I got this rail a while ago on eBay and finally got around to the project of mounting a stepper motor. Lacking a machine shop, I designed and printed a mounting plate, as the plate that came with the rail was for a different motor.
I countersunk the screws that attach the plate to the motor and used melt-in brass inserts to facilitate attachment of the motor/plate assembly to the rail.
The motor is a Vexta and the rail is a Nippon Bearing BG2602B-300H.
3D Printed Stepper Mounting Plate for Nippon Bearing Rail
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Re: 3D Printed Stepper Mounting Plate for Nippon Bearing Rail
funny incident, I just finished the same setup with a THK KR2602B-300 (same version with an idler rail integrated). I had an motor adapter plate for Nema 17 once offered by MKJZZ what looks identical to your 3D printed version.Doppler9000 wrote: ↑Wed Feb 01, 2023 11:56 amI got this rail a while ago on eBay and finally got around to the project of mounting a stepper motor. Lacking a machine shop, I designed and printed a mounting plate, as the plate that came with the rail was for a different motor.
I countersunk the screws that attach the plate to the motor and used melt-in brass inserts to facilitate attachment of the motor/plate assembly to the rail.
The motor is a Vexta and the rail is a Nippon Bearing BG2602B-300H.
Because of the extreme low friction of the rail and the ballscrew I was afraid that in a vertical setup gravity would be able to to push down camera-lens-combo. But it turned out that this is not the case using a 400step/revolution Nema 17 motor. Some first runs make me confident that even with a 2mm pitch of the ballscew I can get very consistent 1µm movements. So I think those 2602b rails are the holy grail for us focus stackers only drawback is they are hard to find at an affordable price..
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- Posts: 112
- Joined: Thu Oct 13, 2011 3:56 pm
Re: 3D Printed Stepper Mounting Plate for Nippon Bearing Rail
It was a post you made a while ago that put me onto the 2602B in the first place. I got mine for a pretty good price about a year ago - $249 including shipping from Korea. There are a few on eBay now, but with silly prices. The “B” rails are great, but people should look out for the “D” variants, as well. They have two short sliders.lothman wrote: ↑Wed Feb 01, 2023 12:55 pmfunny incident, I just finished the same setup with a THK KR2602B-300 (same version with an idler rail integrated). I had an motor adapter plate for Nema 17 once offered by MKJZZ what looks identical to your 3D printed version.Doppler9000 wrote: ↑Wed Feb 01, 2023 11:56 amI got this rail a while ago on eBay and finally got around to the project of mounting a stepper motor. Lacking a machine shop, I designed and printed a mounting plate, as the plate that came with the rail was for a different motor.
I countersunk the screws that attach the plate to the motor and used melt-in brass inserts to facilitate attachment of the motor/plate assembly to the rail.
The motor is a Vexta and the rail is a Nippon Bearing BG2602B-300H.
Because of the extreme low friction of the rail and the ballscrew I was afraid that in a vertical setup gravity would be able to to push down camera-lens-combo. But it turned out that this is not the case using a 400step/revolution Nema 17 motor. Some first runs make me confident that even with a 2mm pitch of the ballscew I can get very consistent 1µm movements. So I think those 2602b rails are the holy grail for us focus stackers only drawback is they are hard to find at an affordable price..
Do you have a picture of your setup?
Re: 3D Printed Stepper Mounting Plate for Nippon Bearing Rail
wow, I wish I can print that kind of quality, looks like I need to get a good printer. thanks for sharing
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- Posts: 112
- Joined: Thu Oct 13, 2011 3:56 pm
Re: 3D Printed Stepper Mounting Plate for Nippon Bearing Rail
Thanks, Prusa is sooooo expensive in China . . . almost same as CoreXY type of printerDoppler9000 wrote: ↑Thu Feb 02, 2023 11:06 amMy pleasure.
I had two somewhat less expensive printers die, so I decided to get a Prusa. I got a 0.6mm nozzle, for better part strength.
Anyways, I was using cheap filament (5USD per kg), too. Now I am using eSun matte finish filament, same printer, quality is much better, but for prototype type of print, I am still using the cheap one, they run out so fast