Where to get replacement bearings for extruder arm?
I'm wondering if someone knows where I can order replacement bearings for the extruder arm. The 2 bearings that press the filament against the gear. They are labeled 693 2RS, but when I look online, none of the ones I can find have the little groove in them that the Prusa ones do. I don't see them at all on the prusa website. In replacing my extruder motor and trying to be proactive in doing some cleaning and lubricating, I lost one of the little bearings. Rather than have them shipped from across the world, it would be great to find a local source for them (USA). I'd appreciate any suggestions. Thanks!
RE: Where to get replacement bearings for extruder arm?
Personally I would not worry about the groove, but they are cheap enough that if you find a problem you can throw away the ungrooved ones when you get replacements.
But if you are worried about it then the obvious place to ask is Print Solid. For reference, what you need to ask for is Bearings for the Idler Lever
RE: Where to get replacement bearings for extruder arm?
Good point, I hadn't thought about Printed Solid.
My concern with the groove is that I already find the filament doesn't load properly on a semi-regular basis, and I don't want it to wander off track even more by getting a bearing without a groove (not to mention how that will impact the tension against the gear). But, Maybe I'll end up giving that a try if I can't get replacements in a timely manner.
It's a little frustrating that there are parts you can't order. I needed to replace the extruder motor (this is the second one that has gone bad on me), but they don't sell replacements, so I had to go through support. To give them credit, they sent me the motors without a charge, but I run my machines close to 24 hours a day when the holidays come around, and it's frustrating when you can't just order replacement parts when things are out of service. Hopefully they'll make more parts available in the near future.
RE: Where to get replacement bearings for extruder arm?
Good point, I hadn't thought about Printed Solid.
My concern with the groove is that I already find the filament doesn't load properly on a semi-regular basis, and I don't want it to wander off track even more by getting a bearing without a groove (not to mention how that will impact the tension against the gear). But, Maybe I'll end up giving that a try if I can't get replacements in a timely manner.
It's a little frustrating that there are parts you can't order. I needed to replace the extruder motor (this is the second one that has gone bad on me), but they don't sell replacements, so I had to go through support. To give them credit, they sent me the motors without a charge, but I run my machines close to 24 hours a day when the holidays come around, and it's frustrating when you can't just order replacement parts when things are out of service. Hopefully they'll make more parts available in the near future.
RE: Where to get replacement bearings for extruder arm?
I've had loading problems a few times, ever time has been damp filament
RE: Where to get replacement bearings for extruder arm?
I've had loading problems a few times, ever time has been damp filament
That's not the case for me, but I'm glad you figured it out for your machine!
RE:
I searched for this part for a month too, i also asked through prusa chat if i can order it somewhere but they just provided which bearing they use. But i think i found it: https://www.aliexpress.com/item/1005006146434046.html?spm=a2g0o.order_list.order_list_main.5.365a1802jcYIFw
I dont know they using "V" shape or "U" shape i ordered both and now waiting for package to arrive.