb
Breakout Force (SAE) 60298.0 lb

Empty 122522.0 lb
Front Axle 50728.0 lb
Rear Axle 71793.0 lb
Loaded 166614.0 lb
Front Axle 120363.0 lb
Rear Axle 46251.0 lb

Bucket Capacities
Bucket Capacity - Std. 11.6 yd3
Bucket Width (Over cutting edge) 132.0 in
Bucket Capacity - Optional 13.7 yd3
Bucket Capacity - Optional 15.2 yd3

Hydraulic Cycle Time
Raise 9.2 Seconds
Dump 3.4 Seconds
Lower, Empty, Float Down 3.1 Seconds
Total Cycle Time 15.7 Seconds

Turning Dimensions
Outside Clearance Radius 295.7 in
Inner Clearance Radius 129.5 in
Axle Oscillation 8.0 Degrees
Articulation Angle 42.5 Degrees

Forward 1 3.1 mph
Forward 2 5.5 mph
Forward 3 9.4 mph
Forward 4 15.7 mph
Reverse 1 3.9 mph
Reverse 2 6.8 mph
Reverse 3 11.6 mph
Reverse 4 16.4 mph

Tire Size 35/65 R33** L5

Brakes ISO3450, AS2958.1, CAN-CSA424.30-M90
Cab/FOPS EN13627
Cab/ROPS EN13510

Overall Tire Width 126.0 in
Overall Width 136.7 in
Tunnel Clearance Width 196.9 in
Height to Top of ROPS 117.6 in
Height to Top of Hood 93.4 in
Overall Height - Bucket Raised 245.5 in
Bucket Pin Height at Max Lift 178.8 in
Dump Clearance at Max Lift 213.8 in
Overall Length (Tramming) 436.4 in
Ground Clearance 18.4 in
Wheelbase 148.8 in
Dump Angle at Max Lift 42.0 Degrees
Centerline of Front Axle to Centerline of Hitch 74.4 in
Centerline of Back Axle to Centerline of Hitch 74.4 in
Length - Rear Axle to Bumper 140.6 in
Overall Length (Digging) 453.7 in
Digging Depth 2.5 in.
Tunnel Clearance Height 177.2 in.

Service Refill Capacities
Front Differential and Final Drives (with Axle Oil Cooler) 159.0 gal
Rear Differential and Final Drives (with Axle Oil Cooler) 167.0 gal
Secondary Fuel Tank (If Equipped) 150.8 gal
Cooling System 19.8 gal
Engine Crankcase with Filter 9.0 gal
Front Differential and Final Drives 31.4 gal
Fuel Tank 225.6 gal
Hydraulic Tank 37.0 gal
Rear Differential and Final Drives 33.5 gal
Transmission 16.4 gal

Power Train - Engine
The Cat 3406E diesel engine delivers the power and reliability necessary to perform in the most demanding underground mining applications.

The six cylinder, four-stroke, turbocharged Cat 3406E EUI ATAAC diesel engine is precisely engineered and stringently tested to maintain a tradition of quality. It does it all with profit-boosting performance, heavy duty durability and reliability, built-in serviceability, excellent fuel economy and low emission levels.

High Torque Rise
Provides unequalled lugging force while digging, tramming and traversing steep grades. Torque rise effectively matches transmission shift points for maximum efficiency and fast cycle times.

Electronic Control Module (ECM)
ECM utilizes advanced engine management software to monitor, control and protect the engine utilizing self-diagnosing electronic sensors. The computerized system senses operating conditions and power requirements and adjusts engine for peak performance and most efficient operation at all times.

Turbocharged and Aftercooled
Air-to-air aftercooling provides improved fuel economy by packing cooler, denser air into cylinders for more complete combustion of fuel and lower emissions. The turbocharger enhances performance and efficiency.

Electronic Unit Injection
The electronically controlled unit injection fuel system senses operating conditions and regulates fuel delivery for optimum fuel efficiency. The proven high-pressure fuel system provides improved response times and more efficient fuel burn with lower emissions and less smoke.

Oil cooled pistons increase heat dissipation and promote longer piston life.

Cylinder Liners
Full-length water-cooled cylinder liners provide maximum heat transfer.

The crankshaft is forged and induction hardened for long-term durability.

Modular radiator with swing-out grill provides easy access for cleaning or repair. Built in sight gauge allows for quick, safe coolant level checks.

Power Train - Transmission
Designed for durability, the Cat power shift transmission delivers smooth, responsive performance and reliability in tough conditions.

Power Shift Transmission
The Cat four-speed planetary power shift transmission is matched with the 3406E diesel engine to deliver constant power over a wide range of operating speeds.

Final Drives
Cat final drives work as a system with the planetary power shift transmission to deliver maximum power to the ground. Built to withstand the forces of high torque and impact loads, double reduction final drives provide high torque multiplication to further reduce drive train stress.

Heavy duty axles are built rugged for long-life in the most demanding environments.

Fully enclosed oil immersed disc brakes incorporate independent service and parking brake pistons. Hydraulic actuated independent circuits provide improved performance and reliability.

Electronic Technician
ET service tool provides service technicians with easy access to stored diagnostic data through Cat Data Link to simplify problem diagnosis and increase availability.

Cat hydraulics deliver the power and control to keep material moving.

Hydraulic System
Powerful Cat hydraulics deliver exceptional digging and lifting forces and fast cycle times.

Lift and Tilt System
High hydraulic flow rates provide fast hydraulic cylinder response and powerful lift forces. Large-bore lift and tilt cylinder delivers exceptional strength, performance and durability.

Pilot Controls
Low effort, pilot operated joystick implement control with simultaneous lift and tilt functions optimizes operating efficiency. Optional circuit controls enable ejector bucket to be controlled from switch on joystick.

Steering System
STIC™ control system integrates steering and transmission into a single controller for maximum responsiveness and smooth control.

Optional Ride Control
Automatic Ride Control enhances machine ride and performance at speeds above 5 km/h (3 mph).

Cat Hydraulic Hose
Field proven Cat high pressure XT hydraulic hoses is exceptionally strong and flexible for maximum system reliability and long life in the most demanding conditions. Reusable couplings with O-ring face seals provide superior, leak free performance and prolong hose assembly life.

Designed for maximum strength and durability in the harshest operating environments.

Frame Design
The frame features robust structural components for outstanding durability in the toughest loading conditions. Caterpillar integrates advanced processes in the design and manufacture of Cat frames and structures. Computer modeling and Finite Element Analysis (FEA) are used extensively throughout design.

Z-Bar Loader Linkage
Proven Z-Bar loader linkage geometry generates powerful breakout force and an increased rack back angle for better bucket loading and material retention.

Sealed Pins
Sealed colleted pins are fitted to all bucket and lift arm hinge points for longer pin and bushing life. This reduces maintenance costs and extends service intervals. The sealed joints retain lubrication and prevent contaminant entry.

Spread hitch design widens the distance between upper and lower hitch plates to distribute forces and increase bearing life. Thicker hitch plates reduce deflection. The wide opening provides easy service access. Upper and lower hitch pins pivot on roller bearings to distribute horizontal and vertical loads over a greater surface area. Shim adjusted preload reduces maintenance time. An on-board steering frame lock pin is fitted to prevent articulation during maintenance and service.

Operator Station
Setting a new industry standard for comfort and efficiency.

Ergonomic Layout
The R2900G XTRA operator station is ergonomically designed for total machine control in a comfortable, productive and safe environment. All controls, levers switches and gauges are positioned to maximize productivity and minimize operator error.

Pilot Controls
Low-effort pilot operated joystick controls integrate steering, transmission and implement functions for smoother, faster cycles with less operator fatigue.

Dual-Pedal Braking
Dual brake pedals function as a brake and a transmission neutralizer so the operator can maintain high engine rpm for full hydraulic flow and fast cycle times.

Protective Structure
Integral to the cab and frame, the Rollover Protective Structure (ROPS) is resiliently mounted to the frame to isolate the operator from vibration for a more comfortable ride.

Optional Enclosed Cab
Optional sound-suppressed ROPS cab provides a quiet, secure working environment. Large window openings offer excellent visibility in all directions. Enclosed design provides fresh, pressurized, temperature-controlled air circulation with air-conditioned comfort and a more comfortable working environment. The system uses environmentally friendly R134a refrigerant.

Optional Ride Control
The system uses a nitrogen filled oil accumulator in the hydraulic lift circuit to act as a shock absorber for the bucket and lift arms. The lift arm and bucket response to movement is dampened over rough ground, reducing fore and aft pitch, improving cycle times and load retention. A smoother, more comfortable ride gives operators the confidence to travel at higher speeds during load and carry applications.

Suspension Seat
Suspension seat provides optimal driving position and enhances operator comfort, all shift long.

Monitoring System
Caterpillar Monitoring System (CMS) continuously provides critical machine data to keep the machine performing at top production levels. A warning system alerts the operator of immediate or impending problems with engine oil pressure, parking brake engagement, brake oil pressure, electrical system, low fuel, hydraulic oil temperature, coolant level/temperature, transmission oil temperature and impending brake application (optional).
  • Gauges - display engine coolant temperature, transmission oil temperature, hydraulic oil temperature, and fuel tank level.
  • Tachometer/speedometer - displays engine speed, ground speed, gear indicator, and machine direction.
  • Digital Display - "Normal" mode displays choice of hour meter, odometer or digital tachometer. "Service" mode displays operating parameters, diagnostic codes and out-of-range gauge readings.

Cat buckets provide the flexibility to match the machine to the material and conditions.

Aggressive Cat bucket designs deliver unmatched productivity in the most demanding applications. Underground mining buckets are designed for optimal loadability and structural reliability to help lower your cost-per-ton.

Bucket Selection
Cat underground loader buckets are available in two styles to meet a range of loading, hauling and dumping conditions.
  • Dump buckets
  • Ejector buckets

Bucket Capacities
Buckets are available in a range of sizes and capacities to suit most material types and densities.

Wear Packages
Weld-on wear plates in high wear areas are standard. Additional wear packages, including sacrificial wear strips and Cat heal shrouds protect the edges from damage and reduce the need for costly bucket rebuilds.

Cutting Edges
Cat half arrow and cast half arrow cutting edges extend bucket life in high wear applications.

Less time spent on maintenance means more time being productive.

Service Access
Easy access to daily service points simplifies servicing and reduces time spent on regular maintenance procedures.

Ground-Level Access
Allows convenient servicing to all tanks, filters, lubrication points and compartment drains.

Air Filters
Radial seal air filters are easy to change, reducing time required for air filter maintenance.

Sight Gauges
Makes fluid levels checks quick and easy.

Electronic Technician (ET) Service Tool enables quick electronic diagnosis of machine performance and key diagnostic data for effective maintenance and repairs.

Sealed Electrical Connectors
Electrical connectors are sealed to lock out dust and moisture. Harnesses are braided for protection. Wires are color and number coded for easy diagnosis and repair.

Customer Support
Caterpillar dealers have what it takes to keep your underground mining loader productive.

Machine Selection
Make detailed comparisons of the machines under consideration before purchase. Cat dealers can estimate component life, preventive maintenance cost, and the true cost of lost production.

Look past initial price. Consider the financing options available, as well as day-to-day operating costs. This is also the time to look at dealer services that can be included in the cost of the machine to lower equipment owning and operating costs over the long run.

Your dealer is an expert at arranging affordable financing options for all Caterpillar products.

Product Support
You will find nearly all parts at your dealer parts counter. Cat dealers use a worldwide computer network to locate in-stock parts to minimize machine downtime. Save money with Cat Reman parts. Receive the same warranty and reliability as new products at a savings of 40 to 70 percent.

Litature Support
Operation and maintenance manuals are easy to use, helping you get the full value of your equipment investment.

Customer Service Agreements
Cat dealers offer a variety of product support agreements, and work with customers to develop a plan that meets specific needs. Plans can cover the entire machine, including attachments, to help protect your investments.

Customer Service Agreements
Cat dealers offer a variety of product support agreements, and work with customers to develop a plan that meets specific needs. Plans can cover the entire machine, including attachments, to help protect your investments.

Improving operating techniques can boost your profits. Your Cat dealer has training videotapes, literature and other ideas to help you increase productivity.

Repair, rebuild or replace? Your Cat dealer can help you evaluate the cost involved so you can make the right choice.

Technology Products
Cat dealers offer a range of advanced mining technology products for customers, dealers and operators designed to improve fleet efficiency, increase productivity and lower costs.

For more complete information on Cat products, dealer services, and industry solutions, visit us on the web at www.CAT.com.



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