Info about hydraulic fittings

[terraformer]

I am looking for info on hydraulic connectors for Mahindra ML112 hydraulic system and am cross posting it here.
Looking to ID the proper termination

Here is a picture.

https://www.tractorbynet.com/forums...ting/423774-mahindra-ml112-hose-question.html

thanks

 

[mcfarmall]

The one on the left is a Straight Thread O-Ring Boss type of fitting, the other appears to be a swivel flare. Take the assembly to your local Parker Fluid Power branch and they can identify it for you and get you fixed right up.

 

[LouNY]

If you follow this link and download the 24 page thread and fitting guide it should help you;
Thread Identification Tools: DiscountHydraulicHose.com
either at the top of the page where it says thread ID or down a bit where it has download for free.

 

[terraformer]

Hi if I was not social distancing I would have taken the part in for sizing and had the part in a jiffy

Read the ID book and noticed that my my thread was either 14x1.5 or 9/16x18. Ever try to measure the difference in them with a calipers. They are essentially the same but not as you know.

 

[oldnslo]

Yes metric vs SAE is confusing especially on fittings with very similar profile.

Usually threads per inch is the best indicator but not fool proof. some companies have a thread gauge to assist in thread identification

 

[LouNY]

Not having your hose in my hand I would say that mcfarmall has the correct answer on the o-ring fitting,
not seeing the inside of the female swivel my first inclination would be JIC.

 

[BukitCase]

Yeah they are close, but (for external threads, at least it can be done with a digital caliper (and usually a calculator) - the way I do it is to use the inside (pointy) ends of the caliper - get in front of a light colored background, use as many threads as are available, measure either from peak to peak or trough to trough of the threads, divide that length by the # of threads you measured; it's easier if your caliper allows switching between inch, fraction and mm.

Example - if you're lucky enough to have a full ten threads showing, you can just measure that and divide by 10. If they're metric, you should be done. If inch, obviously you would (in your example) have exactly 9 threads in .500".

I have a slight advantage in this method, I'm so nearsighted I actually have BETTER than 20/20, up to about 9 inches

With your female end, it'll probably easier to look at the male it came off of (if it's even accessible)

Your avatar - I haven't seen the "Lightning-Fast Chicken F'r patch in about 50 years :laughing: (Ft. Devens, 1966-68) ... Steve

 

[terraformer]

Actually there are only about 4 threads that I can reach with the calipers. I got 1.46mm So is it 1.50 or 1.41 mm? In a world called perfect the thread would have a sharp edge. but it doesn't. I will check the end that is sticking out of the hard line.

It is one of these I feel.


Steve, I am working at about 5" and spent my entire career measuring optics. Worked in a metric based system but my use both systems. Quite a switch from being a 33d back in Devens in 70-71 and korea after.
Dave

 

[LouNY]

What I do quite often with the straight thread fittings is go stand at my bolt bin and check them with bolts and nuts both SAE and metric

 

[ruffdog]

The left one looks like a MB fitting.....look for numbers on it.

MB = Male Boss; threaded fitting with an O-ring seal. MB is also
called SAE Strait Thread or “-AN”.

The other looks like a JIC