Multi-conductor control cable: PVC vs.

D

DaveC

Guest
I need to replace a cable (16-conductor, 28-ish awg, stranded, shielded) on
an industrial machine. It’s used to connet a hand controller (small box
with rotary encoder and pushbuttons) to the main control panel.

The original is a coiled (a la telephone handset) but the replacement
doesn’t need to be. During use the cable will be splashed with lubricating
oil (think dino motor oil) so in the short-term (5 years) it needs to be
resistant to this.

I found this:

http://www.mogamicable.com/category/bulk/multi_core/28awg/

which is cable for the music-concert industry (audio mixers and such).

I can’t find any rubber-insulated cables (a la SJ or SO cables). How
resistant will PVC-jacket be to oil?

Thanks.
 
On 10/11/2015 19:25, DaveC wrote:
I need to replace a cable (16-conductor, 28-ish awg, stranded, shielded) on
an industrial machine. It’s used to connet a hand controller (small box
with rotary encoder and pushbuttons) to the main control panel.

The original is a coiled (a la telephone handset) but the replacement
doesn’t need to be. During use the cable will be splashed with lubricating
oil (think dino motor oil) so in the short-term (5 years) it needs to be
resistant to this.

I found this:

http://www.mogamicable.com/category/bulk/multi_core/28awg/

which is cable for the music-concert industry (audio mixers and such).

I can’t find any rubber-insulated cables (a la SJ or SO cables). How
resistant will PVC-jacket be to oil?

Thanks.
Click to expand...

Find some silicone rubber sleeving of the right sort of internal diameter.
With a goodly amount of talcum powder , it should be possible to cover
some standard cable, using a "peristaltic" or snake-motion sort of
action, pushing and pulling, to feed it over the core cabling.
 
Find some silicone rubber sleeving of the right sort of internal diameter.
With a goodly amount of talcum powder , it should be possible to cover
some standard cable, using a "peristaltic" or snake-motion sort of
action, pushing and pulling, to feed it over the core cabling.
Click to expand...

Are you saying that the PVC won’t hold up to dino oils?
 
"DaveC" <not@home.cow> wrote in message
news:0001HW.1BF27C0D00098211124B393CF@news.eternal-september.org...
I need to replace a cable (16-conductor, 28-ish awg, stranded, shielded) on
an industrial machine. It’s used to connet a hand controller (small box
with rotary encoder and pushbuttons) to the main control panel.

The original is a coiled (a la telephone handset) but the replacement
doesn’t need to be. During use the cable will be splashed with lubricating
oil (think dino motor oil) so in the short-term (5 years) it needs to be
resistant to this.

I found this:

http://www.mogamicable.com/category/bulk/multi_core/28awg/

which is cable for the music-concert industry (audio mixers and such).

I can’t find any rubber-insulated cables (a la SJ or SO cables). How
resistant will PVC-jacket be to oil?

Thanks.
Click to expand...

PVC jacketed cables are oil resistant.
 
> You need to find a manufacturer's data sheet to be sure.

http://www.mogamicable.com/category/bulk/multi_core/28awg/
 
On Tue, 10 Nov 2015 14:14:18 -0800, DaveC wrote:

You need to find a manufacturer's data sheet to be sure.

http://www.mogamicable.com/category/bulk/multi_core/28awg/
Click to expand...

No useful info on oil resistance there.

The oil resistance of PVC is widely variable, depending on the
plasticisers used and possibly other factors, but is generally quite
poor. I have never seen any cable rated as oil resistant with a PVC
jacket. I have seen PVC swell, lose strength and disintegrate from
exposure to oil. A search on the term 'oil resistant cable' should turn
up something more likely to hold up well under oil exposure, at a higher
cost.
 
In article <5642a65e$0$51816$b1db1813$19ace300@news.astraweb.com>,
nospam@null.void says...
On Tue, 10 Nov 2015 14:14:18 -0800, DaveC wrote:

You need to find a manufacturer's data sheet to be sure.

http://www.mogamicable.com/category/bulk/multi_core/28awg/

No useful info on oil resistance there.

The oil resistance of PVC is widely variable, depending on the
plasticisers used and possibly other factors, but is generally quite
poor. I have never seen any cable rated as oil resistant with a PVC
jacket. I have seen PVC swell, lose strength and disintegrate from
exposure to oil. A search on the term 'oil resistant cable' should turn
up something more likely to hold up well under oil exposure, at a higher
cost.
Click to expand...

silicone

Jamie
 
On 11/10/2015 2:44 PM, DaveC wrote:
Find some silicone rubber sleeving of the right sort of internal diameter.
With a goodly amount of talcum powder , it should be possible to cover
some standard cable, using a "peristaltic" or snake-motion sort of
action, pushing and pulling, to feed it over the core cabling.

Are you saying that the PVC won’t hold up to dino oils?
Click to expand...

I don't know what "dino" oils are, but PVC seems to be resistant to many
things.

http://www.plasticsintl.com/plastics_chemical_resistence_chart.html

Looks like there is more than one type of PVC. Why this particular
cable company? I wouldn't think the music industry has much in common
with machine tools. Why not use a cable from one of the cable companies
where they specify it for industrial use around oils?

http://www.igus.com/wpck/15050/overview_motorcables?C=US&L=en

http://www.lappusa.com/10150description.htm

If this cable will be continually bent and moved, don't you need a
special type of cable for that? I would contact one of the cable
manufacturers and find out what they recommend.

--

Rick
 
On Wed, 11 Nov 2015 18:49:21 -0500, rickman <gnuarm@gmail.com> Gave us:

I don't know what "dino" oils are, but PVC seems to be resistant to many
things.
Click to expand...

Yeah, right. That's why NASA uses it exactly NOWHERE.

The same is true of the makers of nuclear power facilities.

Sometimes you show a true lack of knowledge and experience.

You remind me of Donald Trump.
 
Are you saying that the PVC won’t hold up to dino oils?

I don't know what "dino" oils are,
Click to expand...

from crude oil source, as opposed to synthetics
but PVC seems to be resistant to many
things.

http://www.plasticsintl.com/plastics_chemical_resistence_chart.html

Looks like there is more than one type of PVC. Why this particular
cable company? I wouldn't think the music industry has much in common
with machine tools.
Click to expand...

The cable is available by-the-foot (I need 12 ft total). The local
distributor emailed the Japanese manufacturer who confirmed that they tested
this PVC cable with gasoline which flushed out the particular plasticizers
and hardened the remaining PVC. So no-go.
Why not use a cable from one of the cable companies
where they specify it for industrial use around oils?

http://www.igus.com/wpck/15050/overview_motorcables?C=US&L=en

http://www.lappusa.com/10150description.htm
Click to expand...

Specs look good, but minimum order is roll of 100 ft. I might be able to sell
remainder on e-Flea but then again, maybe not. Might get mfgr. to sample.
We’ll see…

igus.com have a really nice parameter search page:

http://www.igus.com/wpck/7101/CF_Productfinder_US

This one looks good:

http://www.igus.com/iPro/iPro_01_0013_0008_USen.htm?ArtNr=CF10.01.18&c=US&l=en


If this cable will be continually bent and moved, don't you need a
special type of cable for that? I would contact one of the cable
manufacturers and find out what they recommend.
Click to expand...

It will be used occasionally--it’s a convenience (occasional-use) hand
control box.

Have requested samples from those that look good.

Thanks.
 
On 11/15/2015 2:47 PM, DaveC wrote:
silicone
Jamie

Suppliers of such cables?
Click to expand...

I'm not trying to give you a hard time, but this is a question that a
simple google search should give good results for. Have you tried
googling for silicone and the other parameters you require?

--

Rick
 
In article <0001HW.1BF918E600085C8611EE013CF@news.eternal-
september.org>, not@home.cow says...
silicone
Jamie

Suppliers of such cables?
Click to expand...

Really?

http://www.awcwire.com/productspec.aspx?id=ce-silicone-insulated-hook-
up-wire

So some leg work..

If you want a large quanity I can hook you up but be
prepaired to pay the piper.

jamie
 
In article <0001HW.1BF918E600085C8611EE013CF@news.eternal-
september.org>, not@home.cow says...
silicone
Jamie

Suppliers of such cables?
Click to expand...

Oh that's right, you did say cable

http://www.awcwire.com/productspec.aspx?id=ul-4535-silicone-cable

jamie
 
On Tue, 10 Nov 2015 11:25:01 -0800, DaveC <not@home.cow> wrote:

I need to replace a cable (16-conductor, 28-ish awg, stranded, shielded) on
an industrial machine. It’s used to connet a hand controller (small box
with rotary encoder and pushbuttons) to the main control panel.

The original is a coiled (a la telephone handset) but the replacement
doesn’t need to be. During use the cable will be splashed with lubricating
oil (think dino motor oil) so in the short-term (5 years) it needs to be
resistant to this.

I found this:

http://www.mogamicable.com/category/bulk/multi_core/28awg/

which is cable for the music-concert industry (audio mixers and such).

I can’t find any rubber-insulated cables (a la SJ or SO cables). How
resistant will PVC-jacket be to oil?

Thanks.
Click to expand...

Try Alpha Wire 'Xtra-Guard' 'High-Flex'. They will pre-cut.
UL AWM Styles 2587, 2661, 20234. All oil-resistant PVC.

RL
 
I have forty years experience in designing and building machine tool,
robotic and automations systems. Whenever I require a cable that might be
exposed to oil or coolant contamination, or will encounter high rates of
flexing I only specify Olflex. It's more expensive than most, but a lot
less expensive than failure and replacement.
 
On 11/15/2015 2:47 PM, DaveC wrote:
silicone
Jamie

Suppliers of such cables?

I'm not trying to give you a hard time, but this is a question that a
simple google search should give good results for. Have you tried
googling for silicone and the other parameters you require?
Click to expand...

16-conductor stranded, 24 awg or smaller, color-coded or numbered, single
shield (foil or braid), oil-resistant jacket. Please try yourself. I’ve had
no luck. I’m not saying one doesn’t exit, but it’s not easy to find.

OK, people–ready, set, GO!

Thanks.
 
I have forty years experience in designing and building machine tool,
robotic and automations systems. Whenever I require a cable that might be
exposed to oil or coolant contamination, or will encounter high rates of
flexing I only specify Olflex. It's more expensive than most, but a lot
less expensive than failure and replacement.
Click to expand...

I appreciate that this is, enviably, wonderful cable. But it comes in minimum
size of 20 awg. If only it met all my requirements.

My need is for a hand-controller (think Atari joystick)–carrying milliamps.
20 awg is overkill at the expense of weight, diameter, and (arguably) greater
flexibility.

Thanks.
 
16-conductor stranded, 24 awg or smaller, color-coded or numbered, single
shield (foil or braid), oil-resistant jacket. Please try yourself. I’ve had
no luck. I’m not saying one doesn’t exit, but it’s not easy to find.
Click to expand...

And cut to order (no 100 ft rolls, please–I need only 12 feet).

Thanks.
 
On 11/17/2015 11:33 PM, DaveC wrote:
16-conductor stranded, 24 awg or smaller, color-coded or numbered, single
shield (foil or braid), oil-resistant jacket. Please try yourself. I’ve had
no luck. I’m not saying one doesn’t exit, but it’s not easy to find.

And cut to order (no 100 ft rolls, please–I need only 12 feet).

Thanks.
Click to expand...

Your best and cheapest solution may be to use a VTN-200 heat shrink to
cover your standard PVC sheathed multicore. VTN-200 shrink is chemical
and oil resistant and easily available. eg. Ebay # 251726064642 Might be
an idea NOT to shrink it as it is more flexible unshrunk.
 
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