IPC Subgroup
B21H 1/12 rings for ball or roller bearings
Introduced: September 1968
Last revised: January 2006
Full Title
Making articles shaped as bodies of revolution > rings of restricted axial length > rings for ball or roller bearings
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS