KB Self-locking press-fit threaded bushes
KB Self Locking is a self-locking threaded bushing, also known as a pressure insert, that allows for threaded seating on materials with even thin thicknesses, such as marble, granite, ceramics, laminates, and quartz. It is a mechanically retaining bushing that does not stress or create tensions in the material in which it is applied.
In the stone industry, it is a system used to attach sinks to natural stone or ceramic/quartz tops, or to attach stone or other material slabs to ventilated walls, and is also used for assembling furniture and interior design elements.
The bushing is inserted into a cylindrical hole (drilled using a standard drill) with a simple pressure without the use of adhesives. It consists of a stainless steel threaded sleeve (austenitic series 300 type) with a series of teeth crowns. The bushing does not create protrusions behind the slabs in order to optimize space.
The main applications of the KB Self Locking bushing are:
- production of kitchen tops, which speeds up work by quickly and cleanly securing sink fixtures without the use of chemical adhesives;
- production of furniture and interior design elements;
- installation of ventilated walls where bushings allow for superior fixing compared to the use of glue or resin.
Available in different sizes:
KB06/08/1N
- Thread M6
- Minimum thickness 8 mm (0.31”)
- Number of crowns 1
- Insert height 5 mm (0.20”)
- Hole depth 5,5 mm (0.22”)
- Pull resistance 1,1 kN
KB06/10/2N
- Thread M6
- Minimum thickness 10 mm (0.39”)
- Number of crowns 2
- Insert height 6 mm (0.24”)
- Hole depth 6,5 mm (0.26”)
- Pull resistance 2,1 kN
KB06/12/4N
- Thread M6
- Minimum thickness 12 mm (0.47”)
- Number of crowns 4
- Insert height 8 mm (0.31”)
- Hole depth 8,5 mm (0.33”)
- Pull resistance 4,1 kN
KB06/18/4N
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- Thread M6
- Minimum thickness 18 mm (0.71”)
- Number of crowns 4
- Insert height 13 mm (0.51”)
- Hole depth 13,5 mm (0.53”)
- Pull resistance 5,5 kN
How to use these KB Self-locking press-fit threaded bushes?
- Drill with a 12-diameter diamond core bit a hole deep enough to let the insert enter
- Check that the hole is clean and no larger than 12mm
- Insert the bush pressing it by a rubber mallet
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