Pulleys

These will benefit any hauling system by reducing friction and are essential when building a system to produce a mechanical advantage for lifting heavy loads. It must be remembered here that even in a simple lifting system, the anchor attached to the pulley will sustain a load equal to twice the load being lifted. In more complex hauling systems generating large amounts of mechanical advantage very high loads may be applied to the anchors ( and the pulleys ). For personal mountaineering, caving and paddling (bank rescue) use look at Petzl Swing Cheek or Fixed Side Pulleys or as an ultra light weight emergency item the Pulley wheel could be considered.

For rescue, industrial, and high rope course applications there are many options with either single or double wheels, with bearings, and with fixed or swinging sides.

If you are looking for devices designed for ziplines and Tyrolean traverses, see the Petzl Tandem series.

The versatile Minitraxion and the Protraxion are pulleys that incorporate a rope grab for simple and straightforward hauling. They can also be used for ascending ropes.