In yesterday’s post, we saw one simple way to make a custom bearing block using waterjet cutting.
Now let’s take a look at a different bearing block system, this one from MattyCiii of the Endless Sphere Technology forums. He needed a special bearing block for a custom electric bicycle he was building for himself. He designed a bearing block to be made in two pieces, each 0.625 inches thick. When stacked together, they are exactly the width of the 1.25 inch thick tube that they mount to. An aluminum tube fits in the large hole in the blocks, and a ball bearing fits inside that, which supports the shaft. You may notice that there is a small gap at the bottom of the bearing blocks. According to MattyCiii, this allows the bearing block to grip the aluminum tube tightly when the bearing block is clamped in place.
Note that if you are base mounting this type of bearing block (mounting along the cut edge), you will want to use low-taper waterjet cutting in order to keep your driveline straight. For face mounting, you might be able to get away with using regular cutting if you can drill or ream the hole where the shaft passes through in order to give it an even diameter all the way through the material.