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Model: SFU1605-250mm;
Material: Carbon Steel;
Product name: Ball Screw;
Precision:C7 Grade;
Length: 250mm(9.84inch)
Diameter: 16mm(0.62inch)
Pitch: 5mm(0.19inch)
BK12+BF12 Ball Screw End Support with locknuts and circlips;
Package Including:
1Pcs x SFU1605-250mm Ball Screw
2Pcs x BK12/BF12 Support
1Pcs x 6.35x10mm Coupler
Application:
The ball screw is the transmissioncomponent and it is used in precision machine tools and machinery ,CNC Parts Its mainfunction is to convert the rotary movement into linear movement, or convert thetorque into axial reaction force, with high precision, reversibility and highefficiency.
High precision (±0.05mm), high efficiency, Brand New and high quality.
Low noise, smooth, not easy to shake or be detached when it is rotating at high speed.
Nick Hamilton
Reviewed in the United States on March 23, 2021
Working great
Taritha
Reviewed in the United States on January 23, 2021
For the price, you can't do much better than these. I ordered 4 of these in varying lengths for each axis on my homebuilt CNC router (2 for the x axis, 1 for Y and Z), and they all move each axis smoothly and accurately. I combo'd them with some linear rails for a surprisingly solid motion system on my CNC. Each axis moves accurately and there's very little variance in pitch along the length of any of the ballscrews.With a metric indicator, I measured about 0.05mm of backlash on every screw, or about 0.0019" (~2 thou). Since I still somehow happen to have a positive number in my bank account, I'd say that's pretty good! Certainly better than expected, and not bad for (presumably rolled) ballscrews. It's probably possible to get that number down lower by repacking the nuts with slightly larger bearings, but if you plan on doing this, make sure you know what you're doing. Repacking a ball nut and threading it back onto one of these things SUCKS (don't ask me how I know). Basically impossible if you don't have the right tools/don't know what you're doing.There's only one thing preventing these from getting the 5-star seal of approval-the ends of the shafts. For whatever reason, the 800mm ballscrew I ordered for my Y axis is a bit of a problem child. The ends are meant to go into bearing blocks that come with these 'screws, but they are too big. Too big for the couplers that came with this thing, and just barely small enough for me to force them into the bearings at the ends with a hammer and a go-get-em attitude. The other axes are fine, so just be warned, you might get a lemon.In the end, I managed to get it to work. It was just a pain, and the ballscrew works just as well as all the others in every other aspect. Overall, if I were shopping for ballscrews again, I would probably get more of these. They're an absolute steal for what you get, and they'll do the job for most hobby router builds or mill conversions as long as expectations are set accordingly.
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