Captain L470

[jw12]

Thanks alot for the information it was real helpful

[straggleweed]

nope never been crashed *Knock on wood*
nope no issues with the control except for sometimes while it is running the display freezes up ( the numbers just sit still and the program doesn't look like its advancing) but even while the display is frozen the machine still moves and does everything it is suppose to do. Ive discovered that one of my issues is that the cap screws that hold the turret mount down to the cross slide keep backing out causing my diameters to be all over the place. its been about a month now since the service guy tightened them down so its about time to do it again. every morning my first part or 2 will be about .005 over sized on the critical bore then it goes back to normal with out changing an offset, after that it stays with in about .002 the rest of the day. (this machine does mainly ID work). all of my old issues still exist too.

my new issue with it is that ive got a SKUNK (shunk) front actuated pnumatic chuck and it was new with the machine just over a year ago and it needs to be rebuilt. there is a valve on the front of the chuck that keeps sticking and i have to clean it out about once a week due to build up that is leaking past some internal seals. (this is that what skunk guy said anyways). when it sticks really bad my parts will start to push back.. this issue has just started recently so it doesnt have anything to do with the diameter size issue since that has been going on since new.

this machine has put a bad taste in my mouth and ill never buy another okuma... ive got a mazak since then that does the same work and it has been flawless

Like i said in my first post mine could just be a lemon i dont know, but others do seem happy with their captains, the one that i have just sucks.
My personal opinion is Mazak all the way.. but im sure there are people out there that have had a mazak lemon who knows... i think its all just luck of the draw almost the same thing as when a person goes to buy a new car.

[jw12]

Thanks for the reply back straggleweed we have had good luck out of our okumas
but the captain might not be as good as the crown we have.

[Goldorak]

Originally Posted by jw12 Thanks for the reply back straggleweed we have had good luck out of our okumas but the captain might not be as good as the crown we have.

you can' compare a crown with a captain , the crown is realy one of the best machine on the market

we got a L1420 and this lathe is unstoppable even with .375DOC in titanium it dosen't slowed down and hold .0002 tolerence without a problem


we also got a Captain L700MW, it's a good machine too but noting to compare with the Crown , even our Cadet LNC8 is more rigid than the captain

but well tuned, the captain is capable to give you a relatively good productivity and can easily hold .0002 to .0005 tolerances

we also got an eurotech elite 4 axis lathe , he is way faster than the captain , about 15% faster for the same part , but holding .001 tolerance it's a PITA

[jw12]

you can' compare a crown with a captain , the crown is realy one of the best machine on the market

yeah our crown is unbelievable it just keeps going and going it will take some abuse.
you say the captain wont take the abuse a crown will or be as sturdy.

[Goldorak]

Originally Posted by jw12 yeah our crown is unbelievable it just keeps going and going it will take some abuse. you say the captain wont take the abuse a crown will or be as sturdy.

Captain is a good machine but very fragile , simply break an insert and you can misalign the holder , the VDI turret is very fast but also very fragile , you can't run it at full speed with some M-tool attachment , the holders are too heavy for the speed of the turret and the encoder tend to loose the angular position

but even at 50% it's freaking fast

i fond a little video that shows how fast the turret spin ant it's not even at 100%

YouTube - Okuma Captain CNC

YouTube - Okuma Captain CNC

on our Crown i have absolutely no fear taking a .375DOC and .02 IPR pass in some pretty hard material like 4340, but close the door before hitting the green button

[jw12]

How do you turn the turret speed down is it in the parameters

[Goldorak]

in parameter page 28 no 5 (turret index speed)

it's on a p200 control