I have a SV15 with a built in polisher. Historically the crankshafts were placed in the machine nose to the head stock then ground and polished in that position and is correct for basic rotations for most crankshafts. That is about the only position I have ever seen one.
I have heard of polishing in the opposite direction of rotation (which they would be as described above), but, also opposite to the direction that the crankshaft was ground in. This requires initially mounting the nose to the tail stock, then rotating the nose to the head stock for polishing. This is described in a Clevite article, page 22, here: https://www.mahle-aftermarket.com/m...b-2-1114-engine-bearing-failures-brochure.pdf
I am thinking, (first mistake), that if I install a rotary switch to allow me to run my polisher forward or backward, I can accomplish pretty much the same procedure with the nose always to the head stock. The crankshaft would be ground opposite the rotation, then the polisher reversed for a short polish in the same direction as rotation (same direction as rotation to accomplish fuzz removal), then the direction changed and a final polish opposite of rotation.
Is this just getting too picky? I am sure most grinders have never been concerned about fuzz removal by polishing opposite of the grinding rotation. I am sure there are a few out there who mount nose to the tail stock, at least when they are doing a special job.
What's your opinion, is there a bearing tech out there?
I have heard of polishing in the opposite direction of rotation (which they would be as described above), but, also opposite to the direction that the crankshaft was ground in. This requires initially mounting the nose to the tail stock, then rotating the nose to the head stock for polishing. This is described in a Clevite article, page 22, here: https://www.mahle-aftermarket.com/m...b-2-1114-engine-bearing-failures-brochure.pdf
I am thinking, (first mistake), that if I install a rotary switch to allow me to run my polisher forward or backward, I can accomplish pretty much the same procedure with the nose always to the head stock. The crankshaft would be ground opposite the rotation, then the polisher reversed for a short polish in the same direction as rotation (same direction as rotation to accomplish fuzz removal), then the direction changed and a final polish opposite of rotation.
Is this just getting too picky? I am sure most grinders have never been concerned about fuzz removal by polishing opposite of the grinding rotation. I am sure there are a few out there who mount nose to the tail stock, at least when they are doing a special job.
What's your opinion, is there a bearing tech out there?
