Is there specification for RJ45 pins crimp wire depth?

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Smile
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Joined: Mon Dec 27, 2004 1:04 am

Is there specification for RJ45 pins crimp wire depth?

Post by Smile » Thu Apr 16, 2015 10:21 am

Hello, as you know there are many crimp tools for RJ45. Some are cheap some expensive.

I'm looking for specification of how deep should the golden pins be pushed into the wires.
See photo here:

Image

The image is not mine, however illustrates what I mean.

Some tools push the pins just deep enough that they touch the plastic , but not pierce it.
Some tools push the pins into the plastic also, and that seems overkill for me.

So is there specification for this?

P.S. Sorry for my bad English.

xan_user
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Re: Is there specification for RJ45 pins crimp wire depth?

Post by xan_user » Thu Apr 16, 2015 6:45 pm

the contact pins should always be recessed below the plastic. the blades should always penetrate the core of each wire solidly. a good tool has a "click" when you've pushed hard enough. you cant really go too far....

Smile
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Re: Is there specification for RJ45 pins crimp wire depth?

Post by Smile » Fri Apr 17, 2015 12:35 pm

xan_user wrote:the contact pins should always be recessed below the plastic.
I agree the pins should be recessed. However I was asking about the other side that penetrates the wires.

xan_user wrote:the blades should always penetrate the core of each wire solidly.
Should the blades penetrate the wire and exit from another side and dig into the plastic?
I do not think so.
xan_user wrote:a good tool has a "click" when you've pushed hard enough. you cant really go too far....
Well the tools should have fluid motion, repeatability etc. The "click" tools I'm not familiar with.

cmthomson
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Re: Is there specification for RJ45 pins crimp wire depth?

Post by cmthomson » Fri Apr 17, 2015 3:42 pm

This is a tool you should not be cheap about. The headaches induced by marginal cables hurt too much.

A good crimp tool will resist your squeezing until it gets to a calibrated pressure on the connector and wire, then "click" and seem to collapse in your grip. This is a good thing, but it costs extra to manufacture properly.

xan_user
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Re: Is there specification for RJ45 pins crimp wire depth?

Post by xan_user » Fri Apr 17, 2015 4:42 pm

a good set wont open back up until you've fully crimped the end properly.
the click is the release of the ratchet after completing the crimp.

I prefer these,
http://www.amazon.com/Platinum-Tools-10 ... B00939KFOU
or at the very least,
http://www.amazon.com/Klein-Tools-VDV22 ... pd_cp_hi_1

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Re: Is there specification for RJ45 pins crimp wire depth?

Post by Smile » Sat Apr 18, 2015 1:38 am

Thank you for the link to the tools. While the ratchet helps no doubt the equal pin pressure is all that is required that pins penetrate evenly all across the RJ45 connector.

Getting back to the topic is there specification for this? Like how many millimeters the pins should be recessed from top of connector or etc. etc.

Tools are made to tolerances to make industry standard plugs, but I can't find the tolerances.

Pigpen
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Re: Is there specification for RJ45 pins crimp wire depth?

Post by Pigpen » Sat Apr 18, 2015 4:27 am

For specs you might find something in EIA/TIA under 8P8C.
Look at a pre-made patch cord to get an idea of where the pins should be compressed to. Poorly made tools will sometimes over shoot the depth and cause the pins to lean to the side or will not compress enough resulting in no connection being made.
Another thing to watch for is your plugs being designed for solid or stranded wire, mixing these will also result in poor connections. Patch cords are usually stranded for flexibility and station cabling will be solid in most cases.

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Re: Is there specification for RJ45 pins crimp wire depth?

Post by Smile » Sat Apr 18, 2015 6:43 am

Pigpen wrote: Another thing to watch for is your plugs being designed for solid or stranded wire, mixing these will also result in poor connections. Patch cords are usually stranded for flexibility and station cabling will be solid in most cases.
I also read wikipedia article on different connectors. But nowdays I see only universal like the ones here
http://www.aliexpress.com/store/product ... 42996.html

Now what if I use Cat6 on Cat5 FTP cabling, will it work better?

Arbutus
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Re: Is there specification for RJ45 pins crimp wire depth?

Post by Arbutus » Sat Apr 18, 2015 5:22 pm

The plugs come in these 3 insulation displacement types:

solid wire
stranded wire
combo stranded/solid

Solid wire connectors make the most reliable connections for plenum or riser cables.

Once you have used the EZ plug connectors you will never want to go back to the cheapies.

Look here to see what the EZ connectors look like:
http://www.cdw.com/shop/products/Black- ... 10.aspx#PO

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Re: Is there specification for RJ45 pins crimp wire depth?

Post by Smile » Sun Apr 19, 2015 5:35 am

My friend sent me this image:

Image

@Arbutus

I will take a look at those, any shops in EU? Or should I look in ebay?

Smile
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Re: Is there specification for RJ45 pins crimp wire depth?

Post by Smile » Sun Apr 19, 2015 5:51 am

I investigated the EZ-RJ45 and I wonder if the exposed copper wire from the front will not oxidate?
The price is another thing, these are not cheap.

And third I think anyone can turn regular quality connector to EZ one just by drilling holes with micro precision drill !

P.S. I just tried it, I drilled regular RJ45 to make EZ-R45, it works. But I still think exposed copper is bad thing, after all patch cords are sealed for a reason.

Smile
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Re: Is there specification for RJ45 pins crimp wire depth?

Post by Smile » Sun Apr 19, 2015 12:13 pm

It seems Pro'sKit makes this nice crimp tool: http://www.proskit.com.tw/en/product/pr ... K-3003FD14

However there are many china clones, with different handle color and bad quality:
http://g04.s.alicdn.com/kf/HT1fstLFNlaX ... gOFbXP.jpg
http://www.jiaju.com/shoudonggongju/product178455/

Abula
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Re: Is there specification for RJ45 pins crimp wire depth?

Post by Abula » Sun Apr 19, 2015 1:18 pm

xan_user wrote:a good set wont open back up until you've fully crimped the end properly.
the click is the release of the ratchet after completing the crimp.

I prefer these,
http://www.amazon.com/Platinum-Tools-10 ... B00939KFOU
or at the very least,
http://www.amazon.com/Klein-Tools-VDV22 ... pd_cp_hi_1
The Platinum Tools Ez setup, makes crimping so easy, really makes it worth it, i usually had like 70% success with standard tools, there were always recrimping to do.... but wiht platinum tools, i get like 99% right, rarely i have to re do the crimping on a line. Well worth the extra cost, at least for me.

Smile
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Re: Is there specification for RJ45 pins crimp wire depth?

Post by Smile » Mon Apr 20, 2015 2:36 am

Proskit replied to my email that even the "clones" I said are true proskit tools. That is very strange because the quality even from photos is not there or Proskit has photoshopped the images on their site. Or it's not actual tools but renderings of the tools.

Given the 0.1mm repeatability required in RJ45 crimping work from image above. I think the more moving parts there are in a tool the worse repeatability of it.

So tools like the http://www.proskit.com.tw/en/product/pr ... CT012#spec
That are very expensive should be not reliable. I understand the increased price over the single moving point tools like http://www.proskit.com.tw/en/product/pr ... =UCP-376TX
because all parts must be way more precision made.

That's why my noname TAIWAN tools like this
http://www.proskit.com.tw/en/product/pr ... =UCP-376CX
works better than something like this (notice no ratchet) https://encrypted-tbn3.gstatic.com/imag ... Emt3Hvx2bg

So I think I will go for
http://www.knipex.com/index.php?id=1216 ... oupID=1301
And yes I do not like the 2x more expensive for reasons above
http://www.knipex.com/index.php?id=1216 ... oupID=1302

Hope to hear your suggestions etc.
The cat 5e FTP cables made with similar tool like http://www.proskit.com.tw/en/product/pr ... =UCP-376CX
wort at 1150Mbps compared to same length patch cord that works at 1200Mbps. So one does not need 70$ or 70Eur crimp tools to make it right. But one needs digital caliper to check the proper depth of pins and magnifying glass to inspect the connectors to make sure even if you paid 70$ for crimp tool to see if it works as expected.

Smile
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Re: Is there specification for RJ45 pins crimp wire depth?

Post by Smile » Mon Apr 27, 2015 7:06 am

Got the crimp tool from knipex model 97 51 10
http://www.knipex.com/index.php?id=1216 ... oupID=1301

Very happy with the tool. Works as expected.
I ordered spare blades (97 59 06) now, should have done this with the crimp tool.

The crimp depth is 5.9mm so that's nice tool up to specification etc.
I hope this information helps everyone else in need of quality tools and information how to check your tool.

xan_user
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Re: Is there specification for RJ45 pins crimp wire depth?

Post by xan_user » Mon Apr 27, 2015 2:37 pm

what made you get concerned with the specs? were you having issues with speed or packet loss, or was it something else?

I must crimp over 1000 cat cables per year, on many different types/qualities of cat cable, and never worried about it.

Olaf van der Spek
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Re: Is there specification for RJ45 pins crimp wire depth?

Post by Olaf van der Spek » Fri Nov 27, 2015 1:15 pm

How do you guys order the wires in the right way? Always takes me so much time.

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