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Engine ModelCat® C15
Engine Power - VR Engine - ISO 14396:2002401 HP (299 kW)
Nominal Payload Capacity44092 lb (20000 kg)
Bore5.4 in (137.2 mm)
The R3000H underground loader is designed to meet the challenges of the most demanding underground mining applications. Compact design with agile performance, rugged construction and simplified maintenance ensures excellent productivity, long life and low operating costs.<br>Engineered for performance, designed for comfort, built to last.


Engine ModelCat® C15
Engine Power - VR Engine - ISO 14396:2002401 HP (299 kW)
Nominal Payload Capacity44092 lb (20000 kg)
Bore5.4 in (137.2 mm)
Stroke6.8 in (171.5 mm)
Displacement927.6 in³ (15.2 l)
Static Tipping Load - Straight Ahead - Lift Arms Horizontal104199 lb (47264 kg)
Breakout Force - SAE61773 lb (28020 kg)
Raise8.8 s (8.8 s)
Dump1.85 s (1.85 s)
Lower, Empty, Float Down3.54 s (3.54 s)
Total Cycle Time14.2 s (14.2 s)
Axle Oscillation8 ° (8 °)
Articulation Angle42.5 ° (42.5 °)
Forward - 13 mile/h (4.9 km/h)
Forward - 25.7 mile/h (9.1 km/h)
Forward - 310.2 mile/h (16.4 km/h)
Forward - 417.5 mile/h (28.2 km/h)
Reverse - 14.1 mile/h (6.6 km/h)
Reverse - 27.1 mile/h (11.5 km/h)
Reverse - 312.7 mile/h (20.5 km/h)
Reverse - 419.4 mile/h (31.3 km/h)
Tire Size35/65 R33
StandardsRollover Protective Structure (ROPS)/Falling Object Protective Structure (FOPS) Certified Cab
Gross Power - SAE J1995401 HP (299 kW)
Dump Bucket - 1 - Standard Bucket11.6 yd³ (8.9 m³)
Dump Bucket - 212.4 yd³ (9.5 m³)
Inner Clearance Radius**127.8 in (3247 mm)
Rated Power1800 r/min (1800 r/min)
Operating Mass*128448 lb (58263 kg)
Note**Clearance dimensions are for reference only.
Outside Clearance Radius**296.7 in (7536 mm)
Engine Crankcase9 gal (US) (34 l)
Front Differential and Final Drives - With Axle Oil Cooling System42 gal (US) (159 l)
Rear Differential and Final Drives - With Axle Oil Cooling System44.1 gal (US) (167 l)
Light Material Bucket15.2 yd³ (11.6 m³)
Operating Mass + Rated Payload*172540 lb (78263 kg)
Bucket Capacities8.9-11.6 m³ (11.6-15.2 yd³)
Static Tipping Full Turn Ahead Lift Arms Horizontal88191 lb (40003 kg)
Operating Mass + Rated Payload* - Front Axle125187 lb (56784 kg)
Operating Mass* - Front Axle54558 lb (24747 kg)
Operating Mass* - Rear Axle73853 lb (33499 kg)
Note (4)Optional Ventilation Reduction package available.
Note*Calculated weight.
Operating Mass + Rated Payload* - Rear Axle47316 lb (21462 kg)
Gross Machine Mass180779 lb (82000 kg)
Engine Power - Tier 3 Engine - ISO 14396:2002401 HP (299 kW)
Note (3)No engine derating required up to 3050 m (10,006 ft) altitude for equivalent Tier 3 engines, and 3506 m (11,502 ft) for VR engines.
Note (2)All rating conditions are based on ISO/TR 14396:2002, inlet air standard conditions with a total barometric pressure of 100 kPa (29.5 in Hg), with a vapor pressure of 1 kPa (0.295 in Hg), and 25° C (77° F). Performance measured using fuel to EPA specifications in 40 CFR Part 1065 and EU specifications in Directive 97/68/EC with a density of 0.845-0.850 kg/L @ 15° C (7.05-7.09 lb/gal @ 59° F) and fuel inlet temperature 40° C (104° F).
Note (1)Power ratings apply at a rated speed of 1,800 rpm when tested under the reference conditions for the specified standard.
Note (5)Optional engine with emissions equivalent to U.S. EPA Tier 3 and EU stage IIIA is also available.
Dump Bucket - 313.7 yd³ (10.5 m³)
Rear Differential and Final Drives33.5 gal (US) (127 l)
Front Differential and Final Drives31.4 gal (US) (119 l)
Hydraulic Tank37 gal (US) (140 l)
Fuel Tank406.5 gal (US) (1539 l)
Cooling System19.8 gal (US) (75 l)
Transmission16.4 gal (US) (62 l)

Benefits and Features

The Cat C15 engine 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. Mechanically Actuated, Electronic Unit Injection (MEUI™) high-pressure, direct injection fuel system electronically monitors operator demands and sensor inputs to optimize engine performance. Air-to-air aftercooling provides improved fuel economy by packing cooler, denser air into cylinders for more complete combustion of fuel and lower emissions. Oil coiled pistons increase heat dissipation and promote longer piston life. The crankshaft is forged and induction hardened for long-term durability.

The Cat C15 engine features the optional Ventilation Reduction (VR) Package. The VR Package incorporates selective engine hardware and software to reduce diesel particulate matter in the engine exhaust. Engines equipped with the VR Package feature a significant ventilation rate reduction, a decrease in fuel consumption, and maintained or improved product performance. VR Package availability is subject to regional regulatory compliance. Optional engine with emissions equivalent to U.S. EPA Tier 3 and EU Stage IIIA is also available.

A Cat Diesel Particulate Filter can be used with the VR engine package. The filter compliments the VR engine by further reductions in particulate matter. Requires the use of ultra-low sulfur diesel (15 ppm) and CJ-4 low ash engine oil.

Power Shift Transmission

The Cat four-speed planetary power shift transmission is matched with the Cat C15 diesel engine to deliver constant power over a wide range of operating speeds and grades.

Robust Design

Designed for rugged underground mining conditions, the proven planetary power shift transmission is built for long life between overhauls.

Torque Converter Lockup Clutch

Combines maximum rimpull while in torque converter drive with the efficiency and performance of direct drive when the lockup clutch is engaged. The lockup clutch delivers more power to the wheels for superior power train efficiency.

Electronic Auto Shift Transmission

The electronic auto shift transmission increases operator efficiencies and optimizes machine performance. The operator can choose between manual or auto shift modes.

Transmission Neutralizer

The operator can engage the service brakes and neutralize the transmission, maintaining high engine rpm for full hydraulic flow, enhancing digging and loading functions.

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.

Hydraulic System

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

Cat Hydraulic Hose

Field proven Cat high pressure XT™ hydraulic hoses are 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.

Optional Ride Control

The optional ride control 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 speeds above 5 km/h (3 mph) during load and carry operations.

Frame Design

The frame is engineered to withstand extreme forces generated during loading and tramming cycles. Precision manufacturing process ensures all structures are consistently built to high quality. Deep penetration and consistent welds throughout the frame ensures structures are solidly fused to provide sturdy platform for the linkage and the axles. The design and manufacturing quality of Cat LHD frames have been proven by our customers, many of whom reuse frames during machine rebuilds to get 2nd and 3rd lives out of their LHD’s.


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.

Sealed Pins

Sealed colleted pins are fitted to all major 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.

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. Heavy duty steel lift arms with cast steel cross tube ensures extreme loads encountered during loading and tramming are efficiently dissipated for long service life.

The 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 fatigue.

Protective Structure

Integral to the cab and frame, the resiliently mounted Roll Over Protective Structure (ROPS) and the Falling Objects Protective Structure (FOPS), isolates 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. Air conditioning provides filtered, pressurized, temperature-controlled air for a more comfortable working environment.

STIC™ Steering and Transmission Integrated Control

STIC provides effortless control of the machine by a single controller. Simple side-to-side motion articulates the machine. Directional shifting (forward/neutral/reverse) is controlled using a three position rocker switch. The thumb operated buttons control gear selection.

Monitoring System

Cat Electronic Monitoring System (Cat EMS) continuously provides critical machine data to keep the machine performing at top production levels.


Cat LHD buckets deliver unmatched productivity and structural reliability to help lower your cost-per-ton. Buckets are available in a range of sizes to suit most material types and densities.

Optional Wear Packages

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

Optional Cutting Edges

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

An additional weld on GET option is the Cat weld-on GET. Available weld-on GET offers more wear material to maximize system wear life and bucket protection. Downtime is also reduced by an even wear rate between corners and edge segments, allowing both to be replaced at the same time.

The Cat Bolt-on Half Arrow (BOHA) GET System is another available GET option, designed for extreme conditions in abrasive environments. This system provides a longer component life and a highly reduced replacement time compared to Weld-on systems, allowing the machine to go back in production quicker.

Cat Mechanically Attached Shrouds (MAS) are also available on the R3000H buckets to provide a non weld on option for hardware selection to better suit your application.

The MAS can be further protected with the installation of the Cat Mechanically Attached Wear Plates System (MAWPS) to protect the bucket base and cutting edge.

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, power train 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

Fluid level checks are made easier with sight gauges.


Caterpillar Electronic Technician (Cat 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 covered for protection. Wires are color and number coded for easy diagnosis and repair.

Scheduled Oil Sampling

S·O·SSM helps avoid minor repairs becoming major ones.

Dealer Capability

Cat dealers will provide the level of support you need, on a global scale. Dealer expert technicians have the knowledge, experience, training and tooling to handle your repair and maintenance needs, when and where you need them.

Product Support

When Cat products reach the field, they are supported 24/7 by a worldwide network of reliable and prompt parts distribution facilities, dealer service centers, and technical training facilities to keep your equipment up and running.

Service Support

Cat equipment is designed and built to provide maximum productivity and operating economy throughout its working life. Cat dealers will be with you every step of the way with its unsurpassed worldwide parts support, trained technicians and customer support agreements.

Technology Products

Cat dealers offer a range of advanced technology products designed to improve efficiency, productivity and lower costs. VIMS™ Gen 3 and Command for Underground options available from factory.


Repair or rebuild? Your Cat dealer can help you evaluate the costs so you can make the right choice.

Product Safety

Caterpillar has been and continues to be proactive in developing mining machines that meet or exceed safety standards. Safety is an integral part of all machine and systems designs.

Engine Shut Off Switch

A secondary engine shutoff switch is located at ground level.

Integral ROPS Cab

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

Brake Systems

Four corner oil-cooled braking system provides excellent control. The service brake system is actuated by modulated hydraulic pressure, while the parking break function is spring applied and hydraulic released. This system assures braking in the event of loss of hydraulic failure.

Standard Safety Features

Anti-skid upper deck surfaces, lower cab light, ground level compartment sight glasses, increased visibility, 3-point access to cab and machine, push out safety glass, suspension seat, inertia reel retractable seat belt, bucket control group safety pins, hot and cold side of engine, articulation lock, hinged belly guards.


For more complete information on safety, please visit

Standard Equipment

  • Tires Arrangements: Tires Must Be Selected From the Mandatory Attachments Section, Choose Between:
    – Tire, 35/65 R33, VSNT, Bridgestone
    – Tire, 35/65 R33, VSDL, Bridgestone
  • Rims (set of four):
    – Five Piece, Tubeless
  • Alarm, Reversing
  • Alternator, 95 Amp
  • Battery Disconnect Switch, Ground Level
  • Batteries, Low Maintenance
  • Diagnostic Connector
  • Engine Shutdown Switch
  • Lighting:
    – External, Front, Rear, Halogen
    – Stop, Dual, Halogen
  • Receptacle Group, Auxiliary Start
  • Starter, Electric, 24-Volt
  • Starting and Charging System
  • Automatic Brake Application (ABA)
  • Cab Enclosed:
    – ROPS/FOPS Certified
    – Air Conditioning
    – Cab Pressurizer and Filter
    – Dome Light
    – Heater
    – Radio Ready Compartment for Radio and Speakers
    – Salt Resistant Air Conditioner
  • Caterpillar Electronic Monitoring System (CEMS), (dash instrumental panels)
  • Horns, Electric
  • Instrumentation/Gauges:
    – Speedometer/Tachometer
    – Fuel Level
    – Hydraulic Oil Temperature
    – Engine Coolant Temperature
  • Operator Presence System
  • Light, Warning, Residual Brake
  • Low Hydraulic Level Warning
  • Pilot Hydraulic Implement Controls (single joystick)
  • Seat:
    – Seat, Suspension, Vinyl
  • Seat Belt, Retractable
  • Brakes, Full Hydraulic Enclosed Wet Multiple-Disc Spring Applied, Fluid Released (SAFR™)
  • Engine:
    – Cat C15 6 Cylinder Diesel
    – Air-To-Air Aftercooler (ATAAC)
  • Exhaust:
    – Particulate Filter, Flow Thru
    – Particulate Filter, Wall Flow
  • Filter, Engine, Remote Mounted
  • Fuel Adapters:
    – Standard Fill, Dual, Rubber Coated, Double Steel Braided Fuel Lines
  • Fuel Priming Aid
  • Park Brake Switch Engagement, Choose Between:
    – Push to Apply
    – Pull to Apply
  • Precleaner, Engine Air Intake
  • Torque Converter with Automatic Lock-Up Clutch
  • Transmission, Automatic Planetary Powershift (4F/4R)
  • Transmission Neutralizer
  • Windows:
    – Single Pane
  • Brake Axle Cooling
  • Brake Light
  • Cap, Radiator, Manual Release
  • Catalytic Exhaust Purifier/Muffler
  • Dump Bucket (8.9 m3/11.6 yd3)
  • Bucket Lip:
    – Modular Weld-On
    – Lip Weldings – Full Weld Edge or Tack Weld Edge and Corners
  • Decals, International Picto Graphics
  • Fenders, Front, Rear
  • Firewall
  • Fuel Systems:
    – Dual Fuel Tanks
    – Fuel System Manual Shut Off Taps
  • Guards, Engine and Transmission
  • Handholds (Access On/Off Top Deck)
  • Lift Arm Positioner for Return to Dig
  • Radiator Grill, Swing Out
  • Service Oil Sample
  • Valve, Drain, Transmission Oil Filter
  • Valve, Hydraulic, Standard

Optional Equipment

  • Engine Options:
    – Engine, Ventilation Reduction (VR)
    – VR Engine, Flow Thru Ready
    – Engine, Tier 3
  • Exhaust:
    – Exhaust, Purifier, Muffler
  • Fuel Adapters:
    – Standard Fill, Dual, Stainless Steel Covered, Single Braided Fuel Lines
    – Fast Fill, Dual, Rubber Coated, Double Steel Braided Fuel Lines
    – Fast Fill, Dual, Stainless Steel Covered, Single Braided Fuel Lines
  • Secondary Steering System
  • Battery Disconnect Switch, In Cab
  • Lighting:
    – Cat LED Worklights
  • Camera, Color Rear Facing
  • Duct, Air, Flow Diverter
  • Idle Timer (enclosed cab)
  • Instrumentation/Gauges:
    – Brake Pressure
  • Seat:
    – Seat, Suspension, Tee, Vinyl
    – Seat, Suspension, Air, Vinyl
    – Seat Cover
  • Command for Underground*
  • Vital Information Management System (VIMS) Gen 3
  • Payload System, Loadrite
  • Remote Control Interface (excludes Transmitter and Receiver) – RCT
  • *Please consult with your Regional Commercial or Technology Representative prior to upgrading your machine to Command for Underground.
  • Rim Identification Numbering
  • Spare Rim, Tubeless
  • Brake release arrangements:
    – Recovery hook
    – Recovery bar
  • Buckets:
    – Various Sizes, Dump (9.5 m3/12.4 yd3, 10.5 m3/13.7 yd3)
    – Light Materials, Dump (11.6 m3/15.2 yd3)
    – Light Materials, Dump, Uninstalled (11.5 m3/15.0 yd3)*
  • Bucket Lip:
    – Bolt On Lips
    – Durilock
  • Ground Engaging Tools (GET):
    – Cutting Edge, Cat Weld-On
    – Cutting Edge, Bolt-On Half Arrow
    – Cutting Edge, Shrouds, Durilock
    – Mechanically Attached Wear Plate System (MAWPS) – Bucket Lip Protection
    – Heel Shrouds
    – Wear Bars
    – Liners
    – Overflow Guard
  • Faster Fill and Evacuation Systems:
    – Engine, Fast Fill
    – Radiator, Fast Fill
    – Hydraulic, Fast Fill
    – Transmission, Fast Fill
  • Draw Bar Attachment, Bolt-On
  • Fire Suppression System:
    – Ansul, Dry Powder
    – Foam, Water Based
  • Fluids:
    – Arctic Coolant
    – Arctic Fuel
  • Guard, Light and Window
  • Handrails
  • Lubrication System:
    – Automatic
    – Centralized
  • Mine Transfer
  • Reversible Steering
  • Reflective Tape
  • Ride Control System
  • Service Tools:
    – Collet Jacking Bolts
    – Recovery Bar
  • Vandalism Protection
  • Windows:
    – Dual Pane
  • Wear Protection Bars:
    – Cab/ROPS
    – Hydraulic Tank
    – Radiator