Weld-On Frames & Adapter Frames
Weld-on frames and adapter frames for excavators provide a technically suitable connection between buckets, attachments and quick coupler systems. At LIS®, you will find versions suitable for common systems such as Lehnhoff MS/Symlock, OilQuick OQ/SQ, Steelwrist S and Verachtert CW.
- MS & Symlock: Mounting solutions for MS01, MS03, MS21/25 and SW systems.
- OQ, SQ & S systems: Frames for OQ60, OQ65, OQ70, OQ80, SQ and S mounting systems.
- CW accessories: Weld-on lugs, wedge pockets and securing parts for CW20, CW30 and CW40.
Selection note: Check the quick coupler system, size class, mounting geometry, pin diameter, centre distance and existing attachment.
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Weld-on frames for excavators and quick coupler systems
A weld-on frame or adapter frame is used when an excavator bucket, grab, hammer or another attachment needs to be adapted to an existing quick coupler system. The system designation, excavator class and mounting geometry are decisive. Technical dimensions such as pin diameter, centre distance, inner width, base plate, material thickness and the version with or without hooks should also be checked.
Correct assignment of MS01, MS03, OQ, SQ, S and CW
For Lehnhoff-compatible mounting systems, the relevant options at LIS® include MS01, MS03, MS21/25, SW01, SW03 and Symlock. For OilQuick, Steelwrist and symmetrical S systems, versions for OQ60, OQ65, OQ70, OQ80, SQ60, SQ65, SQ70, SQ80, S60, S65 and S80 are in focus. For Verachtert systems, the range includes weld-on lugs, wedge pockets and securing parts for CW20, CW30 and CW40.
Related categories for buckets and quick couplers
Adapter frames and weld-on frames are often used to convert existing or new attachments to a defined quick coupler system. For mini excavators with MS01, MS03 or Symlock mounting systems, mini excavator buckets, mini excavator grading buckets and mini excavator cable buckets are particularly relevant. For larger machines and heavy-duty applications, you will also find excavator buckets and suitable components in the quick couplers and tilt couplers category.
Note on installation and identification
Weld-on frames, adapter frames and weld-on lugs are load-bearing connection components on the attachment. Welding work should be carried out professionally by qualified personnel. For clear identification, the quick coupler system, size class, existing mounting system, attachment dimensions and application should be checked. Brand names such as Lehnhoff, OilQuick, Steelwrist or Verachtert are used exclusively for the technical identification of the suitable mounting geometry. These are not original parts from the named manufacturers unless expressly stated.
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