To start, I finally got some good info on New Departure on the Google book project, a WWII catalogue:
New Departure Hand Book ... - General Motors Corporation. New Departure Division - Google Books
Daryl, you mention that with light bulb inside to heat the headstock the spindle slipped in. Did you have the rear bearing in first or did you put it in after the spindle was in? My front bearings are a very tight fit in the casting, and my rear bearing is not a slip fit on the spindle. Did you press the rear in after the spindle is in place to press equally on the inner and out race, or did your spindle slip through the rear? With my rear front bearing pushed in the headstock I am showing about 50 millionths runout on the spindle, and about 50 millionths on the outside of the front flanged bearing. Hopefully my front pair is ok. I would like to put the spindle in without the rear bearing to check the front pair, but I am leery now of installation as the fit is so tight.
Cal, do you still have the drawing of the older style headstock with the double row rear bearing? I only have the newer drawing with the pair of angular contact bearings.
My rear bearing is a New Departure 5210. The New Departure catalogue states for the 5000 series the balls are inserted with a defined compression so there is no relative movement. With repeated checks of my rear bearing there is actually about 0.0015 movement of the inner race relative to the outer race, a far cry from no movement. I am assuming now that the rear bearing needs to be replaced.
LocateBB on Ebay has a ND 5210(max), 5210WA, and A5210TS. The ND catalogue doesn't give all the pre/suffixes, and even this page
https://www.ahrinternational.com/HYATT-BALL-BEARINGS_nomenclature.shtml
doesn't explain those suffixes. Does anyone have any info on those three types? I guess I could buy all three and send back the two that look the least like mine.
New Departure Hand Book ... - General Motors Corporation. New Departure Division - Google Books
Daryl, you mention that with light bulb inside to heat the headstock the spindle slipped in. Did you have the rear bearing in first or did you put it in after the spindle was in? My front bearings are a very tight fit in the casting, and my rear bearing is not a slip fit on the spindle. Did you press the rear in after the spindle is in place to press equally on the inner and out race, or did your spindle slip through the rear? With my rear front bearing pushed in the headstock I am showing about 50 millionths runout on the spindle, and about 50 millionths on the outside of the front flanged bearing. Hopefully my front pair is ok. I would like to put the spindle in without the rear bearing to check the front pair, but I am leery now of installation as the fit is so tight.
Cal, do you still have the drawing of the older style headstock with the double row rear bearing? I only have the newer drawing with the pair of angular contact bearings.
My rear bearing is a New Departure 5210. The New Departure catalogue states for the 5000 series the balls are inserted with a defined compression so there is no relative movement. With repeated checks of my rear bearing there is actually about 0.0015 movement of the inner race relative to the outer race, a far cry from no movement. I am assuming now that the rear bearing needs to be replaced.
LocateBB on Ebay has a ND 5210(max), 5210WA, and A5210TS. The ND catalogue doesn't give all the pre/suffixes, and even this page
https://www.ahrinternational.com/HYATT-BALL-BEARINGS_nomenclature.shtml
doesn't explain those suffixes. Does anyone have any info on those three types? I guess I could buy all three and send back the two that look the least like mine.
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