The 7 Forklift Classes Explained: A Complete Guide
Discover the differences between all seven forklift classes. Learn which forklift type is best for warehouses, outdoor jobsites and material handling operations.
Last Updated: September 25, 2026
Understanding the different classes of forklifts can be confusing—even if you’ve been in material handling for years. Whether you work in a warehouse, on a construction site, or are a new operator, knowing the distinctions between forklift classes helps ensure you choose the right equipment for your application.
In this guide, we break down the seven forklift classifications, what makes each one unique, and the applications they’re best suited for.
What are the 7 forklift classes?
The seven forklift classes are Class I Electric Motor Rider Trucks, Class II Electric Narrow Aisle Trucks, Class III Electric Hand Trucks, Class IV Internal Combustion Cushion Tire Trucks, Class V Internal Combustion Pneumatic Tire Trucks, Class VI Tow Tractors and Class VII Rough Terrain Forklifts. Each class is designed for specific operating environments and material handling applications.
How Many Forklift Classes Are There?
| Forklift Class | Primary Use | Power Source | Best Environment |
|---|---|---|---|
| Class I | General material handling | Electric | Warehouses & manufacturing |
| Class II | Narrow aisles | Electric | High-density warehouses |
| Class III | Pallet movement | Electric | Warehouse floors |
| Class IV | Indoor lifting | Internal combustion | Smooth indoor surfaces |
| Class V | Indoor & outdoor lifting | Internal combustion | Mixed environments |
| Class VI | Towing loads | Electric or IC | Warehouses, airports |
| Class VII | Heavy outdoor work | Internal combustion | Construction & lumber yards |
There are seven forklift classes, classified by fuel type, design, and intended application. They range from Class I electric forklifts to Class VII rough terrain forklifts. Select a class below to jump to its description:
- Class I: Electric Motor Rider Trucks
- Class II: Electric Motor Narrow Aisle Trucks
- Class III: Electric Motor Hand or Hand/Rider Trucks
- Class IV: Internal Combustion Engine Trucks (Cushion Tires)
- Class V: Internal Combustion Engine Trucks (Pneumatic Tires)
- Class VI: Electric & Internal Combustion Engine Tractors
- Class VII: Rough Terrain Forklift Trucks
Class I – Electric Motor Rider Trucks
Class I forklifts run on electric batteries, which also act as counterweights. Operators can sit or stand, depending on the model. Available with either pneumatic or cushion tires, Class I forklifts offer exceptional versatility.
Best for:
- Indoor warehouses
- Facilities with strict air quality requirements
- Environments requiring quiet operation
Key Benefits:
- Low noise and zero emissions
- Lower overall operating costs
- Minimal maintenance
- Available in 3‑ or 4‑wheel options
- Suitable for a wide range of lifting capacities
Class II – Electric Motor Narrow Aisle Trucks
Class II forklifts are designed for high‑density warehouse storage and narrow aisles. Their compact size and specialized attachments allow businesses to maximize pallet positions without expanding warehouse space.
Best for:
- Narrow aisle racking
- High-throughput operations
- Order picking and pallet handling
Common Types:
- Order pickers
- Reach trucks
- Turret trucks
- Stand‑up riders
Class III – Electric Motor Hand or Hand/Rider Trucks
Class III equipment includes walkie pallet jacks, walkie stackers, and electric hand/rider trucks. These lifts are ideal for moving loads across warehouse floors, particularly when no high lift is required.
Best for:
- Low-lift applications
- Warehouse floor transportation
- Loading/unloading trailers
Class IV – Internal Combustion Trucks (Cushion Tires)
Class IV forklifts use internal combustion engines powered by gasoline, diesel, compressed natural gas (CNG), or LP gas. Their cushion tires make them best suited for indoor applications with smooth floors.
Best for:
- Indoor warehouses
- Low-clearance aisles
- Moving goods from docks to storage
Key Features:
- Low ground clearance
- Often counterbalanced
- Reliable for high‑capacity indoor lifting
Class V – Internal Combustion Trucks (Pneumatic Tires)
Class V forklifts are among the most widely used due to their pneumatic tires, which make them effective both indoors and outdoors. They offer excellent traction and stability on uneven surfaces.
Best for:
- Outdoor yards
- Warehouses requiring indoor/outdoor flexibility
- Heavy-duty lifting
Fuel Options:
- Diesel
- Gasoline
- LPG
- CNG
Class VI – Electric & Internal Combustion Engine Tractors
Commonly known as tuggers, Class VI tractors are primarily used for pulling loads rather than lifting them. You often see them at airports moving luggage carts.
Best for:
- Airports
- Manufacturing
- Assembly line towing
Class VII – Rough Terrain Forklift Trucks
Designed for outdoor, rugged environments, Class VII forklifts feature large pneumatic tires—similar to tractor tires—that provide stability on uneven ground.
Best for:
- Construction sites
- Lumber yards
- Auto recycling yards
Key Features:
- Typically diesel-powered
- Available in 2-wheel or 4-wheel drive
- Often equipped with telescoping masts
How to Choose the Right Forklift Class
- Operating environment
- Indoor vs. outdoor use
- Aisle width
- Load capacity
- Lift height requirements
- Fuel preferences
- Maintenance considerations
If you're buying or leasing a forklift—or still unsure which class is right for your business—contact your local UniCarriers® Forklift dealer for expert guidance.
Frequently Asked Questions
Forklift classifications are categories established to group forklifts based on their design, power source, operating environment and intended application.
Class V forklifts are among the most commonly used because their pneumatic tires allow them to operate both indoors and outdoors.
Class I, Class II and Class III forklifts are electric-powered lift trucks designed for different warehouse and material handling applications.
Class II forklifts are specifically designed for narrow aisle and high-density warehouse environments.
Class V and Class VII forklifts are commonly used outdoors because their pneumatic tires provide improved traction on uneven surfaces.
The primary difference is tire type. Class IV forklifts use cushion tires for smooth indoor surfaces, while Class V forklifts use pneumatic tires that can operate on outdoor terrain.
Class VII forklifts are designed specifically for rough terrain applications such as construction sites, lumber yards and outdoor work environments.