Help Indentifying Crimp Connector - Page 1
Forum section: electronics / beginners

author: Unknown
author_rank: Unknown
timestamp: February 05, 2021, 08:11:30 pm
content: I am posting again with a request for help from the more experienced. I need to replace a broken crimp connector on a cable but I have no idea what to look for. Below I am attaching some pictures. For some background the connector is used in a dental handpiece motor connection. I presume it's a three phase brushless dc motor.Connector Lenght = 14,5 mmPin Lenght = 8 mmPin Width = 1,5 mmConnector Width = 2,2 mm

author: Dmeads
author_rank: Regular Contributor
timestamp: February 06, 2021, 07:42:26 am
content: okay I found thesehttps://www.ebay.com/itm/Insulated-Copper-Cord-Pin-End-Wire-Connector-Crimp-Terminals-5-7-10-12-14-20-AWG/233172666518definatly not the same but some of the specs I read said the black size is close to your crimp.Alternativley, you could measure the diameter of the male pin in the picture of the socket, and get a copper tube that same diameter (you could probably make one out of copper stock and a properly size micro-drill bit). You crimp one end to your cable, the the tube should act as a female pin that the male pin in the socket could fit into. if the fit is too tight, you could drill it out slightly. probably would be the fastest solution but defiantly not the cheapest

author: elekorsi
author_rank: Regular Contributor
timestamp: February 06, 2021, 08:04:55 am
content: @Dmeads: link you posted is for wire ferrules... is it a misstake or a joke?@leonlazic: is there any chance that you could find the spare parts list for the machine? It saved me a lot of times...

author: NSA
author_rank: Contributor
timestamp: February 06, 2021, 05:48:25 pm
content: https://elexadent.com/product/contact-socket-10/See link above or I am sure this would be a molex female crimp normally available in latching and non latching versions.Measure pin diameter and search google for Molex crimps, thousands of pictures to compare.

author: tooki
author_rank: Super Contributor
timestamp: February 10, 2021, 10:09:14 pm
content: Quote from: leonlazic on February 06, 2021, 09:25:29 pmI don't think that's the connector you have. Yours doesn't appear to have a fourth PE contact (all of the ones in the PDF linked above do), nor does the internal construction appear to be even distantly related.But on the chance I'm wrong (or that you just have an earlier version), well… every crimp terminal needs a special tool, ideally. These have the offset insulation crimps that require a circular (not m-shaped) insulation crimp to not be mangled. That's a lot harder to find in cheap crimp tools, unfortunately.

author: vk6zgo
author_rank: Super Contributor
timestamp: February 10, 2021, 11:06:11 pm
content: It looks like the kind of female part which clips into molex or similar sockets.They are "common as dirt", & for some reason, vary a bit in construction, but not enough to be non compatible.Yes, it would be very nice to have the right crimper, but they, for some reason, are not common.You can solder them, but you need to be very careful & painstaking in doing so, unlike the PRC manufacturers of some custom made equipment at my last job before retirement.It looked like they had outsourced them to the "bloke wot duz it in his potting shed!"

author: tooki
author_rank: Super Contributor
timestamp: February 13, 2021, 03:09:33 pm
content: Quote from: leonlazic on February 11, 2021, 11:08:09 pmPE = protective earth (ground). The C091 M16 connector comes in 3+PE (i.e. 4 contacts) and 6+PE (i.e. 7 contacts). Your connector has three contacts, so it cannot be from a product line that only comes in 4 or 7. And again, the internal construction is entirely different.Maybe take more pictures of your connector from various angles, and include measurements of the connector itself, not just of the contacts.Quote from: leonlazic on February 11, 2021, 11:08:09 pmProper crimp tools are expensive.A lot of dies are compatible, but I have encountered (at least among cheap ones) slight differences in dimensions, enough to make it not work.However, bear in mind that connector manufacturers only use a handful of suppliers for their hand tools. So you see the same few handle designs, just in different colors. Pressmaster and WEZAG are probably the biggest. So if, say, you get Amphenol and Molex connectors whose official tools both use Pressmaster handles, the dies are almost guaranteed to be compatible. If the official tool is made in Sweden, it’s Pressmaster. If it’s made in Germany, almost certainly WEZAG.

author: tooki
author_rank: Super Contributor
timestamp: February 15, 2021, 02:57:17 pm
content: Yes, you need to identify the connector. THEN you can buy the corresponding contacts.Identifying contacts alone is extremely difficult, since countless contacts look extremely similar. Similar designs often exist in different sizes, which (absent a measurement like you did) can be hard to tell in photos, since the scale varies.FWIW, I sometimes wonder if connector companies make gazillions of contact versions just to make you replace existing stock and tooling. I feel that a ton of contacts could hypothetically be standardized across a few connector types. (At least JST does this a bit.)