Wilson 4JR Rockwell Tester
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- เผยแพร่เมื่อ 6 ก.พ. 2025
- The Wilson 4JR Rockwell Tester and a Brief History.
NIST Rockwell Hardness Measurement of Metallic Materials: nvlpubs.nist.g...
Wilson Rockwell Tester Manual: amet-me.mnsu.ed...
Buehler Company: www.buehler.com/
I purchased an old Clark that looks similar to yours. I cleaned it up a little but I’m have a lot of problems getting even close to an accurate reading. I may need to get a new indenter. Also it does not lower onto the block slowly. The cylinder has oil and the adjuster for the rate of decent is fully closed. More repairs I guess. I may have to get a different one.
Bom dia a empresa tem um durômetro deste modelo temos um padrão de 30 HRC não está zerando a manivela lateral está lenta pode ser sujeira desde já obrigado adorei este vídeo ele e muito importante obrigado
Wilson Rockwell machine + heat treat oven = AWESOMENESS!!!
Get ready!!!! Hahaha. Been saving and waiting for this for a while now. 👊🏻🍻
Is there any way you could weigh the hanger and weights for the c scale I got one of these but I had to make the weights and I'm getting low readings ........it makes me think I did it wrong
All of the weights have the weight labeled on them. 60kg, 50kg, 40kg. So if you total that you should be fine. For low readings check your penetrator. Might be cracked. If not then the error you see could be from dirt. Clean everything carefully and check. If you are still low then you may require calibration.
@@alexsteingraber so that's the major load that's not what they actually weigh that's just the force that gets applied........they actually weigh significantly less because 150 kg is 330.693 lbs
Quote from Practical Machinist... “ have a 4jr. The 50 Kg weight is 2.375" tall, 3" diameter and has a .250 flat on one side. It weighs 2000g. It has a 2.0KG sticker on the bottom. My 40 weighs 1615g, and has a 1.6KG sticker on the bottom. my 60 weighs 1855g. Looks like your 5/4 ratio will work fine.”
@@alexsteingraber ya I read that if you read the next one down he has a 4jr also and they weigh different
@@alexsteingraber it's cool thanks man
Thanks for the info and video!
Thank you for watching dude! 👊🏻🍻 No problem!
Nice video. Did you get it calibrated yet and if so did they do anything different than what you did?
Jason Long Thanks man! Not yet. I’ll probably get it done here in the next year but she’s going strong and giving me solid readings. I’ll do an update for sure once it’s calibrated.
I’m not sure exactly how the Wilson is calibrated. But with most machines, you can calibrate it yourself. It’s slightly tedious, but easy, if you’re careful. There’s no need to pay a company to do this unless your work requires traceable accuracy. I’ve done it numerous times over the years.
By the way, you’re not supposed to use the bottom of the test sample. It’s only calibrated on the top surface, and there’s no way to know what the bottom is hardened to. Additionally, the raised metal around the indentations when on the bottom, will give an incorrect reading as the sample will “give” when the test is being done, so throw that double side used sample away, as it’s useless.
Do you have info about maintenance? Do you have to lube it?
I have an owners manual. You oil it but not often. Everything is enclosed. So you maintain as needed.
I have a manual that I found that I think will help. But I have an issue where all the parts move fine. But when I place a piece of aluminum in to test, the moment I attempt to turn the screw, it acts like it's stuck. Have you had an issue like that or know what it could be?
@@feslerae Huh. That’s odd. Never had that issue. I’d reach out to www.buehler.com give them a call. They own the Wilson brand and are super helpful with technical questions like that.
I was contemplating on getting a wilson rockwell tester off ebay a few weeks ago but i just didn't have any place to set it up. Is that the one from north carolina?
Dope! You should get one. Put it in your house! Nope! I saw that one though. This one is from Jersey. There’s a bunch of them on eBay that are in great shape! 👌🏻🤙🏻
hey thanks a lot for this video! can you give an estimate on how much should one be paying for these? For a 3JR, 4JR, 5JR ? Is there something in particular one should be looking at when buying one?
On eBay they range from $700 to $1,700 you can normally spot some decent ones. Also, deff got up the sellers for more info or pictures. Ideally you want to find one with all the weights and the indenter as those are hard to find and expensive pieces. Every thing else is fairly obtainable and affordable.
@@alexsteingraber I found one and might buy it for quite less than that, ~ $375! I am pretty far from the US and it's the first time I see anything like this on the market. Obviously getting replacement parts here would be extremely hard (expensive). The guy says it comes with 3 indenters, and in the picture I can see 2 anvils (plane & cylindron). It doesn't have the aluminum "squirt" around the screw, which worries me. Is that an accessory or did they all come with that?
That’s a good deal actually. That aluminum cover isn’t really needed. Just protects the threads on the capstan from dirt. If you keep it clean you should be ok.
@@alexsteingraber Thanks for your replies! If I end up buying it I might come back with more questions hehe
@@alexsteingraber hi! dammnnn the glass on the gauge is broken, it has a big crack from side to side, but the tester does come with many accesories... do you think it is a deal breaker? can those be replaced?
First 😎
Dude! Crushed it! 👊🏻🍻 What did you learn?
@@alexsteingraber dirty rockwell thingy bad
🤣🤣🤣🤣👊🏻🍻