Used Komatsu 400-3Loader

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📌 Overview

The Komatsu WA400-3 is a medium-to-large class wheel loader belonging to Komatsu's 3rd generation (-3 series) of loaders. It is designed for high-productivity operations in mining, quarrying, construction, and large-scale earthmoving applications. The "-3" designation indicates it is the third generation of Komatsu's wheel loader platform, featuring significant improvements in fuel efficiency, operator comfort, and productivity over its predecessors (WA400-1, WA400-2).

🔧 Key Specifications

Parameter	Details
Model	WA400-3
Engine	Komatsu SAA6D125E-5
Engine Type	6-cylinder, turbocharged, aftercooled diesel
Displacement	11.66 L (711 cu in)
Net Power	~287 hp (214 kW) @ 1,800 rpm
Rated Bucket Capacity	2.0 – 2.7 m³ (2.6 – 3.5 yd³)
Operating Weight	~19,000 – 20,000 kg (41,900 – 44,100 lbs)
Max Breakout Force	~155 – 165 kN (34,800 – 37,100 lbf)
Max Lift Capacity (at full height)	~8,500 – 9,500 kg (18,700 – 20,900 lbs)
Max Dump Height	~3,100 – 3,200 mm (10.2 – 10.5 ft)
Max Dump Reach	~1,100 – 1,200 mm (3.6 – 3.9 ft)
Travel Speed (loaded)	~11 – 13 km/h (6.8 – 8.1 mph)
Transmission	Powershift, 2-speed forward / 2-speed reverse
Hydraulic System	Load-Sensing (LS)
Tire Size	23.5-25 (standard)
Fuel Tank Capacity	~370 L (98 US gal)

🏗️ Engine – Komatsu SAA6D125E-5

Feature	Detail
Configuration	6-cylinder inline, 4-stroke
Displacement	11,660 cc
Turbocharged & Aftercooled	Yes
Emission Standard	Tier 4 Final / Stage V (depending on region)
Technologies	Common rail fuel injection, EGR + DPF (Diesel Particulate Filter)
Fuel Efficiency	Improved ~10–15% over previous generation

The engine delivers excellent torque at low RPM, ideal for heavy loading and tough material handling.

🔄 Transmission & Drivetrain

Feature	Detail
Type	Full Powershift
Gears	2F / 2R (with creep speed option)
Axles	Heavy-duty planetary final drives
Differential Lock	Available (rear axle)
4WD	Standard

The powershift transmission provides smooth gear changes without interrupting torque delivery — critical for load-and-carry productivity.

💧 Hydraulic System

Feature	Detail
Type	Load-Sensing (LS) + Flow Sharing
Pump Type	Variable displacement axial piston
Max Flow	~370 – 400 L/min (98 – 106 US gpm)
Max Pressure	~35 MPa (5,075 psi)
Lift Time (bucket full)	~5.5 – 6.5 seconds
Lower Time	~2.5 – 3.0 seconds
Tilt Cylinders	Dual, for quick dump

The load-sensing hydraulics match pump output to demand, reducing energy waste and improving fuel economy.

🪣 Bucket & Work Tools

Bucket Type	Capacity	Application
General Purpose (GP)	2.0 – 2.7 m³ (2.6 – 3.5 yd³)	General loading, stockpiling
Rock / Heavy Duty	1.8 – 2.2 m³	Hard rock, quarrying
Coal / Light Material	2.7 – 3.2 m³	Coal, sand, light fill
Pallet Fork	—	Material handling
Snow Blade	—	Winter operations
Grapple	—	Scrap, waste handling

Quick Coupler available as an option for fast tool changes.

🖥️ Operator Cab – Komatsu's 3rd Gen Design

The WA400-3 features one of the best cabs in its class:

Feature	Detail
ROPS/FOPS	Certified (Roll-Over & Falling Object Protection)
Suspension Seat	Air-suspended, fully adjustable
Climate Control	Auto A/C with dual-zone
Noise Level	~73 dB(A) – very quiet
Display	Large LCD multi-function monitor
Controls	Electro-hydraulic joystick (optional), or lever
Visibility	Excellent all-round with large glass area
Camera System	Rear & side cameras (optional)
USB/Bluetooth	Yes

🧠 Smart Technology – KOMTRAX & ECO Mode

Technology	Description
KOMTRAX	Remote machine monitoring – tracks location, hours, fuel, diagnostics, maintenance alerts via satellite
ECO Mode	Automatically reduces engine RPM during light loads — saves up to 15% fuel
Auto Idle Shutdown	Engine automatically shuts off after preset idle time
Auto Lubrication	Centralized auto-grease system
Remote Diagnostics	Komatsu can diagnose issues remotely
Weight Management System	Helps operators optimize bucket load for max productivity

📊 Performance Summary

Metric	WA400-3
Productivity	~250 – 350 t/hr (depending on material)
Fuel Consumption	~28 – 35 L/hr (load-and-carry)
Cycle Time	~18 – 22 seconds (typical)
Availability	>90% (with proper maintenance)
Service Intervals	Engine oil: 500 hrs / Hydraulic oil: 2,000 hrs

✅ Advantages

✅	Advantage
1	High productivity – fast cycle times, large bucket
2	Fuel efficient – ECO mode, load-sensing hydraulics
3	Excellent operator comfort – air-suspended seat, quiet cab, A/C
4	Low maintenance – long service intervals, easy access points
5	Durable & reliable – built for tough conditions (mining, quarries)
6	Smart monitoring – KOMTRAX for fleet management
7	Versatile – multiple work tool options with quick coupler

🆚 Competitors Comparison

Feature	Komatsu WA400-3	CAT 950M	Volvo L120H	XCMG LW500KN
Power	287 hp	350 hp	295 hp	280 hp
Bucket	2.0–2.7 m³	2.7–3.8 m³	2.3–3.5 m³	2.5–3.0 m³
Weight	~19,500 kg	~21,500 kg	~20,000 kg	~18,500 kg
Fuel Efficiency	⭐⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐
Cab Comfort	⭐⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐⭐	⭐⭐⭐⭐
Price	Mid-High	High	High	Low-Mid

💰 Approximate Pricing (2024 estimates)

Region	Price Range (USD)
New	$280,000 – $380,000
Used (5,000–8,000 hrs)	$120,000 – $200,000
Rental	$350 – $550/day

(Prices vary by region, configuration, and dealer)

🔧 Maintenance Schedule (Key)

Item	Interval
Engine Oil & Filter	500 hrs / 6 months
Hydraulic Oil & Filter	2,000 hrs / 12 months
Transmission Oil	2,000 hrs
Final Drive Oil	4,000 hrs
Coolant	2,000 hrs / 24 months
Fuel Filters	500 hrs
Air Filter	500 hrs
Grease (all points)	250 hrs

🎯 Ideal Applications

✅ Application	📋 Details
🏗️ Construction	Road building, land clearing, utility work
& Mining	Loading trucks, stockpiling, pit operations
🪨 Quarrying	Rock loading, aggregate production
🏭 Industrial	Steel mills, power plants, port operations
🗑️ Waste Management	Landfill, recycling, scrap handling
❄️ Winter Ops	Snow removal (with blade)

📋 Summary


Machine	Komatsu WA400-3
Class	Medium-Large Wheel Loader (400-class)
Power	287 hp (214 kW)
Bucket	2.0 – 2.7 m³
Weight	~19,500 kg
Generation	3rd Gen (-3 Series)
Best For	Mining, quarrying, heavy construction
Key Strengths	Fuel efficiency, operator comfort, reliability, smart tech

🔑 Bottom Line: The Komatsu WA400-3 is one of the most productive and fuel-efficient wheel loaders in its class. Its combination of powerful engine, fast hydraulics, superb cab comfort, and KOMTRAX connectivity makes it a top choice for operators who demand high uptime and low operating costs.

Would you like more details on any specific aspect — such as pricing in a specific country, comparison with a specific competitor, or maintenance guide? 😊