The Floor Jack 3T is a tool for lifting heavy objects. […]
The Floor Jack 3T is a tool for lifting heavy objects. Floor jacks are commonly used for shop floor work, but they are also used in vehicle emergency situations such as changing tires or repairing the interior.
An average car owner usually has a conventional jack to handle an emergency, this uses a screw mechanism. Most of them are unfamiliar with floor jacks that use high-pressure fluid displacement and are more proficient than traditional hydraulic jacks. Floor jack 3t is usually associated with specialized automotive machinery and racing cars, but these jacks are also available for home use. In addition, almost everyone can use them with caution. There are two types of floor jacks.
Mechanical floor jack 3t uses a screw mechanism to apply force to the jack body and raise the vehicle. The short thread distance (or pitch) of the screw has the mechanical advantage of being able to increase the heavy load with moderate effect. The trade-off is that the screw must be rotated many times to achieve a small amount of lift. These are the jack types you found in the roadside kits for vehicles.
Hydraulic floor jack 3t uses valves, hydraulic pistons and a variety of different levers to gain mechanical advantage and boost the vehicle. The position of the handle of a floor jack allows the hinge to give the user a huge mechanical advantage from the start. For each force applied to the floor jack handle, an exponentially greater force is applied to the hydraulic piston system. The hydraulic system consists of a reservoir, two cylinders of different diameters and various flow control valves. The mechanical force from the jack handle is applied to a small hydraulic piston and then amplified to a greater force due to the difference in diameter of the hydraulic chamber.
As long as the valve is in the closed position and the piston seal is in good working condition, the floor jack will remain in the raised position and hydraulically maintained. Please note that it is not recommended that the vehicle remain in the raised position of the hydraulic jack for a period of time and should not be operated in a vehicle supported only by hydraulic jacks. It is best practice to lower the vehicle to a jack stand placed under the axle or lower control arm.