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Member of the US Navy secures the strap of a pallet during a training exercise. A ratchet tie-down strap. A tie down strap (also known as a ratchet strap, a lashing strap or a tie down) is a fastener used to hold down cargo or equipment during transport. Tie down straps are essentially webbing that is outfitted with tie down hardware. This ...
A ratchet (occasionally spelled rachet) is a mechanical device that allows continuous linear or rotary motion in only one direction while preventing motion in the opposite direction. Ratchets are widely used in machinery and tools. The word ratchet is also used informally to refer to a ratcheting socket wrench.
Clamping pressure is applied either through a mechanical method such as a screw or ratchet mechanism that tightens the band, or through the elastic nature of the band material itself. There are a range of styles of band clamp available for purchase, in particular the type used for framing as described above. Other web clamps include ratchet straps.
An air ratchet wrench is very similar to hand-powered ratchet wrenches in that it has the same square drive, but an air motor is attached to turn the socket drive. Pulling the trigger activates the motor which turns the socket drive. A switch is provided to change which direction the socket drive turns. [1]
A strap wrench is any of various types of wrench that grip an object via a strap or chain being pulled in tension around it until it firmly grips. High static friction keeps it from slipping. [1] Many strap wrenches have built-in handles. Others are made to receive the square drive of a ratchet wrench. The strap or chain can have various forms.
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