Wheel Loader
Cooling Systems
Multi-circuit cooling for loaders from compact to large mining class. Engineered for transmission loads, low-speed operation, and continuous aggregates handling.
Typical Heat Sources
Wheel loaders require balanced cooling for engine, transmission, and hydraulic systems. The continuous bucket loading cycle creates sustained thermal loads that demand robust heat rejection capacity.
Engine Coolant
Primary engine heat rejection with high ambient margin.
Transmission Oil
Torque converter and gearbox heat from loading cycles.
Hydraulic Oil
Boom, bucket, and steering cylinder heat rejection.
Charge Air
Turbocharger outlet cooling for emissions compliance.
4-in-1 Integration Benefits
- Single mounting reduces assembly complexity
- Coordinated airflow through all circuits
- Lower installed cost vs separate components
- Compact packaging for hood clearance
Wheel Loader Constraints
Low Ground Speed
Wheel loaders operate at low speeds, limiting ram air. Cooling fan is the primary air source, requiring optimized core and shroud design.
Transmission Heat
Torque converter and transmission generate substantial heat during bucket loading operations. Dedicated transmission cooling capacity is critical.
Articulation Dust
Articulated steering creates dust ingestion paths. Core protection and serviceability access must account for this.
Continuous Duty Cycles
Loading operations involve continuous high-power cycles. Thermal systems must sustain performance without overheating.
Boom Cylinder Heat
Aggressive bucket work generates hydraulic heat. Oil cooler sizing must account for peak and sustained loads.
Operator Visibility
Cooling package location affects cab visibility. Compact, efficient designs minimize hood height.
Size Classes
| Size Class | Characteristics | Typical Circuits | Heat Rejection |
|---|---|---|---|
| Compact (3–5T) | Tight packaging, skid-steer derived platforms | CoolantHydraulic | 25–50 kW |
| Small (6–10T) | Balanced performance, moderate duty | CoolantCACHydraulic | 50–90 kW |
| Medium (11–18T) | Heavy aggregates handling, continuous operation | CoolantCACHydraulicTransmission | 90–150 kW |
| Large (20–35T+) | Mining and quarry operations, maximum capacity | Full multi-circuit integration | 150–300+ kW |
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