• 28,164 - 29,299 lbs Operating Weight
  • 149 @2000 rpm Horsepower
  • 2.5 - 3.5 yd¬≥ Bucket Capacity

WA270-7

The Komatsu Tier 4 interim technology on the WA270-7 is designed to keep the operator working rather than having to stop and regenerate while saving up to 10% on fuel burned. The hydrostatic drive system on the WA270-7 gives the operator quick and powerful response, self-braking effect of dynamic braking and traction control. A multi-function mono-lever, rearview camera system with separate screen and heated, air ride suspension seat give the operator a comfortable and ergonomic work environment.

WA270-7 Walkaround  >


Features

Creep Mode

Creep mode limits the travel speed while still allowing for full hydraulic flow.

Electronically Controlled Suspension System (ECSS)

The Electronically Controlled Suspension System (ECSS) or ride control system uses an accumulator which absorbs some of the shock in the boom arm, giving the operator a much smoother ride. This reduces operator fatigue and reduces material spillage during load and carry operations. ECSS is speed sensitive, meaning that the boom won’t move during stationary digging. ECSS is standard on the WA270-7.

Full Side-Opening Gull-Wing Engine Doors

The large gull-wing type engine doors are operated with low effort assisted by gas springs. The doors open in two steps for easy access to maintenance points. Large steps and hand holds are provided on each side of the frame to help access.

Heated Operator Seat with Air Suspension

A new higher capacity heated, air suspension seat with suspension damper is now standard. The arm rest angle is fully adjustable for optimum operator comfort.

Hydrostatic Transmission

The HST provides quick travel response and aggressive drive into the pile. Full auto-shifting eliminates any gear shifting and kick-down operation to allow the operator to concentrate on the digging and loading. The HST also acts as a dynamic brake to slow the loader. This prolongs the life of the wet disc brakes.

Komatsu SmartLoader Logic

Wheel loaders have different torque requirements depending on working conditions. Komatsu SmartLoader Logic reads data from various sensors and vehicle controls to precisely control the torque output. This lowers the torque output during less demanding work, saving fuel. And because its seamless to the operator, it operates without decreasing production.

Low Noise Design

Operator’s ear noise level : 70 dB(A)

Dynamic noise level (outside): 107 dB(A)

The large cab is mounted with Komatsu’s unique ROPS/FOPS viscous mounts. The low-noise engine, hydraulically driven fan, and hydraulic pumps are mounted with rubber cushions, and the cab sealing is designed to provide a quiet, low-vibration, dustproof, and comfortable operating environment

Manual Stationary Regeneration

Under most conditions, active regeneration will occur automatically with no effect on machine operation. In case the operator needs to disable active regeneration or initiate a manual stationary regeneration, this can be easily accomplished through the monitor panel.A soot level indicator is displayed to show how much soot is trapped in the KDPF.

Multi-Function Mono Lever

The multi-function mono lever with EPC control for 3rd spool is standard. It includes a forward-neutral-reverse switch for quick and easy travel. Third spool attachments can be set to continual or proportional control via the monitor panel allowing the operator to control the boom, bucket and attachment all with a single lever.

Rear View Monitoring System (standard)

The operator can view the area directly behind the machine with a full color monitor that is located on the right side of the cab. This monitor can be set to be always on or only on when the loader goes into reverse. Visual guidelines can also be added to show the machine's travel path.

Remote Boom Positioner

The operator can set the upper boom kickout from the cab.

Swing-out Type Cooling Unit

The large capacity cooling unit swings open for cleaning. It features wider spacing of cooling fins to reduce clogging.

Variable Traction Control System

The new variable speed control system is designed to adjust the operating speed for each working condition. S-mode reduces tire spin in slippery or snowy conditions. Auto-mode automatically optimizes the tractive effort for various working conditions. Max traction provides the full, 100%, tractive effort.

Specifications

Axles and Final Drives

Drive system Four-wheel drive
Front Fixed, semi-floating
Rear Center-pin support, semi-floating, 20° total oscillation
Reduction gear Spiral bevel gear
Differential gear Torque proportioning
Final reduction gear Planetary gear, single reduction

Brakes

Service brakes Hydraulically actuated, wet disc brakes actuate on four wheels
Parking brake Wet, multi-disc brake on transfer output shaft
Emergency brake Parking brake is commonly used

Engine

Model Komatsu SAA6D107E-2*
Type Water-cooled, 4-cycle
Aspiration Turbo-charged, after-cooled, cooled EGR
Number of cylinders 6
Bore x stroke 4.21" x 4.88" 107 mm x 124 mm
Piston displacement 408 in³ 6.69 ltr
Governor All-speed, electronic
Horsepower:
Gross - SAE J1995 153 HP 115 kW
Net - ISO 9249/SAE J1349 149 HP 111 kW 149 HP
Rated rpm 2000 rpm
Max power - ISO 14396 @ 1900 rpm 150 HP 112 kW
Fan drive method for radiator cooling Hydraulic
Fuel system Direct injection
Lubrication system:
Method Gear pump, force-lubrication
Filter Full-flow type
Air cleaner Dry type with double elements and dust evacuator, plus dust indicator
*EPA Tier 4 Interim and EU stage 3B emissions certified

Hydraulic System

Steering system:
Hydraulic pump Piston pump, in common with loader control
Capacity (at rated rpm) 39.6 U.S. gal/min 150 ltr/min
Relief valve setting 3,000 psi 20.6 MPa 210 kgf/cm²
Hydraulic cylinders:
Type Double-acting, piston type
Number of cylinders 2
Bore x stroke 2.76" x 17.8" 70 mm x 453 mm
Loader control:
Hydraulic pump Piston pump, in common with steering system
Capacity (at rated rpm) 39.6 U.S. gal/min 150 ltr/min
Relief valve setting 4,555 psi 320 kg/cm²
31.4 MPa
Hydraulic cylinders:
Type Double-acting, piston type
Number of cylinders: bore x stroke: bore x stroke:
Boom cylinder / 2 4.3" x 28.2" 110 mm x 717 mm
Bucket cylinder / 1 5.5" x 18.9" 140 mm x 480 mm
Control valve 2-spool type
Control positions:
Boom Raise, hold, lower, and float
Bucket Tilt-back, hold, and dump
Hydraulic cycle time (rated load in bucket):
Raise 5.7 sec
Dump 2.0 sec
Lower (empty) 3.2 sec

Service Refill Capacities

Cooling system 7.4 U.S. gal 28 ltr
Fuel tank 49.1 U.S. gal 186 ltr
Engine 6.7 U.S. gal 23 ltr
Hydraulic system 20.6 U.S. gal 78 ltr
Axle front 4.9 U.S. gal 18.5 ltr
Axle rear 4.8 U.S. gal 18 ltr
Transfer case 2.1 U.S. gal 7 ltr

Steering System

Type Articulated type, fully-hydraulic power steering
Steering angle 38° each direction (40° to max end stop)
Minimum turning radius at the center of outside tire 17' 0" 5175 mm

Transmission

Transmission Hydrostatic, 1 pump, 2 motors with speed range select
Travel Speed: Forward Reverse
1st 0.6 - 8.1 mph 0.6 - 8.1 mph
2nd 8.1 mph 8.1 mph
3rd 11.8 mph 11.8 mph
4th 23.6 mph 23.6 mph
Measured with 20.5-25 tires

Standard

  • 2-spool valve for boom and bucket control
  • Alternator - 60 Amp 24V
  • Auto shift transmission with mode select system
  • Automatic hydraulic-driven fan with automatic reverse rotation
  • Back-up alarm
  • Batteries – 92 Ah 680 CCA
  • Battery disconnect
  • Boom kick-out, in-cab adjustable
  • Bucket positioner
  • Color rear view camera and monitor
  • Counterweight, standard and additional
  • Electronically Controlled Suspension System (ECSS)
  • Engine, Komatsu SAA6D107E-2 diesel
  • Engine shut-off system, electric
  • Equipment Management Monitoring System (EMMS)
  • Lights (central warning, brake oil pressure, engine oil pressure, parking brake, cooling fan reverse, KDPF restriction, seat belt caution, KOMTRAX message)
  • Gauges (Engine water temperature, ECO, Fuel level, HST oil temperature, speedometer/tachometer), variable speed display
  • Front fenders
  • Fuel pre-filter with water separator
  • Horn, electric
  • Hydrostatic transmission
  • Komatsu SmartLoader Logic
  • Komatsu Auto Idle Shutdown
  • KOMTRAX® Level 4
  • Lift cylinders and bucket cylinder
  • Lights
  • --Back-up light
  • --Stop and tail light
  • --Turn signal lamps, 2 front and 2 rear with hazard switch
  • --Working lights, halogen, 2 front cab mount
  • --Working lights, halogen, 2 front fender mount
  • --Working lights, halogen, 2 rear grill mount
  • Loader linkage with standard lift arm
  • Multifunction mono-lever loader control with transmission F/R switch
  • Parking brake, electric
  • Radiator, wider core
  • Radiator mask, swing up
  • Rear view mirrors, outside (2) inside (2)
  • Rims for 20.5-R25 tires
  • ROPS/FOPS Cab Level 2
  • --2 x DC12V electrical outlets
  • --Ashtray
  • --Auto air conditioner
  • --Cigarette lighter, 24V
  • --Color LCD/TFT multi-monitor
  • --Cup holder
  • --Floor mat
  • --Operator seat, reclining, air suspension type, heated
  • --Radio, AM/FM with AUX input jack
  • --Rear defroster, electric
  • --Seatbelt, 2-point retractable, 76mm / 3" width
  • --Space for lunch box
  • --Steering wheel, tilt and telescopic
  • --Sun visor, front window
  • --Windshield washer and wiper, front with intermittent
  • --Windshield washer and wiper, rear
  • Service brakes, wet disc type
  • Starting motor
  • Transmission speed ranges, 4 forward and 4 reverse
  • Vandalism protection kit, padlocks for battery box (2)

Optional

  • 3-spool valve (will utilize integrated proportional control switch included in the multi-function mono-lever) and piping
  • Auxiliary steering (SAE)
  • Cutting edge (bolt-on type)
  • Limited slip differential (F&R)
  • Quick coupler
  • Rear full fenders
  • Various tire options, radial and bias
  • Various bucket options