VNA and NA Trucks: There are some truck models which have VNA or very narrow aisle features or narrow aisle or NA features. Nearly all counterbalanced trucks require a minimum of 11 feet of aisle width in order to operate efficiently and safely. NA trucks on the other hand, could operate in narrow aisles that are 8 to 10 feet wide. Furthermore, very narrow aisle or VNA trucks could operate in aisles that are 6 feet wide.
The advantage of using an NA and VNA truck over a standard lift is that it makes it possible for warehouses to be constructed with narrower aisles. The wider aisles within the warehouses enable for more storage of things in a particular area, that improves cube use. The loads transported by Very Narrow Aisle and NA trucks typically are limited to approximately 3000 and 5000 lbs. Reach trucks are capable of operating in narrow aisle. Rotating mast trucks, order selectors and turret trucks can work within very narrow or narrow aisles, depending on the specific unit.
Reach Trucks: Specially made for retrieval and storage, reach trucks are made with outriggers and telescoping forks which enables the operator to pick up and retract a load over the outriggers. These units are not the best suited for moving loads quickly over long distances nor for loading and unloading trucks. Like the order selector, reach trucks can be available for lifting heights which are higher than 30 feet.
Turret Trucks and Rotating-Mast Trucks: Rotating-mast trucks are similar to regular sit-down forklifts. The main difference is that their masts can rotate in one direction, to a 90 degree angle. This feature enables them to operate in a narrow aisle condition. Turret trucks can work in narrow or very narrow aisle places. Like order selectors, these machines could elevate both the load and the operator. Moreover, they can enable the operator to deal with loads on either side of an aisle without re-entering and exiting the aisle.
Turret trucks are usually rail or wire guided when they are used within very narrow aisles. Therefore, the operator doesn't need to focus any energy on their driving skills and could concentrate on the work load at hand. Since turret trucks are considered "operator-up" trucks, they can be utilized for item and case picking as well as full pallet handling.