2PCs 8mm x 300mm (.315 x 11.81 inches) Case Hardened Chrome Plated Linear Motion Rod Shaft Guide - Metric h8 Tolerance

These were well packaged and both were perfectly straight. I'm very pleased with these and will buy again from this seller.

I didn't use these for robotics, CNC, or 3D printing, but they were absolutely perfect for the project they were purchased for. I didn't spend much time on any measurements, but they were consistent enough for what I was doing. I wouldn't hesitate to buy them again.

Quality rods. Used for my custom zaribo 3d printer. Good packaging

I have tested several rods using a dial indicator to check for straightness. I use the HF digital dial indicator on a magnetic stand. The key to getting consistent results is to have a follower that rides on top of the rod so that minor xy position error does not affect the dial indicator reading. I use a piece of glass as it provides a perfectly flat surface to the rod. Good stock rods are typically <0.05mm out of round. Unfortunately one of my boxes was damaged in shipping, but one of the rods was undamaged. It measured better than 0.01mm!. The second set of rods arrived in perfect condition with high denisty foam separating the rods and protecting them from the box at 5 different points. Customer service was excellent for the damaged box. I will update when I get a chance to test the second set of rods

Package was well packed, product was dimensional as described, quality of finish was great, shipping was on time. Nothing bad to say about the Reliabot products.

I actually used this with a 3d printed bearing and was surprised at how well they worked!

These were perfect for my project, which is a custom start gate for a Pinewood Derby track. Both rods were perfectly straight. They cut easily with my chop saw and a 7" diamond metal cutting blade. Dimensions were as advertised. Shipped promptly and arrived on time.

They were about 5mm too short for the bed of my Robo R1+ but I was able to make some spacers to deal with the problem. Nice quality other than that small problem.

Buena calidad

Die Originalwellen sind ein graus und nach dem Austausch mit neuen Lagern läuft die Y Achse besser

Acheté en remplacement pour mon imprimante 3D, elles sont parfaitement linéaires(ce qui est rare), la rigidité est excellente et le traitement de cémentation est de très bonne qualité.

Salve,comprate e montate queste barre per una cnc. Che dire fanno il loro dovere sono moto ben rifinite i cuscinetti scorrono molto bene . Le consiglio !!!

I got two sets of these (Y (330mm) and Z (320mm) axis) for an LDO Bear2.1 upgrade for my 3d printer. Well packaged so they arrived in perfect condition. Accurate lengths and my standard bearing run nice and smooth with minimal noise.