VNA and NA Trucks: There are some truck models that have very narrow aisle or VNA features or NA or narrow aisle features. Most counterbalanced trucks need at least 11 feet of aisle width to be able to operate safely and efficiently. Na or Narrow Aisle trucks on the other hand, could operate in narrow aisles which are 8 to 10 feet wide. Also, VNA or very narrow aisle trucks can operate in aisles which are 6 feet wide.
The advantage of using a VNA and NA truck over a traditional lift is that it makes it possible for warehouses to be built with narrower aisles. The wider aisles in the warehouses enable for more storage of products in a particular space, that improves cube use. The loads moved using Narrow Aisle and Very narrow Aisle trucks normally are limited to approximately 3000 and 5000 pounds. Reach trucks can operate in narrow aisle. Rotating mast trucks, order selectors and turret trucks can work within narrow or very narrow aisles, depending on the specific unit.
Reach Trucks: Reach trucks are especially made narrow-aisle trucks which are made for storage and retrieval. They are made of outriggers and telescoping forks that allow the operators to lift a load and then retract it over the outriggers. These units are not suitable for moving loads quickly over long distances nor for loading and unloading trucks. Like the order selector, reach trucks could be available for lifting heights which are higher than 30 feet.
Rotating-Mast Trucks and Turret Trucks: Rotating-mast trucks are similar to regular sit-down forklifts. The main difference is that their masts are able to rotate in one direction, to a 90 degree angle. This feature allows them to function within a narrow aisle situation. Turret trucks are able to operate in narrow or very narrow aisle locations. Like order selectors, these machines could lift both the cargo and the operator. Furthermore, they could 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 utilized in very narrow aisles. Therefore, the operator can concentrate on the work load at hand as they doesn't have to focus any energy on their driving skills. Because turret trucks are considered "operator-up" trucks, they are able to be utilized for item and case picking in addition to full pallet handling.