#45 Ball Nut Replacement on SFU1605 Ballscrew - CNC Machine Stuff
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- เผยแพร่เมื่อ 16 มิ.ย. 2024
- In this video I replace the ball-nut along one of the Y Axis SFU1605 ballscrews from my CNC machine. You can hear the difference in sound before and after within the video.
00:00 - Intro
01:01 - Obligatory Homing Shot
01:48 - Nut Spin Comparison
02:38 - Removing Ball Screw
03:06 - Replacing Ball Nut Process
04:16 - Returning Ball Screw
05:06 - Before After Comparison
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If you combine two Sfur1605 nuts with a hard spring between them and attach them to your shaft, the gap will be reset.
You need a grease fitting in it to keep it greased. I don't see one in disassembly or reassembly.
1:52 There are no pictures on the internet of what I am looking at right there. Unfuckingbelievable. Thank you for posting this.
What size steppers motors are on the machine?
Is that a pack of Loose Leaf Tea form The Algerian Coffee Stores sat next to the pack of Sainsbury’s Taste The Difference Tea 🤔
💖
Can you measure the deflection of your x gantry during a drilling type cycle?
I'm trying to think how to do that mid-cut? Any suggestions?
Would you be able to repack the bearings into the ballnut? Is a new ballnut the only option?
I've never been able to do it right. Would need to shown how to do it, so it's a lot easier to get a new ball-nut.
Where did you buy your ball screw or the nut from?
I have repack the 1605 and 1204 ball nut few times with great success...1204 take longer time because is smaller...but with patience is very doable!
If you combine two Sfur1605 nuts with a hard spring between them and attach them to your shaft, the gap will be reset.
I have no idea how you determined which replacement part number and where to buy. I have two cnc machines that were used to sandblast signs that need new ball screws.
That sounds interesting - what kind of machine is it? I guess measure the ball screw diameter and travel per single rotation is a start.
@@EducatingSavvas omiocnc x3-300-usb. One was intact, the othere was stripped but had two stepper motors and three ot four ball threads. I went and got bearings and four m4 cap screws running around town to suppliers. Bought a used Gecko g540 since they are 10 miles from me. The contoller was taken spart for parts but is 85 percent there. Had advice to build the Gecko and not waste time on Chinesium controller.
You really need a bearing on the end of that machine to isolate the motor shaft. The motor shaft is not designed to take that kind of force.
The ballscrew is fixed from the other end. The other support which I didn't use, doesn't fix the screw as it allows for linear movement. Anyway you'll just have to wait for the next video for the accuracy test.
Educating Savvas Accuracy is not the issue, it’s the force you put to the motor shaft. That’s why you want to put the coupler behind a fixed bearing. You are headed to a possible broken motor shaft. Don’t believe me? Look it up for yourself. There’s a reason why these bearings exist. You want the fixed bearing on the motor side and the floating bearing on the opposite side. All you have to do is a little research. I’m not trying to make you look bad, just trying to save you some trouble.
there's no axial load because the screw is fixed at the far end, radial load on the stepper is very little and limited by the coupler
Lasse Langwadt Christensen Very little load on the stepper? How about no axial load on the stepper? That’s how it’s supposed to work... no load on the stepper with a fixed bearing at the stepper end...
there's no axial load, there will be some radial load but look up the rating for a nema23/34 stepper, if you exceed that something else is very wrong
maybe you need to replace or add grease?
I'm looking into micro grease guns at the moment.
OMG!!! you forgot second bearing support, your screw not have a support!.
The fixed support is on the opposite side (far end) and motor coupler replaces the other not fixed support. It's not an OMG moment. My cut results are amazing.