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KOMATSU WA250-6 wheel loader

Permalink : http://product.cmsou.com/detail_NDkx0---.html    Last Updated : 2014-06-17
KOMATSU WA250-6 wheel loader

KOMATSU WA250-6 wheel loader

  • Feature
  • Parameter
High Productivity & Low Fuel Consumption with Hydrostatic Transmission • High performance SAA6D107E-1 engine • Low fuel consumption • Electronically-controlled HST with variable shift control system • Variable traction control system • S-mode Excellent Operator Environment • HST traction control switch • Electronically controlled directional lever • Tiltable steering column • Low-noise designed cab • Pillar-less large ROPS/FOPS Level 2 cab-integrated • Easy entry/exit, rear-hinged doors Environmentally Friendly • EPA Tier 3 and EU Stage 3A emissions certified • Low exterior noise • Low fuel consumption KOMTRAX® equipped machines can send location, SMR and operation maps to a secure website utilizing wireless technology. Machines also relay error codes, cautions, maintenance items, fuel levels, and much more. Reliability • Reliable Komatsu designed and manufactured components • Sturdy main frame • Adjustment-free, fully hydraulic, wet disc service and parking brakes • Hydraulic hoses use flat face O-ring seals • Cathion electrodeposition process is used to apply primer paint • Powder coating process is used to apply main structure paint • Sealed DT connectors for electrical connections Easy Maintenance • Equipment Management Monitoring System (EMMS) • Easy access, gull-wing type engine side doors • Automatic Reversible Fan • KOMTRAX®
Engine
ModelKomatsu SAA6D107E-1
TypeWater-cooled, 4-cycle
AspirationTurbocharged, aftercooled
Number of cylinders6
Bore x stroke4.21" x 4.88"107 mm x 124 mm
Piston displacement408 in³6.69 ltr
GovernorAll-speed, electronic
Horsepower:
SAE J1995 / Gross140 HP104 kW
ISO 9249/SAE J1349 / Net138 HP103 kW
Hydraulic fan at maximum speed / Net134 HP100 kW
Rated rpm2000 rpm
Fan drive method for radiator coolingHydraulic
Fuel systemDirect injection
Lubrication system:
MethodGear pump, force-lubrication
FilterFull-flow type
Air cleanerDry type with double elements and dust evacuator, plus dust indicator
EPA Tier 3 and EU Stage 3A emissions certified.
Transmission
Travel speed
(Measured with 17.5-25 tires):
Both Forward and Reverse
1st2.2 - 7.3 mph
3.6 - 11.7 km/h
2nd7.3 mph
11.7 km/h
3rd10.1 mph
16.2 km/h
4th21.2 mph
34.2 km/h
Travel speed
(Measured with 20.5-25 tires):
Both Forward and Reverse
1st2.5 - 8.1 mph
4.0 - 13.0 km/h
2nd8.1 mph
13.0 km/h
3rd11.2 mph
18.0 km/h
4th23.6 mph
38.0 km/h
Axles and Final Drives
Drive systemFour-wheel drive
FrontFixed, semi-floating
RearCenter-pin support, semi-floating, 24° total oscillation
Reduction gearSpiral bevel gear
Differential gearTorque proportioning
Final reduction gearPlanetary gear, single reduction
Brakes
Service brakesHydraulically-actuated, wet disc brakes actuate on four wheels.
Parking brakeWet, multi-disc brake on transfer output shaft.
Emergency brakeParking brake is commonly used
Steering System
TypeFull-hydraulic power steering
Steering angle38° each direction (40° end stop)
Minimum turning radius at the center of outside tire17'0"5175 mm
Hydraulic System
Steering system:
Hydraulic pumpGear type pump
Capacity (at rated rpm)29.1 U.S. gal/min110 ltr/min
Relief valve setting2,700 psi18.6 MPa
190 kgf/cm²
Hydraulic cylinders:
TypeDouble-acting, piston type
Number of cylinders2
Bore x stroke2.8" x 17.8"70 mm x 453 mm
Loader control:
Hydraulic pumpGear type pump
Capacity20.6 U.S. gal/min78 ltr/min
Relief valve setting3,000 psi20.6 MPa
210 kgf/cm²
Hydraulic cylinders:
TypeDouble-acting, piston type
Number of cylindersbore x strokebore x stroke
Boom cylinder - 25.1" x 28.2"130 mm x 717 mm
Bucket cylinder - 15.9" x 19.3"150 mm x 491 mm
Control valve2-spool type
Control positions:
BoomRaise, hold, lower, and float
BucketTilt-back, hold, and dump
Hydraulic cycle time (rated load in bucket)
Raise6.3 sec
Dump1.7 sec
Lower (Empty)3.6 sec
Service Refill Capacities
Cooling system5.8 U.S. gal22 ltr
Fuel tank49.1 U.S. gal186 ltr
Engine6.1 U.S. gal23 ltr
Hydraulic system17.7 U.S. gal67 ltr
Axle (each, front and rear)4.8 U.S. gal18 ltr
Transfer1.3 U.S. gal5 ltr
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