Tower Crane Slew Ring

Bottom rotation and top rotation.

Tower crane slew ring.

Attached to the top of the mast is the slewing unit the gear and motor that allows the crane to rotate. On the fixed tower type the slewing ring is situated at or near the top of the tower and the jib slews about the vertical axle of the stationary tower. Activating weathervaning or free slewing mode on a tower crane essentially allows the crane to slew with its full 360 degree radius freely in the wind just like a flag. On top of the slewing unit are three parts.

The crane counter weights are located closer to the tower when combined with the angled arm the luffing jib tower crane typically has a higher capacity then the hammerhead crane. Of 1000mm 2000mm 1250mm 1064mm are both standard. The slew ring drives the rotational movement of the slewing unit jib counter jib cab and tower top. In order that a tower.

Tower cranes are available with either fixed or slewing towers. Powered by the slewing gear drive the slew ring is fixed to a ball track and is made up of several hundred precisely machined gear teeth. Top slewing cranes are the large construction sites most strategic equipment for productivity. High capacity top slewing cranes on infrastructure jobs luffing jib cranes that construct supertall skyscrapers topless cranes reshaping our urban environment and hup self erecting cranes transforming residential construction.

The base connects to the mast or tower which gives the tower crane its height. The tower crane use a single row four point contact ball elements slewing ring 01 series and double row ball slewing bearing dia. Potain builds more than 60 types of tower cranes to fit a wide variety of job sites. Unlike the hammerhead crane the diagonal arm can move in and out from vertical to a 30 degree angle.

Whether on large infrastructure high rise jobsites crowded urban areas or wide open sites they make it possible to hoist and distribute loads high and far.