Electronics > Projects, Designs, and Technical Stuff

Insulated crimp terminal diameter issue, KNIPEX / Molex / TE / AMP

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mzzj:

--- Quote from: wizard69 on February 25, 2020, 02:54:19 am ---

I'm with Bent on this one, this based on a long career in industry.   The crimps that even brand new crimpers, for insulated terminals, produce are terrible.If yu have to use crimp terminals you are far better off with non insulated ones and a crimper designed for them.

--- End quote ---
Define  "terrible"
Sounds like you got either mismatched tool/terminal set or low quality terminals. No-name cheapos can be anything (or "budget line" brand names)
Same applies to fold-tab or F-crimp terminals..

I was curious how good the Abico terminals sold on local "auto store" are and tested the crimps with fishing scale and bucket of weights.
Crimped with the cheap knipex clones the pull-out force on 1.5 mm^2 wire exceeded the military standard requirement (50 lbs for 16 AWG)
https://www.cirris.com/learning-center/general-testing/special-topics/228-crimp-pull-testers-pullout-force-per-wire-size

OK, wire was slightly oversize (16 AWG vs 1.5 mm2) but still  ahead of the "commercial" standards.
AFAIK automotive USCAR-21 standard would satisfy with 170 N or ~38 lbs

2N3055:

--- Quote from: nctnico on February 16, 2020, 10:33:33 pm ---I have given up looking at the color codes a long time ago. I make a test crimp and if I can pull the wire out then I use the smaller opening.

--- End quote ---

This. Same here.

And Molex are assholes, with their 500000 USD custom crimp tools...
I suggest you change title. Knipex is at no fault here. It's Molex that is not standard.
I use Knipex and Pressmaster and they are both excellent.

iroc86:

--- Quote from: 2N3055 on February 25, 2020, 08:16:29 am ---And Molex are assholes, with their 500000 USD custom crimp tools...
I suggest you change title. Knipex is at no fault here. It's Molex that is not standard.
I use Knipex and Pressmaster and they are both excellent.

--- End quote ---

Haha yes, I do question Molex's motives when they sell a single $500+ crimp tool that's designed to crimp one part number. That's what turned me on to TE/AMP and their PIDG stuff--slightly more expensive than Molex, but the tooling standardization is definitely worth something (especially in a DIY/hobbyist capacity where one cannot afford a dozen different crimp tools).

I updated the title per your suggestion to capture the other brands.

Out of curiosity, would you mind sharing the KNIPEX tooling you're using for crimping?

mzzj:
18 AWG wire+ chinesium crimpers + Abiko terminals:
https://imgur.com/a/JRrsZQS

Crimping action is pretty stiff and crimp anvils wont reach each other. Looks like even the wire insulation stripped off.

2N3055:
KNIPEX 97 52 36 for insulated terminals. For others I use Pressmaster modular..

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