Nach meinem besten Wissen wird es in der Landwirtschaft und im Baugewerbe weitgehend verwendet, um die maximale Höhe zu bezeichnen, bis zu der ein Lader oder ähnliches Gerät seinen Eimer anheben kann, um die Ladung abzukippen.

... seems to be used quite frequently by manufacturers of such equipment/machinery.

Compare, for example,
https://www.claas.de/produkte/lader/torion-mittel (German)
https://www.claas.co.uk/products/loaders/torion-medium (English)
Please click on "Read on" on these two pages to open the "Hubgerüst"/"Mast" section with the tech spec table.

Additional references in English:

https://www.liebherr.com/external/products/products-assets/3... (see the table on pages 18 and 19)

https://www.machinerytrader.ie/blog/plant-equipment-news/202...
"Likewise, the TORION 639’s standard 2.98-m (9.78-ft) dump-over height and 3,900-kg (8,598-lb) max tipping load change to 3.17 m and 3,600 kg (7,937 lbs) when high-lift kinematics are selected."

https://www.forconstructionpros.com/equipment/attachments/ar...
"Liebherr offers general-purpose buckets in rehandling and excavation styles, as well as a variety of light material, side dump, high-dump (roll-out) and multi-purpose buckets. "There are certainly advantages to using buckets such as light material buckets, high-dump or even side-dump buckets in applications rather than using a general-purpose bucket," says Nick Rogers. "For instance, if a contractor handling a light material needs a little more dump-over height in a specific situation, a high-dump (roll-out) bucket would be an ideal match for the application."

--------------------------------------------------
Note added at 21 hrs (2023-07-07 07:50:49 GMT)
--------------------------------------------------

"Dump clearance" is obviously correct, too. See, for example, https://www.deere.com/en/construction/publications-and-artic...