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While the runout is very low, I have about 5 thousandths axial play- from the spindle and not the quill. I dropped the spindle on the table and tightened the locknut inside, and made sure the nosecap was tight, but there was no change. I have never been totally happy with how well the spindle held the QC 30 tools, and the contact after bluing was so-so best I can tell. I don't know what went wrong, but I need it professionally fixed to be the best it can be. I am tired of it squealing and making crappy parts.
I spoke to Bill at C&M Spindle in Oregon and he was rather unfamiliar with the QC 30 system, even saying that it was a Kwik Switch which I had to explain to him was another system that is less common on Bridgeports. Anyway, he assures me he can do it and set it up perfectly for the sum of $650 for bearings and $350 for a regrind. Setting up the locknut for the QC 30's takes some care and I am nervous about giving it to someone not experienced with these locknuts.
The bearing price includes installing 4 bearings in the spindle plus the top one. I asked him who makes the bearings he uses and he could not pronounce the name, I asked him where they come from and he said China which leaves me nervous. He said that the only way he can get bearings with a seal on one side is from China. One manufacturer makes the bearings, and another installs a seal on one side. He says he removes the seal from the 2 inside bearings of the stack of 4. Bill also told me that he can set it up to run at higher RPM's if I tell him how high I wanted to go, up to a 6500 limit. I found that interesting and I don't understand what he would do different.
Wells-Index is about $750 for normal bearing setup and a regrind.
I am not sure if the extra 2 bearings are worth the cost, and I am not sure that I am comfortable with the China bearings. I have a lot invested in this machine already, including re-balled ballscrews, and it seems to make sense to suck it up and get the spindle done right.
Any random thoughts?
I spoke to Bill at C&M Spindle in Oregon and he was rather unfamiliar with the QC 30 system, even saying that it was a Kwik Switch which I had to explain to him was another system that is less common on Bridgeports. Anyway, he assures me he can do it and set it up perfectly for the sum of $650 for bearings and $350 for a regrind. Setting up the locknut for the QC 30's takes some care and I am nervous about giving it to someone not experienced with these locknuts.
The bearing price includes installing 4 bearings in the spindle plus the top one. I asked him who makes the bearings he uses and he could not pronounce the name, I asked him where they come from and he said China which leaves me nervous. He said that the only way he can get bearings with a seal on one side is from China. One manufacturer makes the bearings, and another installs a seal on one side. He says he removes the seal from the 2 inside bearings of the stack of 4. Bill also told me that he can set it up to run at higher RPM's if I tell him how high I wanted to go, up to a 6500 limit. I found that interesting and I don't understand what he would do different.
Wells-Index is about $750 for normal bearing setup and a regrind.
I am not sure if the extra 2 bearings are worth the cost, and I am not sure that I am comfortable with the China bearings. I have a lot invested in this machine already, including re-balled ballscrews, and it seems to make sense to suck it up and get the spindle done right.
Any random thoughts?
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