HRS AP109A - Wire Stripping Best Practices

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5. Basic outline of crimp operation
General description of the crimp process.
5-1.Congurationandfunctionofcrimpcontact
(2) Function of each part of crimping contact
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Wire barrel...............
(conductor crimp sec-
tion)
U-shaped section of the contact which is compressed around the conductors with a
mechanical force. Conguration and dimensions after the completion are critical for
maintaining mechanical and electrical performance of the contact.
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Insulation barrel....... U-shaped section of the contact which is compressed around the outer insulation of the
wire. Its function is to act as a strain relief, preventing transmission of any pull force on
the wire to the conductor crimp section.
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Lance.......................
(contact retention tab)
Retains the contact in the applicable insulator (socket). Any deformation of the lance
may prevent retention or extraction of the terminated wire from the insulator body (sock-
et).
Note : Some contacts may NOT have lance and be retained in their respective housings
by other means.
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Bellmouth (are)....... Critical conguration of the crimp section of the contact whose function is to avoid
breakage of the terminated conductor and assure strength of the crimp.
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Serrations................. Deformations or cross-serrations of the material inside the wire barrel whose function
is to break possible oxidation lms on the contact and conductors during the crimping,
thus assuring stable electrical connection.
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Contact section.......... Conguration of the contact which will make electrical and mechanical connection with
the corresponding mating contact.
(1)Congurationofcrimpcontact
Insulation barrel
Serrations
Contact section
Wire barrel
Bellmouth
Conductor Outer insulation
Lance (retention tab)