Lisäakseli

Lisäakseli, often translated as "additional axle" or "tag axle," is a component found on some vehicles, particularly trucks and buses. Its primary purpose is to distribute weight more evenly across the vehicle's chassis and tires. This distribution of weight can lead to several benefits, including increased payload capacity, reduced tire wear, and improved braking performance.

When a vehicle is heavily loaded, the weight can concentrate on the existing axles, potentially exceeding legal weight limits or causing excessive stress on the tires and suspension. A lisäakseli, which is typically a non-driven axle, adds another point of contact with the road, thereby spreading the load over a larger area. This is especially useful for vehicles that frequently carry heavy or bulky cargo.

The implementation of a lisäakseli can vary. Some are fixed, while others are steerable or liftable. A steerable lisäakseli can improve maneuverability, especially in tight spaces, by allowing the axle to turn with the road. A liftable lisäakseli can be raised off the ground when not needed, such as when the vehicle is empty, to reduce tire wear and improve fuel efficiency. The addition of a lisäakseli is a common modification for vehicles operating in industries that require the transport of significant loads, such as logistics, construction, and waste management.