Quick Answer
- Off-highway vehicle AC systems typically deliver 3–5 kW cooling capacity at 12V or 24V DC, using R134A refrigerant to handle ambient temperatures up to 55°C.
- Key selection criteria include cab volume (1.5–4 m³), vibration resistance (5–8 g RMS), and IP5X dust sealing for agricultural and mining environments.
- Kangbao supplies off-highway vehicle AC units with OEM integration kits, flexible voltage options, and annual capacity of 300,000 units for global B2B buyers.
Off-highway vehicles—tractors, excavators, loaders, and harvesters—operate in conditions that standard automotive air conditioners cannot survive. High dust, constant vibration, and extreme temperature swings demand AC systems built specifically for non-road machinery. For fleet managers and OEM buyers, understanding the core specifications of an off-highway vehicle AC system ensures the right fit for the machine and the operating environment.
Off-Highway Vehicle AC System Specifications
Unlike on-road truck or car AC units, off-highway systems must handle unsealed cabs, engine heat transfer through shared firewalls, and long idle hours under full sun. The following table summarizes the critical specs buyers should verify before placing B2B orders.
| Parameter | Typical Range | Why It Matters |
|---|---|---|
| Cooling capacity | 3–5 kW | Matches cab volume 1.5–4 m³ and ambient heat load |
| Voltage | 12V / 24V DC | Must match machine electrical system; 24V common in heavy equipment |
| Refrigerant | R134A | Global standard with stable supply chain and service compatibility |
| Vibration resistance | 5–8 g RMS | Prevents compressor and pipe fatigue on rough terrain |
| Dust sealing | IP5X / IP6X | Protects condenser and evaporator in agricultural/mining dust |
| Ambient operating temp | Up to 55°C | Ensures cooling performance in desert and open-pit conditions |
| Compressor type | Swash plate / Electric | Swash plate for belt-driven; electric for hybrid/electric machines |
Kangbao’s off-highway vehicle AC units are tested to these specifications across tractor, excavator, loader, and harvester platforms. Each system ships with mounting brackets, hose kits, and wiring harnesses tailored to the target machine type.
Choosing the Right AC System for Your Off-Highway Fleet
- Match voltage to the machine electrical system — 12V for compact tractors and small loaders; 24V for excavators, mining trucks, and large harvesters. Mixing voltages causes compressor clutch failure and battery drain.
- Specify cab volume before ordering capacity — A 3 kW unit cools a 1.5 m³ compact cab in under 10 minutes; a 4 m³ mining excavator cab needs 4.5–5 kW to maintain 25°C when ambient exceeds 50°C.
- Request OEM integration drawings — Condenser mounting, evaporator placement, and hose routing vary by machine model. Kangbao provides CAD layouts and bracket templates to reduce installation time by 30–40%.
- Verify dust and vibration ratings — Agricultural fields and mining pits expose AC components to silica dust and 5–8 g continuous vibration. Units without IP5X sealing or reinforced pipe clamps fail within 1–2 seasons.
FAQ
What voltage should I choose for an off-highway vehicle air conditioner?
Choose 12V DC for compact tractors, skid steers, and small loaders with standard automotive electrical systems. Choose 24V DC for excavators, mining trucks, large harvesters, and any machine with a 24V starter and battery bank. Using the wrong voltage causes clutch slippage, overheating, and premature compressor failure.
How much cooling capacity does an off-highway cab need?
A general rule is 1 kW per 1 m³ of cab volume for temperate climates, and 1.2–1.5 kW per m³ for desert or tropical conditions. Typical ranges: 3 kW for compact cabs (1.5–2 m³), 4 kW for mid-size excavators and loaders (2.5–3 m³), and 5 kW for large mining or agricultural cabs (3.5–4 m³).
Kangbao: Off-Highway Vehicle AC Supplier in China
Founded in 2011 in Shandong, China, Kangbao has grown into a reliable partner for global OEMs. Our advanced production facilities and annual capacity of 300,000 units allow us to serve clients of all scales.
Professional laboratory equipment ensures the research and application of products
Trusted Partner for Global OEMs
Global Partnerships and Service
Kangbao has established long-term relationships with leading Off-Highway Vehicle AC OEMs in China and abroad. Our products are exported to markets in Turkey, Russia, South Africa, and beyond.
We support flexible trade terms (FOB, CIF, DDP) and provide reliable after-sales service, ensuring global clients receive consistent quality and support throughout the product lifecycle.
Contact KANGBAO
Kangbao is your reliable partner for Off-Highway Vehicle AC.
