[gio666]

Do these blocks use a z0 preload? Normal preload or Light?

SBC have a K1 pre load, i guess same as Hiwin Z1 . Z0 pre- load is how most of the blocks are sold

[blitz355]

SBC have a K1 pre load, i guess same as Hiwin Z1 . Z0 pre- load is how most of the blocks are sold

Are the tbi blocks you use z0?

Thanks!

[gio666]

Are the tbi blocks you use z0?

Thanks!

I guess they should be, Z0 is Hiwin number

[blitz355]

I guess they should be, Z0 is Hiwin number

Ok, thanks. I believe youre right. Z0 is normal with z1 being slight preload

[gio666]

Ok, thanks. I believe youre right. Z0 is normal with z1 being slight preload

They all have a different way of rating,light pre load z2 on the tbi blocks. if wanting higher pre load you can change bearings inside block. it is very easy
Also there is so many counterfeit TBI ballscrews and blocks out there, with them you never know what you get

[blitz355]

They all have a different way of rating,light pre load z2 on the tbi blocks. if wanting higher pre load you can change bearings inside block. it is very easy
Also there is so many counterfeit TBI ballscrews and blocks out there, with them you never know what you get

Even if the place is noted as a supplier on tbi's website? Z0- no preload/normal
Z1- light z2- medium z3-heavy

Do you just change out the ball bearings? Where do you get these from?

[ihavenofish]

bearings you can buy in 0.0005" (or less) increments from some suppliers on ebay. its cheaper if you can buy them already set up correctly of course, but if you need to change existing blocks, it should be fine. 20mm blocks take 1/8" balls (yes, not metric). 0.1255 should get you medium preload.

[blitz355]

bearings you can buy in 0.0005" (or less) increments from some suppliers on ebay. its cheaper if you can buy them already set up correctly of course, but if you need to change existing blocks, it should be fine. 20mm blocks take 1/8" balls (yes, not metric). 0.1255 should get you medium preload.

Is medium preload recommended? I think the sbc bearing he uses, like he said k1. K1 according to sbc data sheet is normal, and k2 is "light".
Good to know that you can find them on ebay, do you search anything specifically or just "ball bearings"

[ihavenofish]

its a trade.

less preload = less friction = less wear and higher speeds.
more preload = more rigidity and more stiffness.

in the case of a raptor, id think light to medium is good. no preload is actually adequate, although cutting aluminium i did notice some vibration at the blocks. even then i still have a good finish in relatively heavy cuts in aluminium

what you DONT want is clearance (which is also an option from most manufacturers). this means the blocks are loose, usually for accomodating sloppy alignment in non precision equipment.

[infer66]

Anyone knows the torque needed for setting the various raptor screws? ex (end frame to extrusions, profile rails)

Cyprus customs wins the world slowest port customs award. Arrived Feb 13th... still waiting.

[blitz355]

its a trade.

less preload = less friction = less wear and higher speeds.
more preload = more rigidity and more stiffness.

in the case of a raptor, id think light to medium is good. no preload is actually adequate, although cutting aluminium i did notice some vibration at the blocks. even then i still have a good finish in relatively heavy cuts in aluminium

what you DONT want is clearance (which is also an option from most manufacturers). this means the blocks are loose, usually for accomodating sloppy alignment in non precision equipment.

Yea that all seems to align with what ive read elsewhere, thanks for mentioning your experiences with aluminum. Good to know that the no preload/normal still gives a decent finish (obviously the rest of the machine needs to be up to snuff).

[JohninOttawa]

George, nice seeing you in Toronto today. Thanks for making the trip to get me the hardware I needed. It was nice of you to add in the drop-in nuts, over and above.

All the best
John

[gio666]

Yea that all seems to align with what ive read elsewhere, thanks for mentioning your experiences with aluminum. Good to know that the no preload/normal still gives a decent finish (obviously the rest of the machine needs to be up to snuff).

What one company rates their blocks might not be same as other company.s, C5 ballscrew from china that they rate, nsk or THK rate it as c10 if not a lot higher.
As a few people know , putting tbi blocks on rails its a little hard at first, So would not want any less clearance then that .

- - - Updated - - -

George, nice seeing you in Toronto today. Thanks for making the trip to get me the hardware I needed. It was nice of you to add in the drop-in nuts, over and above.

All the best
John

No problem

[gio666]

Anyone knows the torque needed for setting the various raptor screws? ex (end frame to extrusions, profile rails)

Cyprus customs wins the world slowest port customs award. Arrived Feb 13th... still waiting.

Yes it was a long time they had it. sometimes i get motors and drivers from states and they sit in Canada customs for 21 days. Which is even worst, they don't even open package to look inside?

[gio666]

Mini Raptor Pre sale

[JohninOttawa]

Two quick questions this evening:

1) Are you still offering Mach3 licences? If yes, what's the best way to buy one? I can't find a link on your website. A related question on the Mach 3 add on package - Any opinion on whether it's worthwhile?
2) 4th axis - I know this was discussed a while back on the forum here. Is there a 4th axis offering from Xzero at present or planned?

Thanks
John

[gio666]

Two quick questions this evening:

1) Are you still offering Mach3 licences? If yes, what's the best way to buy one? I can't find a link on your website. A related question on the Mach 3 add on package - Any opinion on whether it's worthwhile?
2) 4th axis - I know this was discussed a while back on the forum here. Is there a 4th axis offering from Xzero at present or planned?

Thanks
John

Hi John , yes i have the mach3, you just email me and ill give info .
I will have the 4th axis is a couple weeks, i have finalized the design to use with mini Raptor or larger machine and just waiting for the part to get here

[gio666]

Have new usb card to check out ill post info of it with leadshine steppers and leadshine servos

[gio666]

Demon end frame with center 4080 if using dual ballscrews . having a total of 3 if using dual or single ballscrew it will be 2 4080 profiles

Attachment 274182

[naspc]

Hi John , yes i have the mach3, you just email me and ill give info .
I will have the 4th axis is a couple weeks, i have finalized the design to use with mini Raptor or larger machine and just waiting for the part to get here

Cant wait!