Lehnhoff SQ Quick Coupler

Designed to provide quick attachment changes with “plug-and-play” capabilities, added safety and time savings resulting in increased productivity – Lehnhoff fully automatic quick coupler options are a smart choice for many types of excavators. We can help you select the right quick coupler for your industry whether it be in construction, demolition or mining, converting your excavator from a digging machine to a into a multi-functional tool carrier.


  • Quick coupler valve block and corresponding adaptors can be configured to accommodate any hydraulic attachment.  The symmetrically arranged short-stroke valves provide maximum flow and include a hydraulic tensioning device to ensure firm connections, an integrated case drain line, and an optional electrical feed through (EF). The symmetrical design of the valve block also allows for mounting of buckets in standard or shovel mode.
  • Designed as fully automatic systems (the quick coupler is also available without valve technology)
  • Complements the symmetric concept of the S-standard (the open industry standard for the interface between excavator and attachment) with an ingenious feature: a symmetric valve block that allows attachments such as a tilting bucket or a crusher bucket to be operated hydraulically in shovel mode
  • Built-in protection function prevents misdirected engagement with attachments not intended for reverse mode
  • Engineered internal block depressurization unit increases the service life of the SQ valves and reduces the installation efforts and costs significantly.
  • Lenhnhoff-Safety-Control (LSC) offers control of all operating states of the quick coupler from the driver’s cab. If LSC detects a faulty connection, it will display a warning so the operator can take action.

* Rough classification. Suspension and maximum break-out force of excavator must be considered
** Dependent upon excavator specific suspension