STAUFF Weld Plate LBBU-SP
The STAUFF Weld Plate LBBU-SP (Light Series) is a technical component developed for the installation and secure fastening of hydraulic systems. Manufactured from phosphated carbon steel (material code W2), it is available for STAUFF Groups 1 to 3 and 1D to 3D. It ensures precise connections thanks to ISO Metric M8 or Unified Coarse 5/16-18 UNC threads. The system is fully compatible with LBBU-HUE Series bushings for Type SP mounting.
The available product codes (all standard plate codes included in the document) are: LBBU-SP-1-M8-W2, LBBU-SP-1-U5/16-W2, LBBU-SP-2-M8-W2, LBBU-SP-2-U5/16-W2, LBBU-SP-3-M8-W2, LBBU-SP-3-U5/16-W2, LBBU-SP-10-M8-W2, LBBU-SP-1D-U5/16-W2, LBBU-SP-2D-M8-W2, LBBU-SP-2D-U5/16-W2, LBBU-SP-3D-M8-W2, LBBU-SP-3D-U5/16-W2.
The STAUFF Weld Plate LBBU-SP is part of the Light Series (Light Series LBBU) dedicated to fastening systems for pipes and hydraulic components. The standard construction material, identified by code W2, is phosphated carbon steel. This material configuration ensures high mechanical strength and provides a suitable base for structural welding operations. Alternative materials and surface finishes are available upon specific request to meet special application requirements.
The range covers STAUFF Groups 1 to 3 and 1D to 3D, providing precise dimensional scalability. The plate width (dimension B) remains constant at 14 mm (0.55 in) for all groups, as does the height (dimension H) at 5 mm (0.20 in). The overall length (dimension L1) varies according to the group: from 34 mm (1.34 in) for Group 1 up to 86 mm (3.39 in) for Group 3D. The centre distance (dimension L2) is 20 mm for Groups 1, 2, 10, 1D and 2D, while it increases to 30 mm for Groups 3 and 3D.
Each STAUFF Weld Plate LBBU-SP is equipped with threaded elements for securing the clamps. Standard catalogue options include ISO Metric M8 thread (code M8) and Unified Coarse 5/16-18 UNC thread (code U5/16). The product design also allows alternative thread sizes, such as M6 and 1/4-20 UNC, to be integrated upon request in order to meet specific design requirements.
The weld plate mounting system (Type of Mounting SP) operates in conjunction with LBBU-HUE Series bushings. These bushings feature standardised outside diameters (ØD1 equal to 9 mm and ØD2 equal to 12 mm) and variable lengths L ranging from 13.5 mm up to 38.8 mm depending on the group and mounting type. In addition to standard weld plate mounting (SP), LBBU-HUE bushings can be integrated with Hexagon Rail Nuts (Hexagon Rail Nut SM-1-5D – SM mounting) or used for direct panel installation without a plate (PM mounting).
The standard order code follows a strict logical structure: the prefix “LBBU-SP” identifies the Light Series weld plate; the following field indicates the STAUFF Group (e.g. 1, 2, 3, 10, 1D, 2D, 3D); this is followed by the thread designation (M8 or U5/16) and finally the material code (W2 for phosphated carbon steel).
| Feature | Value |
|---|---|
| Series | Light Series (LBBU) |
| Component Type | Weld Plate (SP) |
| Supported STAUFF Groups | 1, 2, 3, 10, 1D, 2D, 3D |
| Standard Material (Code W2) | Carbon Steel, phosphated |
| Standard Thread (Metric) | ISO M8 |
| Standard Thread (UNC) | 5/16-18 UNC |
| Alternative Threads (On Request) | M6, 1/4-20 UNC |
| Width (B) | 14 mm (0.55 in) |
| Height (H) | 5 mm (0.20 in) |
| Thickness (S) | 10.3 mm (0.41 in) |
| Product Code | STAUFF Group | Thread | Length L1 |
|---|---|---|---|
| LBBU-SP-1-M8-W2 | 1 | M8 | 34 mm |
| LBBU-SP-1-U5/16-W2 | 1 | 5/16-18 UNC | 34 mm |
| LBBU-SP-2-M8-W2 | 2 | M8 | 39 mm |
| LBBU-SP-2-U5/16-W2 | 2 | 5/16-18 UNC | 39 mm |
| LBBU-SP-3-M8-W2 | 3 | M8 | 57.5 mm |
| LBBU-SP-3-U5/16-W2 | 3 | 5/16-18 UNC | 57.5 mm |
| LBBU-SP-10-M8-W2 | 10 | M8 | 50 mm |
| LBBU-SP-1D-U5/16-W2 | 1D | 5/16-18 UNC | 50 mm |
| LBBU-SP-2D-M8-W2 | 2D | M8 | 59 mm |
| LBBU-SP-2D-U5/16-W2 | 2D | 5/16-18 UNC | 59 mm |
| LBBU-SP-3D-M8-W2 | 3D | M8 | 86 mm |
| LBBU-SP-3D-U5/16-W2 | 3D | 5/16-18 UNC | 86 mm |