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Selecting the Correct Crimp Terminal for
the Job
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Processes for Crimping
• Wire stripping • Selecting the correct terminal • Selecting the correct crimping
tool
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Stripped Wire
• Solid Wire
• Stranded Wire
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Damaged Wire Criteria from 620
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Examples of Damaged Wires
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Stripping Damage
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7 Molex Quality Crimping Handbook
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Selecting the Terminal
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AMP Standard Terminals and Splices Catalog
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Selecting the Terminal
• Verify wire size and terminal size • Verify the stud diameter to its
application • Determine whether or not
insulation should be captured for stress relief.
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Terminal Pull Forces The following charts show the UL and US Government specifications (MIL-T-7928) for wire pull-out forces of various wire sizes. The tensile strength is shown in lbf (pound-force). It indicates the minimum acceptable force to break or separate the terminal from the conductor.
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Selecting the Crimping Tool
•
Adapted from Working with Wire , PAUL SMITH
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Selecting the Crimping Tool
• Full cycle or diagonal type crimpers.
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More than One wire in the Terminal
• How to decide the equivalent wire gage with two wires? – Compute the total CMA
• Add up the CMA of each conductor for a total CMA of the combined conductors
• Compare this number to the wire chart to find the best match
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More than One wire in the Terminal
• If there are two wires going into a single contact or terminal, and if they are the same wire gage, the following rule will provide the combined equivalent wire gage.
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More than One wire in the Terminal
Rule of Threes • Two 22 awg wires into a single
contact, • 22 awg -3 = 19 awg is the
estimated size of the terminal to be used.
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16 Molex Quality Crimping Handbook
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Thank You Any Questions?
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Further Information For questions regarding this webinar, please contact
Leo Lambert at [email protected] or call at 800-643-7822 ext 215
For information on any of EPTAC’s or IPC’s Certification Courses, please visit our website at
http://www.eptac.com
Fore ease of getting the EPTAC website, We now have an APP
get our APP at www.Eptacapp.com
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