OSHA also states that “a positive mechanical means” can be used to ensure that a truck is unable to move at the loading dock. The standards include setting brakes and wheel blocks, as well as using jack stands. Occupational Safety and Health Administration (OSHA) standards dictate that trucks must be immobilized during loading and unloading in order to ensure the safety of workers. OSHA Regulations Regarding Industrial Jack Stands Technicians use the trailer landing leg handle to lower the nose until the trailer makes contact with the stabilizers, and then raise the nose back up again to remove the stabilizers when loading and unloading are complete.
They require no maintenance, can be carried by hand, and are easy to slide in and out. Some models can also be used as trailer jacks with lifting capacities of 40,000 pounds.įixed height semi-trailer stabilizers are made with aluminum or steel, and add 75,000 pounds of proven load capacity to secure the trailer nose during loading and unloading. Resembling heavy-duty furniture dollies, semi-trailer jack stands are made of heavy gauge steel and feature extra large bases, solid rubber tires, and ergonomically friendly handlebars for easy handling and positioning.Īvailable with ratchet or gas-activated leveling systems and security locking safety pins, semi-trailer jack stands are designed with static load capacities of up to 100,000 pounds. Most importantly, they are built to handle higher weight limits of 20 (or more) tons via their single-cast steel construction, which has a higher weight capacity than welded or aluminum models. They also have wider bases, which protect bigger and heavier vehicles against tipping. Truck jack stands have heavier holding pins than car jack stands, as well as locking pins that serve as protection in case the locking mechanism fails. The ratchet-style is much easier to use and usually supports more weight, while the four-leg base provides more stability.
Made from steel, cast iron, or aluminum, car jack stands are available in two styles: a three-legged pin lock model and a ratchet lock version with four legs. While all jack stands perform the same general function, their structure and strength can vary based on the specific type of vehicle they are designed to support. How strong are jack stands, exactly? Take a look. Not only do jack stands protect you and your vehicle from falling floor jacks, but they also provide multiple points of contact that help you avoid tipping issues. Floor jacks also provide only one point of contact, which can leave your vehicle unstable and prone to tipping if you lift it from the middle. While hydraulic floor jacks can lift vehicles quickly and easily, they can (and likely will) occasionally fall - especially cheap models. This solid mechanical stop provides exponentially more support than the hydraulics of your floor jack. This is virtually impossible to do, as you would need to be able to lift the vehicle with your bare hands. While you can use most jack stand models to lift a vehicle upward, the stand’s ratcheting mechanism must be disengaged in order to lower it. Jack stands generally consist of an adjustable A-shaped base frame, a ratcheting post with a platform for supporting vehicles, and a ratchet handle mechanism. Not only do jack stands protect technicians who need to work underneath vehicles, but they also provide stability for personnel while loading and unloading cargo trailers. A jack stand is an essential tool for providing a safe work environment inside and underneath cars, trucks, or trailers.
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