MGN12H Sliding Carriage Printer Machine Power Transmission Products Review

A quick inspection revealed that straight out of the box the guides were missing some bearings and no replacement bearings were included. An easy problem to fix, but still annoying for a brand new part. First rubbed with alcohol and re-greased, added the missing bearings, but it was still stuck. So I checked the bottom brackets and both metal clamps holding the bearings were loose due to poorly designed bottom brackets. No wonder the bearings keep falling out. At the moment it already took me…

I ordered 4 of these and received 4 guides made by 4 completely different machines/people/company. 1 of these are excellent, high quality, clean bearings, properly lubricated and much more than I expected for the price. 2 of them are fine with some roughness. Both need a good cleaning and lubrication before use, but work well and are still good value. 1 of these is hot trash with mismatched metal balls, poorly made track, bad wipers, no oil hole etc and now it's in the trash. I would send it…

I bought 8 of these. It turns out that all the reviews are correct. There are terrible and wonderful. This is gambling. 2 of them were amazing. 1 fit well, 2 was a little tight, 3 was a little tight. I thought maybe it was a preservative but nothing changed even after cleaning. I could swap and lock too tight and they will always run tight or with any lock on well adjusted rails and they will always fit well. So it's rails, not blocks. I bought these because they had a super deal of $11 and I…