My attempt at a full rebuild of the Tormach 1100MX BT30 spindle.
Step by step:
Full dissasembly
New precision bearings as well as a look at why the originals might not last long.
Full reassembly
Do this at your own risk.
Reference docs:
New bearings
NSK 7008CTRDUL P4Y (Lower)
NSK 7006CTRDUL P4Y (Upper)
NSK bearing tables
https://www.nsk.com/common/data/ctrgPdf/bearings/split/e1103/nsk_cat_e1103b_partc.pdf#page=36
Angular contact bearing arrangement
https://nsk.com.br/upload/file/NSK_CAT_E1254f_148-151.pdf
Bearing fill
https://www.nsk.com/common/data/ctrgPdf/bearings/e728g.pdf#page=92
Bearing break in procedure
https://www.gmnbt.com/precision-bearing-breakin-procedure/