Off highway vehicles operate in some of the most punishing environments imaginable — from open-pit mines and construction sites to agricultural fields and forestry operations. These machines work harder, run longer, and face more extreme conditions than nearly any on-road vehicle, making reliable thermal management not just a performance concern, but a critical safety and uptime requirement. When a machine goes down in the field, the costs are immediate and significant.
The heating and cooling demands of off highway vehicles are as complex as the applications they serve. Heavy equipment like excavators, dozers, and haul trucks generate massive heat loads from large-displacement diesel engines running at sustained high torque — requiring robust radiators, hydraulic oil coolers, and charge air coolers engineered for continuous-duty cycles in dusty, debris-laden environments.Agricultural machinery faces its own set of challenges: combines and tractors must maintain thermal stability across variable loads and long operating hours, often in remote locations where failure is not an option. In construction and mining, hydraulic systems are the lifeblood of the machine, and keeping hydraulic fluid within the proper temperature range is essential to maintaining pressure, protecting seals, and preventing component wear. Meanwhile, operator cab climate control remains a critical requirement across all segments — ensuring comfort and focus during long shifts in extreme heat or cold.
General ThermoDynamics & Airtech brings deep thermal engineering expertise to the off highway market. We design and manufacture heavy-duty radiators, hydraulic oil coolers, charge air coolers, and custom heat exchanger assemblies built to withstand the rigors of agricultural, construction, and mining applications. Whether you need a direct replacement solution or a purpose-built thermal system for a specialized machine, our team has the experience and manufacturing capability to deliver.
Our areas of expertise.
Agriculture and Forestry
Typical applications
Harvester
Haulers
Wheel loader
Rope tug
Tractors
Tub grinders
Shunting machines
Construction
Typical applications
Single drum rollers
Bulldozers
Excavator
Latice boom cranes
Motor grader
Road construction equipment
Cranes for rough terrain
Skid steer loader
Trenching
Wheel loader
Mining
Typical applications
Blast hole drill
Excavator
Transport vehicles
Stone crusher
Surface mining machines
Wheel loader
Powersports
Typical applications
Off-road vehicles
Four-wheeled vehicles (quad)
Motorcycles
Snowmobiles
Commercial vehicles
Turf Care
Typical applications
Commercial Mowers
Lawnmowers
Landscaping Mowers
Reel Mowers
Bunker Rakes
Utility Vehicles
The applications we serve include:
Agricultural Equipment
Tractors – The backbone of farming operations, used for towing, tillage, planting, and powering a wide range of implements across all types of terrain.
Combines – Large harvesting machines that simultaneously cut, thresh, and separate grain crops in a single pass across the field.
Forage Harvesters – High-capacity machines that chop and collect green crops like corn or grass for silage production.
Construction Equipment
Excavators – Tracked or wheeled machines equipped with a boom and bucket used for digging, trenching, and material handling on job sites.
Bulldozers – Heavy tracked machines with a front-mounted blade used for pushing large quantities of soil, sand, or debris.
Wheel Loaders – Versatile machines with a front bucket used for scooping, lifting, and transporting loose materials on construction sites.
Motor Graders – Long-bodied machines with a central blade used to create flat surfaces and precise grades on roads and job sites.
Skid Steer Loaders – Compact, maneuverable machines with lift arms used for digging, grading, and material handling in tight spaces.
Compactors/Rollers – Heavy machines used to compress soil, asphalt, or gravel to create a stable, even surface.
Trenchers – Machines designed to cut narrow trenches in the ground for laying pipes, cables, or drainage systems.
Mining Equipment
Haul Trucks – Massive off-road dump trucks designed to transport large volumes of ore, rock, or overburden in open-pit mining operations.
Drill Rigs – Machines used to bore holes into rock or earth for blasting, sampling, or anchoring in mining and construction.
Underground Loaders (LHDs) – Low-profile load-haul-dump vehicles designed to scoop and transport material in confined underground mining tunnels.
Mining Shovels – Giant electric or hydraulic shovels used to excavate and load massive quantities of material into haul trucks.
Forestry Equipment
Feller Bunchers – Machines that cut and gather multiple trees simultaneously, laying them in bunches for further processing.
Skidders – Rugged vehicles used to drag or carry felled trees from the cutting site to a landing area for processing.
Forwarders – Articulated machines that pick up and carry cut logs on a bunk or load area to reduce ground disturbance.
Harvesters – Multi-function forestry machines that fell, delimb, and buck trees into logs in a single automated operation.
Utility & Ground Support Vehicles
Telehandlers – Versatile lifting machines with a telescoping boom used to reach and place materials at height on construction or agricultural sites.
Aerial Work Platforms (AWPs) – Self-propelled machines that lift workers and equipment to elevated heights for maintenance or construction tasks.
Airport Ground Support Equipment (GSE) – Specialized vehicles such as baggage tugs, pushback tractors, and de-icers that service aircraft on the ground.”