This part of ISO 12129 specifies tolerances on form and position as well as the surface roughness of shafts, flanges and thrust collars as used in plain bearing units. It is applicable to journal or thrust plain bearing units or to a combination of both, installed ei-ther horizontally or vertically.
This part of ISO 12129 is not applicable to crankshaft bearing units in combustion engines.
BS ISO 12129-2:1995 history
2019BS ISO 12129-2:2019 Plain bearings. Tolerances. Tolerances on form and position and surface roughness for shafts and thrust collars
1995BS ISO 12129-2:1995 Plain bearings - Tolerances on form and position and surface roughness for shafts, flanges and thrust collars