This volume acts as a dimensional backbone for the EZO program. It consolidates bore, OD, width, chamfer and mass data together with common seal/shield variants so planners can build accurate BOMs and stores can validate parts at goods‑in. Tables are complemented by notes that clarify interchange caveats and what to check when moving between open, single‑shielded and sealed versions of the same basic bearing. The intent is to reduce picking errors and speed up quoting by placing all critical dimensions in one place.
Practical guidance highlights how to read boundary dimension codes, when to consider alternative cage styles for the same envelope, and how tolerances stack with shaft/housing fits. The dimensional view is tied back to service behavior: what a tenth of a millimeter change means for axial float, how chamfer limits affect corner clearance in compact housings, and why shield/ seal friction matters in low‑torque drives. Use this catalog as the reference you keep open while planning or troubleshooting.
