A hydraulic trolley jack lifts heavy objects such as cars, trucks, tanks, houses, trailers, trees, pallets and even large rocks. Basically, trolley jacks are narrow and long so they can easily fit underneath large, heavy objects. They contain at least four wheels with roller bearing wheels in front. The rear wheels are typically swivel ball bearing wheels which allow the unit to be easily maneuvered into position as needed. A long metal handle attaches to the rear of the unit. The handle is used to place the jack into position and it is also how you will operate the lifting mechanism.

The mechanism that lifts the vehicle is called a saddle. Some saddles are adjustable which means they can be raised to a height that is closer to the lift point or position on the vehicle. Some of the saddles have a rubber pad on the surface to protect whatever is being lifted. The jacks have a hydraulic pump that takes care of all the heavy lifting. When the handle is cranked, the jack begins to lift the vehicle. A quick lift jack is also available which can lift a vehicle with three movements of the handle.

Normally the required clearance for a trolley jack is six and a half inches beneath the car. If you happen to be working with a vehicle that sits lower to the ground, you will need a special low profile aluminum jack which only needs three and a half inches of clearance. Most jacks come with a quick release valve to lower the jack and vehicle down quickly. Many designs feature an easy carry handle so you can put the jack into the trunk of your car if needed. The normal weight of a trolley jack is around 30 pounds. If weight is a consideration to you, you can also choose from one of the many newer more lightweight models on the market which only weigh about 20 pounds. Such jacks are very portable, easy to store and even easier to operate. You will find that they are also the perfect size to fit into a utility box or the jack compartment of most vehicles.

Most models of trolley jacks are made from very strong and durable materials. Some are made from steel, aluminum, or even a blend of both materials. The standard baked enamel finish is beautiful, shiny, and easy to care for or keep clean even when used frequently.

You can find hydraulic trolley jacks priced anywhere from $30 and up. The more portable the unit or the more features it offers, the more expensive it will be. Regardless of the price, most features are designed to make automotive repairs easier for you so they are well worth the extra investment. You will be able to work faster and in a much safer environment with the help of a quality floor jack model.