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How does a steerable lift axle work?
Lift axles are also known as “cheater axles,” because unscrupulous truckers raise them or reduce air pressure on them while running loaded. The solution is the steerable lift axle. This type caster steers only when moving forward, so raises automatically when the driver shifts the truck into reverse.
What is the point of a lift axle?
Lift axles are auxiliary axles that are added to a truck to increase its weight carrying capacity.
What is steerable axle?
Hydraulically Steered: In this type, a couple of hydraulic single acting cylinders are attached at the fifth wheel of the vehicle which reciprocates with the relative motion between the hauling unit and trailer. This motion is transferred to hydraulic cylinders fitted to the axles in the trailer.
How do trucks lift their wheels?
Sometimes trucks will have an axle that they can lift up – a retractable axle. If it’s on the tractor unit it’s often called a pusher axle while if it’s on a trailer it’s often called a tag axle. Retractable axles are sometimes called dead axles, lift axles, cheater axles or drop axles.
Why do trucks have drop axle?
When you load a dump truck with gravel, the weight can easily exceed the per-axle limit, so the extra wheels/axles are lowered to make the truck legal. They are raised at other times to improve gas mileage and eliminate wear on the tires.
How does a cement truck empty?
Special concrete transport trucks (in-transit mixers) are made to mix concrete and transport it to the construction site. When the drum rotates in the other direction, the Archimedes’ screw-type arrangement “discharges”, or forces the concrete out of the drum.
How does cement not dry in the truck?
Also engineers use slightly higher amount of water while mixing the paste so that it do not set quickly. In case of the concrete trucks, the paste is formed by adding the water when it leaves the concrete plant, then in the way it is kept on rolling to avoid the concrete from setting.
When is a lift axle the right choice for Your Truck?
When it comes to applications such as dump trucks, flatbeds and cement mixers, on front and rear discharge mixers, as well as trucks in refuse applications, tank trucks in oil and gas, and trucks in municipal applications, lift axles are a popular option. “Lift axles are very different from steer and drive suspensions.
How many lift axles are allowed on a dump truck?
“In some states, multiple 8,000-lb. capacity lift axles are allowed on dump trucks. The ‘Super Dump’ is a fairly common spec in some states that optimizes the number of lift axles, axle spacing, capacity and uses the best product model to reduce overall vehicle weight and maximize payload.”
Can I use multiple lift axles to increase weight?
Heath went on to explain that local weight laws vary. “In some states, you are allowed to use multiple lift axles to increase your allowable Gross Vehicle Weight Rating (GWVR) and increase payloads. In others, there are limitations to the allowable number and spacing,” he continued.
Do big lift kits have axle issues?
Big lift kits give you at least five inches of lift, and their axle issues are a different beast. That’s because big lift kits almost always come packaged with extended axles.