Cable bushings, grommets, for small data cables

Are you trying to protect the cable, dress it up, and/or provide strain relief? (in the latter case, how *much* strain?)

Well, who picked the case??? :>

The taper allows the case to be ejected from the mold.

Only strain relief would be needed. Not much, jusdt so it won't slip out of the box. They won't do tractor-pulling contests with it :-)

It a wimpy cable, containing six 24AWG stranded wires.

Oh ... ahm, well, that would be me. But theye ain't that much out there and then others I saw were tapered as well.

Understandable, but the enclosures we had injection-molded ourselves were never tapered and none of the proto boxes I have here are. It makes fastening single-hole stuff a pain. The selection isn't as rich anymore as it was in the 80's.

Oh well, we'll just grind those areas flat. Not exactly fun with ABS but must be done.

Have you looked at Heyco?

Cheers

Yes, unfortunately they only have bulky monsters. 1" length or more. I think we'll go with Richco.

Joerg Inscribed thus:

If you only want three or four, have a look inside a scrap CD drive !

We'd need thousands. Just had a chat with them and they are sending samples. Here's why, and that blew me away: The required size for a

Yes, that and a tie wrap to the board could work. We are already using the 778 (finned type) somewhere else. Good idea, John. I'll try to provide both options, a board cut-out large enough to allow an LKG Industries grommet and then four holes farther on for two tie wraps. They may not like the tie wraps because of the prep-work. They'd have to loop these through before the board gets mounted. Which would require a staging area in production.

Those kinds of links unfortunately do not work with my Thunderbird.

If you mean just a tie-wrap around the cable and not tied to anything else that won't work. It's stranded wires in there and that would push inside too easily. It'll wear out.

Joerg Inscribed thus:

Sounds like the ideal grommet would be one that has a support tail on one side and a tyewrap groove on the other side. Similar to those used on re-wirable IEC connectors. In fact I have a box of 5000 of them but they are 7.5mm bore. They were originally used for cable strain relief on UK 13A plugs. I'll see if I can photograph one and post a picture.

Yup! But sans the tail, because that'll really get in the way.

I've just submitted the design. Put two holes in the board so if need be we can secure the cables on the board and run through a rubber grommet, in case the squeeze-grommet doesn't pan out. Believe it or not, the drawing misses some crucial info such as cable diameter ranges and the mfg didn't know, and said we should try with samples. Almost fell off the chair here.

Joerg Inscribed thus:

Unbelievable ! I wonder what manufacturing did when they made the tooling...

Maybe massaged it until it fit :-)

Joerg Inscribed thus:

Very big grin... (*)

Are these any help. Sorry forgot to past link:

Those are the usual rubber grommets. I'll leave that decision to my client. The board will have a cut-out for a hard-plastic squeeze type "real" strain relief grommet and also holes to tie-wrap the cable to the board and then use a rubber grommet. Of course, being old-school I would never use plastic tie-wraps but always lacing cord.