Metric hydraulic fitting v regular bsp

[aidan]

I have a hydraulic ram which has a metric end on it to attach the hydraulic hose. I need to modify the hose pipework.

Metric fittings are same as those fitted on power washers, they have rubber seals in them. See pic

Should I remove that metric end and replace with bsp or is there a reason you would use metric fittings in hydraulics.

It is a 6mm metric hydraulic hose feeding that ram. Can bsp fitting be put on 6mm hydraulic hose.

Any reason why you would use metric hydraulic fittings over bsp.

 

[Neil MP]

I have a hydraulic ram which has a metric end on it to attach the hydraulic hose. I need to modify the hose pipework.

Metric fittings are same as those fitted on power washers, they have rubber seals in them. See pic

Should I remove that metric end and replace with bsp or is there a reason you would use metric fittings in hydraulics.

It is a 6mm metric hydraulic hose feeding that ram. Can bsp fitting be put on 6mm hydraulic hose.

Any reason why you would use metric hydraulic fittings over bsp.

No reason to change it, metric ends are becoming as common now as BSP or JIC

 

[ACEngineering]

I have a hydraulic ram which has a metric end on it to attach the hydraulic hose. I need to modify the hose pipework.

Metric fittings are same as those fitted on power washers, they have rubber seals in them. See pic

Should I remove that metric end and replace with bsp or is there a reason you would use metric fittings in hydraulics.

It is a 6mm metric hydraulic hose feeding that ram. Can bsp fitting be put on 6mm hydraulic hose.

Any reason why you would use metric hydraulic fittings over bsp.

its not the same fitting as pressure washer, same thread M22 yes but the sealing cone is different.

generally in metric you have light and heavy series and some machines use a mix of both, the diffence between them is the cone angle so they dont interchange.

The is also a super light or extra light series i think on realy small stuff like auto grease pipes etc.

 

[PI Stsker]

You’ll find most tractor dealers where you might end up to get a hose repaired don’t stock metric fittings. Turns in to a real bodge on a Saturday morning trying to fix something when they haven’t got anything on the shelf. Anything metric now we cut off and swager new BSP ends on to make it easier down the line.

 

[Nearly]

@Mr Happy

 

[Pan mixer]

I have been told that they (the hydraulic pipe people) aren't allowed to repair a hydraulic hose at all - even change the end on a brand new one.

They can do it for a high pressure water line however........

 

[010101]

I have been told that they (the hydraulic pipe people) aren't allowed to repair a hydraulic hose at all - even change the end on a brand new one.

They can do it for a high pressure water line however........

Had a chat with an experienced hydraulic retailer about this.
If you asked for a fitting to be put on the end of a blank pipe, you would probably be OK.
The insurance liability of repairs is different from direct instructions to install a fitting.

 

[PI Stsker]

Had a chat with an experienced hydraulic retailer about this.
If you asked for a fitting to be put on the end of a blank pipe, you would probably be OK.
The insurance liability of repairs is different from direct instructions to install a fitting.

Pirtek have always been abit funny about repairing pipes with joiners etc tractor dealerships etc not so much.

 

[Wesley]

You’ll find most tractor dealers where you might end up to get a hose repaired don’t stock metric fittings. Turns in to a real bodge on a Saturday morning trying to fix something when they haven’t got anything on the shelf. Anything metric now we cut off and swager new BSP ends on to make it easier down the line.

Thats when using a smaller one man band type who very often has an Aladdin's cave of nearly every fitting known to man becomes worth their weight in gold.

 

[Hay Maker]

Pirtek have always been abit funny about repairing pipes with joiners etc tractor dealerships etc not so much.

This is all about making as much money as possible as the repairers will allway's quote insurance or hydralic trade association rules as a reason for not repairing but only replace with a complete new hose assembly. The hose in question will more than likely be 1/4 inch bore but you should be able to obtain a metric insert. The metric hydraulic fittings system is an nightmare to work with as there are too many different fittings sizes for each hose size which is why BSP is still widely used for hose replacements.

 

[Welderloon]

I blame the Europeans with their fancy-pants metric system

 

[aidan]

its not the same fitting as pressure washer, same thread M22 yes but the sealing cone is different.

generally in metric you have light and heavy series and some machines use a mix of both, the diffence between them is the cone angle so they dont interchange.

The is also a super light or extra light series i think on realy small stuff like auto grease pipes etc.

Mine only 6mm hose per the marking on the hose rather than 1/4, rated to 400 bar, think it's a 17 or 19mm spanner I used to remove hose.

Open close on Rauch fertilizer spreader which I need to convert from four hose to two hoses and incorporate a 3 way valve so I can shut off 1 disc when going around the headland.

Wondering should I fit adaptor from metric to bsp on the ram ends and then no issues with fittings

 

[Pistonbroke]

You’ll find most tractor dealers where you might end up to get a hose repaired don’t stock metric fittings. Turns in to a real bodge on a Saturday morning trying to fix something when they haven’t got anything on the shelf. Anything metric now we cut off and swager new BSP ends on to make it easier down the line.

I went to get a hose done for the manitou last week and they didn't have a fitting. Looked on the computer and the last one he sold was four years ago....to me. Not worth them keeping stock really. Got it for next morning.

 

[PI Stsker]

I went to get a hose done for the manitou last week and they didn't have a fitting. Looked on the computer and the last one he sold was four years ago....to me. Not worth them keeping stock really. Got it for next morning.

Similar story here; with my HGV tankers. There metric thread, and when a driver drags the fitting down the road and wears it flat trying to find a 1” 21mm metric tread male fitting is nearly impossible.
this has happened more than once; so now they have all been cut off and converted to BSP so any local supplier will likely have something.

 

[thesilentone]

The issue used to be using fittings to repair a burst pipe (cut out the bust part and re-join with fittings). The advice at the time was this repair must be secured to the machine with a bracket. That morphed into "you can't repair hydraulic pipes" which is bxxxcks !

 

[Gerbert]

Other way around overhere, I only have two machines with bsp fittings, and one of those I converted to metric. Still a stupid idea to make them metric as every hydraulic component has bsp fittings but hey, 75 percent of my machines are 12L and 15L fittings so that's what I have on hand.
Metric fittings have a little tighter threadpitch which results in less loose fittings I think. Might be a total coincedence but the one machine I have left with bsp fittings had a habit of connections loosening.

 

[aidan]

Other way around overhere, I only have two machines with bsp fittings, and one of those I converted to metric. Still a stupid idea to make them metric as every hydraulic component has bsp fittings but hey, 75 percent of my machines are 12L and 15L fittings so that's what I have on hand.
Metric fittings have a little tighter threadpitch which results in less loose fittings I think. Might be a total coincedence but the one machine I have left with bsp fittings had a habit of connections loosening.

Interesting Rauch is German, is it metric is usually supplied on new machinery on the continent

 

[Tractor Tim]

Any thing metric here gets a BSP adaptor and subsequently pipes to match makes it much easier. Usually find that if a ram or valve has a metric male x male adapter screwed in then the end in valve/ram is bap anyway

 

[pail of ale]

I find BSP is much tidier to use if you are adapting or fabricating with t's, crosses, banjos, long and short elbows, with all sorts of male and female versions and all around half the price here compared to metric.

 

[David Bliss]

Things do occasionally fail standing in the shed, but I used to get people bring hydraulic pipe failures and with the mixture of Pipe, JIC, and now metric, I used to keep all old fittings and a quick fix just to get people on the go again would weld my old to the new failed bit so I could get them on the go again. I would say get a new bit made up when you can, years later the quick fix was still there, last one I done was for the scrapped Chines tractor I rebuilt for myself, quick-fit coupling locked off and split the pump, well that won't happen again as removed it, but then they used some odd sized fittings, I started to hunt for fittings but couldn't find the very odd sized one as they used flat face fitting, I had the two pieces of pipe with fittings one on each fitted the one end of the tractor pump and the diverter valve, so simple cut end off the quick-fit and weld to the odd ball fitting on the pump that then the rubber flex pipe fitted the quick-fit threaded bit. Photos of before and after, I found the hydraulic oil foamed as the pump was sucking air in the weak two set screw fitting, this was altered to take an extra set screw and pipe lifted out of harms way and made to not be under strain, and gone is the quick-fit. It is a handy little tractor now but build quality was diabolical with bit just forced to fit.