Moulded inserts
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Böllhoff makes the IMTEC® moulded inserts in two principal derivatives. The IMTEC® CO thread insert is designed an asymmetric rolled stainless steel A2 (option A4) wire which is mainly used for components with blind hole threads. The wire is coiled to form a fixed bushing with at least one flange-type extension. In the forming process, the fasteners are magnetised for placement on magnetic core pins.
Benefits include:
• Maximum usable thread length
• Corrosion and acid resistance
• Increased technical cleanliness (residual dirt minimisation)
• High extraction force due to an optimisation of flank covering in plastics
• Weight reduction of the component
The second product type is the IMTEC® CF thread inserts with a double flange design that is produced from steel by cold forming. The in-moulding technology requires particularly accurate thread inserts. The deformation area on the IMTEC® CF allows for precisely adjusting the length of the thread insert according to the mould dimensions. Upon closing, the parts of the mould cleverly compress the IMTEC® CF and precisely adjust the length of the component to a tolerance of ± 0.15 mm.
IMTEC® CF is primarily intended for components with through hole threads and its benefits include:
• Very large flange diameters possible
• Deformation area for length adjustment of the insert; close length tolerances < L ± 0.05 mm
• Torque resistance by hexagonal design or knurls
• Pull out resistance by providing significant under cuts
• No metal-cutting operation
• Also feasible as compression limiter
Böllhoff is pleased to work with and assist engineers with design and feasibility studies for any moulded-in fastening challenges they encounter.
