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Surface mining hybrid wheel loader

WE1850

  • Horsepower 1 491 kW 2,000 HP
  • Operating weight 267 620 kg 590,000 lbs.
  • Bucket capacity 31 - 33 m3 40 - 43 yd3

Make your operation its most productive

When your goal is maximizing your mining operation’s productivity, it’s all about cost per ton. The versatile WE1850 is engineered to improve both sides of the equation: Lower cycle times and increased payload equates to higher productivity and more tons moved, with new multiple features designed to minimize your fuel and maintenance costs.

  • Up to a 45% fuel consumption reduction *
  • 35% CO2 reduction*
  • Up to a 10-15% TCO advantage*
  • *Compared to mechanical loaders or hydraulic excavator machines

Features and benefits

Fuel efficient SR Hybrid Drive

The SR Hybrid Drive system is fully regenerative. During braking or retarding, electrical motors become generators and feed power back into the electrical system. This allows for up to 45% less fuel consumption than comparably sized mechanical drive wheel loaders. 

Peak power on demand

The Kinetic Energy Storage System (KESS) works in concert with the SR Hybrid Drive to store significant horsepower captured from braking and direct it to supplement peak power demand. The result is fast cycle times without a commensurate increase in fuel usage. 

Larger payload option available

Built for productivity. The WE1850-3 wheel loader can center load haulage trucks with payload ratings ranging from 240 to 360 tons. 

Controls that support operator efficiency

The LINCS II network control system provides instant, real-time feedback and vital statistics, such as bucket height and angle, individual bucket payload, and total tons moved. All of it helps your operators maximize productivity by adjusting to conditions. 

Attuned to operator comfort

The spacious, environmentally controlled cab offers great visibility, a comfortable ride and room for a trainer seat. Digital joysticks give your operators easy and responsive control, while the highly adjustable, heated/cooled seat helps maximize operator comfort.

Fast, efficient maintenance

Multiple design features help keep your maintenance costs low: the integrated, patented drive system has few components resulting in longer maintenance intervals, multiple access points mean faster component change-out times and more uptime for your machine. 

Handles multiple site duties

If your operation involves frequent equipment relocations, you’ll love this loader. It can keep the pit floor clean and level without support equipment, offers outstanding mobility and travel speed, and handles berm maintenance, road repair and cutting ramps. 

Hydraulics

The closed-center hydraulic system is designed to complement the SR Hybrid Drive system. Closed-center hydraulic systems are more efficient leading to lower parasitic horsepower loads on the engine, resulting in less fuel consumption and cooler operating temperatures to promote long hydraulic component service life.

Greenhouse gas reduction (Tier 4 compliance)

The SR Hybrid Drive system efficiency gains, from the regenerative braking and the energy storage system, reduce fuel burn, which can result in a substantial CO² reduction per ton of material moved as compared to a mechanical drive.

Specifications for WE1850

Close all Expand all
US system Metric
Operating capacities, weights and dimensions
  Standard lift High lift
Bucket capacity* 32.88 m3 30.58 m3
Operating payload 58 967 kg 54 431 kg
Static tipping loads    
Straight TBD 147 211 kg
Full 45° turn TBD 128 996 kg
Operating weight 268 481 kg 269 887 kg
* Standard rock bucket based on a material density of 1 780 kg/m3
  Standard lift High lift
Bucket capacity* 43 yd3 40 yd3
Operating payload 130,000 lbs. 120,000 lbs.
Static tipping loads    
Straight TBD 324,545 lbs.
Full 45° turn TBD 284,388 lbs.
Operating weight 592,000 lbs. 595,000 lbs.
* Standard rock bucket based on a material density of 3,000 lbs./yd3
Working ranges
Engine 1 491 kW
Kinetic Energy Storage System (KESS)* 1 268 kW
Payload  
Standard 58 967 kg
High lift 54 331 kg
Bucket capacity sized to material density  
Truck match 218 - 327 tonne

*Kinetic Energy Storage System

Engine 2,000 HP
Kinetic Energy Storage System (KESS)* 1,700 HP
Payload  
Standard 130,000 lbs.
High lift 120,000 lbs.
Bucket capacity sized to material density  
Truck match 240 - 360 ton

*Kinetic Energy Storage System

Power module

Diesel power options


Cummins diesel engine Tier 1, Tier 2 or Tier 4
    Model QSK 60
16 cylinders
    Type  4-cycle turbocharged
    Rated power 1 491 kW @ 1 800 rpm

MTU Detroit diesel engine Tier 1, Tier 2  Tier 4
    Model

16V series 4000
16 cylinders

12V Series 4000
12 cylinders
    Type 4-cycle turbocharged
    Rated power 1 491 kW @ 1 800 rpm

The independent power module mounting system, consisting of the engine coupled to the SR generator, is cradled within the rear frame by a three-point isolation system.

Radiator/oil cooler module

  • Replaceable tube type, side-by-side split flow
  • Thermostatically controlled, variable speed hydraulic motor-driven, radiator-mounted fan

Exhaust system

  • Dual, low restriction mufflers with vertical, mid-hood discharge

Diesel power options


Cummins diesel engine Tier 1, Tier 2 or Tier 4
    Model QSK 60
16 cylinders
    Type  4-cycle turbocharged
    Rated power 2,000 HP @ 1,800 rpm

MTU Detroit diesel engine Tier 1, Tier 2  Tier 4
    Model

16V series 4000
16 cylinders

12V Series 4000
12 cylinders
    Type 4-cycle turbocharged
    Rated power 2,000 HP @ 1,800 rpm

The independent power module mounting system, consisting of the engine coupled to the SR generator, is cradled within the rear frame by a three-point isolation system.

Radiator/oil cooler module

  • Replaceable tube type, side-by-side split flow
  • Thermostatically controlled, variable speed hydraulic motor-driven, radiator-mounted fan

Exhaust system

  • Dual, low restriction mufflers with vertical, mid-hood discharge
Propulsion system

SR Hybrid Drive switched reluctance (SR) technology propulsion system

  • Digital microprocessor controlled traction drive
  • SR Hybrid Drive advantages include:
    • No commutator, brushes or rotor windings on SR motors or generator
    • Hybrid regenerative energy storage for improved fuel economy
    • Parts commonality - power conversion modules identical for motor and generator

Travel speed

Forward and reverse 0 - 19.31 kph (0 - 12 mph)

Generator

  • G200 SR generator
  • Switched reluctance (SR)

Traction motors

  • B60A SR motor

Planetary gearing

Model 57

  • In-line gear train mounted within the rim of the tire, transmitting power from the traction motor through the tire/rim assembly.
  • A four-stage planetary drive unit in each position
  • Total reduction 99:1 

SR Hybrid Drive switched reluctance (SR) technology propulsion system

  • Digital microprocessor controlled traction drive
  • SR Hybrid Drive advantages include:
    • No commutator, brushes or rotor windings on SR motors or generator
    • SR KESS – Kinetic Energy Storage System
    • Parts commonality - power conversion modules identical for motor and generator

Travel speed

Forward and reverse 0 - 19.31 kph (0 - 12 mph)

Generator

  • G200 SR generator
  • Switched reluctance (SR)

Traction motors

  • B60A SR motor

Planetary gearing

Model 57

  • In-line gear train mounted within the rim of the tire, transmitting power from the traction motor through the tire/rim assembly.
  • A four-stage planetary drive unit in each position
  • Total reduction 99:1 
Control system - LINCS II

LINCS II

Microprocessor based modular design Vehicle Control Unit (VCU) with monitoring and diagnostics including integrated data logging and storage.

LINCS II uses a dash mounted full color, touch screen display as the operator interface. Out-of-range conditions will cause an audible alarm along with a message screen that is color coded to indicate severity.

In addition, the touch-screen display provides repair technicians with operational data and fault messages.

LINCS II load weigh

Displays real-time load per pass, per truck and total loads

  • Memory capable of retaining months of production information
  • Capable of interfacing with radio dispatch systems for real-time monitoring

LINCS II

Microprocessor based modular design Vehicle Control Unit (VCU) with monitoring and diagnostics including integrated data logging and storage.

LINCS II uses a dash mounted full color, touch screen display as the operator interface. Out-of-range conditions will cause an audible alarm along with a message screen that is color coded to indicate severity.

In addition, the touch-screen display provides repair technicians with operational data and fault messages.

LINCS II load weigh

Displays real-time load per pass, per truck and total loads

  • Memory capable of retaining months of production information
  • Capable of interfacing with radio dispatch systems for real-time monitoring
Hydraulic system

HPD drive box

  • Pressurized, cooled, and filtered lubrication
  • Ratio 1:1

Pumps

(Maximum flow rate at 1,800 RPM)

Main Piston (4) 1 870 L/min
Steering Piston 337 L/min
Fan/blower drive Tandem piston 171/171 L/min
Accessory Piston 81 L/min
Cooling system
Circulating pump
Vane 409 L/min
Auxiliary cooling (optional) Piston 81 L/min

Valves

Main Three (3) 663 L/min
  Pump pressure 27 580 kPa
Steering One (1) 341 L/min
  Pump pressure 27 580 kPa

 

Cylinders

Double-acting, single-stage (diameter and stroke), (standard and high fit)

Hoist 381 x 2 108 mm
Bucket 318 x 1 086 mm
Steering 190 x 762 mm

HPD drive box

  • Pressurized, cooled, and filtered lubrication
  • Ratio 1:1

Pumps

(Maximum flow rate at 1,800 RPM)

Main Piston (4) 494 gpm
Steering Piston 89 gpm
Fan/blower drive Tandem piston 45/45 gpm
Accessory Piston 21 gpm
Cooling system
Circulating pump
Vane 108 gpm
Auxiliary cooling (optional) Piston 21 gpm

Valves

Main Three (3) 175 gpm
  Pump pressure 4,000 psi
Steering One (1) 90 gpm
  Pump pressure 4,000 psi

 

Cylinders

Double-acting, single-stage (diameter and stroke), (standard and high fit)

Hoist 15 x 83 in
Bucket 12.5 x 42.8 in
Steering 7.5 x 30 in
Steering and hoisting system

Steering

Steering function is controlled by a single joystick. Constant engine rpm assures full hydraulic steering response.

Articulation angle 40°
Turning radius
Standard lift 16.10 m
High lift 17.06 m

Hoist and bucket control

Hoist and bucket control functions are incorporated into a single joystick control. The proportional electro-hydraulic controlled hoist and bucket system is independent of the steering system.

Standard/high lift cycle times:  
Hoist 12.6 s
Dump 2.9 s
Float 5 s

* Estimated

Steering

Steering function is controlled by a single joystick. Constant engine rpm assures full hydraulic steering response.

Articulation angle 40°
Turning radius  
Standard lift 52 ft. 10 in
High lift 55 ft. 11 in

Hoist and bucket control

Hoist and bucket control functions are incorporated into a single joystick control. The proportional electro-hydraulic controlled hoist and bucket system is independent of the steering system.

Standard/high lift cycle times:  
Hoist 12.6 s
Dump 2.9 s
Float 5 s

* Estimated

Braking system

Primary brake system

Electric dynamic braking system is controlled from the accelerator pedal and can bring the loader to a full stop without application of mechanical brakes.

Secondary brake system

Air modulated traction motor speed disc brakes

  • Single disc and caliper on each traction motor (4)
  • Emergency fail safe brakes are spring applied in the event of air pressure loss

Parking brake system

Spring applied, air release traction motor speed disc brakes

Primary brake system

Electric dynamic braking system is controlled from the accelerator pedal and can bring the loader to a full stop without application of mechanical brakes.

Secondary brake system

Air modulated traction motor speed disc brakes

  • Single disc and caliper on each traction motor (4)
  • Emergency fail safe brakes are spring applied in the event of air pressure loss

Parking brake system

Spring applied, air release traction motor speed disc brakes

HPD gear box cooler module
  • Thermostatically controlled, variable speed 24V electric motor-driven, radiator mounted fan.
  • Thermostatically controlled, variable speed 24V electric motor-driven, radiator mounted fan.
Power electronics cooler mode
  • Thermostatically controlled, variable speed 24V electric motor-driven, radiator mounted fan.
  • Thermostatically controlled, variable speed 24V electric motor-driven, radiator mounted fan.
Air filtration

Primary

  • Self cleaning KLENZ filtration system
  • Replaceable Filter Media meets the MERV15 rating
  • 5 000 hour filter life achievable
  • Filtered air for engine, drive system cooling and pressurized cab

Secondary

  • Dual safety filters for engine

Primary

  • Self cleaning KLENZ filtration system
  • Replaceable Filter Media meets the MERV15 rating
  • 5,000 hour filter life achievable
  • Filtered air for engine, drive system cooling and pressurized cab

Secondary

  • Dual safety filters for engine
Fluid capacities
Fuel 4 542 L
Hydraulic 1 445 L
SR converter cooling system 57 L
Engine cooling system 490 L
Crankcase (includes filters)  
    Detroit 250 L
    Cummins 204 L
Gearbox 27 L
Planetaries (each) 151 L
Fuel 1,200 gal
Hydraulic 382 gal
SR converter cooling system 15 gal
Engine cooling system 130 gal
Crankcase (includes filters)  
    Detroit 66 gal
    Cummins 54 gal
Gearbox 7 gal
Planetaries (each) 40 gal
Structural

Frames are fabricated from high strength, low-alloy steel with excellent weld characteristics and extreme low temperature properties. The front axle is an integral, fixed part of the front frame. The rear axle center oscillates 11 degrees.

Unique forged ball and socket joints are utilized in multiple pivot locations (lift arms, rear axle, frame articulation, hoist cylinders). These joints are superior in absorbing and distributing multi-directional stresses. Features easily replaceable brass liners for long life and easy maintenance.

High strength castings are used in key areas of fabricated structures to reduce stress and improve structural life.

Frames are fabricated from high strength, low-alloy steel with excellent weld characteristics and extreme low temperature properties. The front axle is an integral, fixed part of the front frame. The rear axle center oscillates 11 degrees.

Unique forged ball and socket joints are utilized in multiple pivot locations (lift arms, rear axle, frame articulation, hoist cylinders). These joints are superior in absorbing and distributing multi-directional stresses. Features easily replaceable brass liners for long life and easy maintenance.

High strength castings are used in key areas of fabricated structures to reduce stress and improve structural life.

Tires
Tires 58/85-57 L-4
Rims 47 x 57 with 6 in flange
Tires 58/85-57 L-4
Rims 47 x 57 with 6 in flange
Buckets
Standard, ISO-rated capacity 58 967 kg
High lift, ISO-rated capacity 54 331 kg

Rock and coal bucket configurations available.

Buckets sized to material density. 

Standard, ISO-rated capacity 130,000 lbs.
High lift, ISO-rated capacity 120,000 lbs.

Rock and coal bucket configurations available.

Buckets sized to material density. 

  • 120V AC port
  • 360 camera system
  • Accelerometer
  • Access ladder lights
  • Air conditioning / heater-defroster (filtered and pressurized)
  • Air dryer system
  • Air horn
  • Air tank bleed system
  • Adjustable automatic lift height cut off
  • Automatic bucket leveling control
  • Automatic electrical cabinet lights
  • Automatic lubrication system
  • Back-up alarm, audible
  • Battery disconnect switch
  • Brake lights
  • Central air regulator box
  • Central service with fast fuel
  • Data analysis and viewing software
  • Data logging - downloadable production and maintenance logs
  • Door interlock on electrical cabinet
  • Drawbar with tow points
  • Emergency stop buttons (cab and remote mounted)
  • Engine compartment lights
  • Fire extinguisher, manual, 9.07 kg
  • FOPS - falling object protection system
  • Idle timer
  • Inclinometer
  • Interior lights
  • Isolation monitor
  • Joystick hoist and bucket control
  • Joystick steering control
  • Jump start
  • Ladder walkway (rear access w/retracting ladder)
  • LED working lights (10 forward, 2 rear)
  • LINCS II alarms
  • LINCS II load weigh and monitoring
  • Mirrors, rearview (parabolic)(2)
  • Operator seat (11-way adjustable)
  • Overspeed alarm
  • Parking brake
  • Retractable lap belt with shoulder harness
  • Rock deflectors (bucket)
  • ROPS - rollover protection structure
  • Selectable throttle switch
  • Starter disconnect switch
  • Tinted safety glass throughout
  • Training seat (with lap belt)
  • Turn signals
  • Twelve (12) volt power supply in cab
  • Twelve (12) volt power port
  • USB Ports (2)
  • Walk around catwalk for cab
  • Windshield washer reservoir (2.6 gal)
  • Windshield wiper and washer (front and rear)
  • 120V AC port
  • 360 camera system
  • Accelerometer
  • Access ladder lights
  • Air conditioning / heater-defroster (filtered and pressurized)
  • Air dryer system
  • Air horn
  • Air tank bleed system
  • Adjustable automatic lift height cut off
  • Automatic bucket leveling control
  • Automatic electrical cabinet lights
  • Automatic lubrication system
  • Back-up alarm, audible
  • Battery disconnect switch
  • Brake lights
  • Central air regulator box
  • Central service with fast fuel
  • Data analysis and viewing software
  • Data logging - downloadable production and maintenance logs
  • Door interlock on electrical cabinet
  • Drawbar with tow points
  • Emergency stop buttons (cab and remote mounted)
  • Engine compartment lights
  • Fire extinguisher, manual, 20 lb
  • FOPS - falling object protection system
  • Idle timer
  • Inclinometer
  • Interior lights
  • Isolation monitor
  • Joystick hoist and bucket control
  • Joystick steering control
  • Jump start
  • Ladder walkway (rear access w/retracting ladder)
  • LED working lights (10 forward, 2 rear)
  • LINCS II alarms
  • LINCS II load weigh and monitoring
  • Mirrors, rearview (parabolic)(2)
  • Operator seat (11-way adjustable)
  • Overspeed alarm
  • Parking brake
  • Retractable lap belt with shoulder harness
  • Rock deflectors (bucket)
  • ROPS - rollover protection structure
  • Selectable throttle switch
  • Starter disconnect switch
  • Tinted safety glass throughout
  • Training seat (with lap belt)
  • Turn signals
  • Twelve (12) volt power supply in cab
  • Twelve (12) volt power port
  • USB Ports (2)
  • Walk around catwalk for cab
  • Windshield washer reservoir (2.6 gal)
  • Windshield wiper and washer (front and rear)
  • Auxiliary steering
  • Beacon light kit
  • Bucket GET options available
  • Cold weather package- including:
    • Battery heater
    • Engine heating system (oil and water)
    • Grease reservoir heater
    • Hydraulic tank heater
  • Exhaust discharge guard
  • Fire detection and suppression system (manual)
  • Fire suppression system (manual)
  • Fluid sampling kit
  • Lift arms - high lift
  • Tires/rims
    • Tires - 60/80R57
    • Rims - 47 x 57 with 5" flange
  • Windshield protection kit
  • Auxiliary steering
  • Beacon light kit
  • Bucket GET options available
  • Cold weather package- including:
    • Battery heater
    • Engine heating system (oil and water)
    • Grease reservoir heater
    • Hydraulic tank heater
  • Exhaust discharge guard
  • Fire detection and suppression system (manual)
  • Fire suppression system (manual)
  • Fluid sampling kit
  • Lift arms - high lift
  • Tires/rims
    • Tires - 60/80R57
    • Rims - 47 x 57 with 5" flange
  • Windshield protection kit
Support you can count on

Technology that works as hard as you do

Wheel Loader_WE1150_GPL10420_new_Yellow bucket.psd
Komatsu’s ties to SR Technology date back to the beginning. SR is the future, but it’s been part of Komatsu’s for a long time. Everything we did has been built on decades of work and experience. Not only can we offer the benefits others are beginning to scratch the surface on, but we know how to apply this technology and optimize every bit of reliability, fuel efficiency and performance.
WE1250
Komatsu’s new Electric Drive Innovation Center focuses on expanding the capabilities of SR Technology. It may seem like breakthroughs come out of nowhere, they certainly did not. They are born out of years of hard work and they happen in places like Komatsu’s new Electric Drive Innovation Center located in Longview, Texas, U.S.
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The SR (Switched Reluctance) hybrid drive system captures and uses regenerated energy, helping to reduce a machine’s overall fuel consumption and wear and tear on mechanical parts.

Find what works for you