Transcription of INSERTS FOR PLASTICS
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INSERTS FOR PLASTICS
LF = F x L INSERTS FOR PLASTICSP lasticInsertBoltFriction ForceForceLTo rqueF x LAxial Load(Tension)To rque = Coefficient of Friction =To rque x Bolt WHY INSERTS ? INSERTS provide reusable threads and secure tight threaded additional benefit is high load carrying LOAD CARRYINGThe load carrying ability of the joint is enhanced by the larger diameter of the Insert as compared to the screw. INSERTS are generally twice the diameter of the screw and that increases the shear surface fourfold. Pull-out resistance can further be enhanced by increased Insert BYSTRESS RELAXATIONA common problem with bolted joints in plastic applications is that plastic is susceptible to creep or stress relaxation.
1 TECHNICAL SUPPORT Since SPIROL’s inception in 1948, we have lead the industry in application engineering support for fastening, joining and assembly. Our Inserts are designed to maximize and balance tensile (pull-out) and rotational
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