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Benders and Bending Which bender is best? How do you use a bender? How do you calculate bends? Everything Bender related...


Benders and Bending Which bender is best? How do you use a bender? How do you calculate bends? Everything Bender related...

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  #1  
Old 09-24-2016, 03:51 AM
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ITS ALIVE! Electric hydraulic protools 105

After almost 14 weeks of waiting for my dies ( had to wait for a sea container USA TO AUSTRALIA thought it woulda saved me some $$ in freight probably cost the same and I had to wait 14 weeks instead of 2 if I just got them sent direct.

Few weeks of building the stand and getting everything set up hours and hours in the shed.
And after a few problems with the incorrect hydraulic hoses I got that sorted today I got to finally fire my electric hydraulic bender up for the first time had some problems with the big 5Hp motor tripping the circuit breaking in the shed until it primed all the lines and bled the air out didn't seem to be any problems now it runs smooth and quiet.

Unfortunately I couldn't try it out as the rubber seal on the top of my return filter was missing I didn't know until I unscrewed it this arvo to fill it with oil to prime it so I could try it as it was dripping abit of oil while priming the oil out and doing a few dry runs.

But who can't not try an awesome new machine after you just finished building it so thought ahhh stuff it I'm giving it a go what's a few drops of oil!!!!

So grabbed some scrap tube cleaned all the rust and shit off loaded her in and pulled the lever bent with ease!!
1 1/2"X 120wall barely even read anything on the gauge! Instant smile! Never built anything like this before! Never played with hydraulics ( except operating them in truck all day at work) no experience with electric motors or wiring them bla bla bla.
Anyways pulled the tube out to expect my first bend ay yea looks sweet..... On the inside. The top of the outside of the bend different story didn't look good it's flatten out abit and dosnt look round like it should!!

What's gone wrong? Where should I start looking?
When I ordered/purchased the dies I even sent some sample pieces of my steel that I will be using from Aus to USA to ensure I had the exact correct dies for my material. I lubed the backing block and the bolt was secured at the front of the die
I will upload some pics and post link to video I tried to get some photos of the tube but in the pics it's very hard to see it out of shape.
Feed back please!!!
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  #2  
Old 09-24-2016, 05:47 AM
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http://s1376.photobucket.com/user/Da...sbj.jpeg.html][/url][/IMG]f
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  #3  
Old 09-24-2016, 05:51 AM
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Last edited by ducas99; 09-24-2016 at 05:57 AM.
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Old 09-24-2016, 06:00 AM
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[IMG][/IMG]
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Old 09-24-2016, 06:02 AM
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Top pic is my bender
2nd pic is prolly the best one of the tube I could get its very hard to see in pics but the top is flattened out
3rd pic is the tube sitting in the backing block is it normal for the tube to sit like this or should it be nice and snug in there??
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  #6  
Old 09-24-2016, 06:24 AM
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https://youtu.be/B9FhWNrg88I
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Old 09-24-2016, 06:39 AM
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https://youtu.be/_wg5NFVfX4M
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Old 09-24-2016, 06:41 AM
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https://youtu.be/HRdOzsVIk9E
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  #9  
Old 09-24-2016, 02:36 PM
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Quote:
Originally Posted by ducas99 View Post
[IMG][/IMG]
That is not correct. . .
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  #10  
Old 09-24-2016, 07:07 PM
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Incorrect dies?
🤔 I even sent my material to pro tools to ensure I got the exact correct dies for my steel.
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Old 09-24-2016, 08:21 PM
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From the picture-- the real world may be different!
Notice that the tube and the machined radius of the die do not in any way match the radius of the tube.
The tube and the radius of the die do not match with the die being effectively off center, perhaps even dimensionally wrong...............
If you get twisting and or deformed tube after the bend...
I wont be surprised....

E
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Old 09-24-2016, 08:32 PM
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First thing I looked at was how the tube sat in the dies and instantly thought this dosnt look as snug and dosnt match at all how they describe in there videos and web page etc. had to try it tho. Can someone post a pic do I can see how snug and perfect it should actually sit in both dies.
Where to go from here.... Cost to freight the dies back are nearly the same cost of the die 😔 oooo living in Aus sucks when ya trying to do this stuff.
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  #13  
Old 09-24-2016, 09:55 PM
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Is that 40mm dia tube instead of 1.5"?
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  #14  
Old 09-24-2016, 09:58 PM
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It's 38mm X 3mm or 1.5inch X .120wall I sent samples of my meterial away to ensure I got the exact right dies this piece of tube is off the same length I sent away
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Old 09-25-2016, 01:42 AM
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[IMG][/IMG]


This is the other die I purchased with a piece of scrap in it to suite it looks like it fits much better just re checked and measured my first one it's definitely 38mm / 1 1/2inch and the die has 1 1/2" stamped on it definitely dosnt sit right in it tho.
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Old 09-25-2016, 09:55 AM
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Are there markings on the die to indicate the radius?

Someone shipped the wrong die?

Did you show that pic to the die manufacturer?
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  #17  
Old 09-25-2016, 11:13 AM
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Quote:
Originally Posted by ducas99 View Post
[IMG][/IMG]


This is the other die I purchased with a piece of scrap in it to suite it looks like it fits much better just re checked and measured my first one it's definitely 38mm / 1 1/2inch and the die has 1 1/2" stamped on it definitely dosnt sit right in it tho.
This is how the first die should look!
based on the picture it is not machined correctly.
I would contact PT and show them your picture.

E
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Old 09-25-2016, 04:03 PM
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Yea emailed them sat night my time which is about 12hrs ahead so just awaiting a response see what they come up with
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  #19  
Old 09-25-2016, 08:33 PM
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Just looking at all the dies listed that you can buy I reakon this could be the 34.9mm ( 1 3/8 )die and has been stamped in correctly. I will measure with the vernier across the diameter when I get home after work.
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  #20  
Old 09-25-2016, 11:24 PM
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The die in post 4 is not round.
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