Bearing Series Designations: Understanding nomenclature
Bearing series designations indicate dimensional relationships. Understanding this system helps locate and specify bearings.
Number Structure
Bearing numbers encode series, type, and dimensions. The first digits indicate series width and diameter. Following digits indicate bore diameter. Type designation appears before dimensions.
Common Series
6000 series indicates a thin-section deep groove bearing. 6200 series is the standard deep groove series. 6300 series indicates larger cross-section.
Type Designations
Z or ZO indicates shielded bearings. RS or 2RS indicate contact seals. N indicates cylindrical bore for adapter sleeve mounting.
Application Guidelines
Series selection balances load capacity and envelope constraints. Standard series offer economical solutions. Thin-section or custom series address special requirements.