GABELKOPF

551 985 74 CLEVIS Acting as a crucial pivot point, this CLEVIS connects a hydraulic Zylinder rod to a moving part of the drill rig's positioning system. You will typically find it at the end of a boom or feed Zylinder, where it allows for the angular movement necessary to position the drifter accurately for drilling. Its job is to transfer immense pushing and pulling forces reliably.

The integrity of this connection is directly tied to both operational safety and drilling performance. Wear in the CLEVIS bolzen hole can cause unwanted play in the entire ausleger structure, leading to inaccurate collaring and increased stress on other bolzens and buchses. A sudden failure of a worn or cracked CLEVIS could result in an uncontrolled drop of the vorschub or ausleger, creating a serious hazard.

During routine inspections, check the CLEVIS for any signs of cracking, especially around the bolzen bore. Also, look for elongation or an 'oval' shape in the hole, which indicates significant wear. If you notice excessive slop or hear clunking sounds from the linkage during operation, this component should be inspected immediately.