What does 2RS mean on a 6304 bearing?

Q: What does 2RS mean on a 6304 bearing?

Short answer: `2RS` on a 6304 means rubber seal on both sides (contact seal, keeps dust and coolant out). The boundary dimensions stay 20 × 52 × 15 mm. Suffixes are not interchangeable: the same size with a different suffix behaves differently under load, heat or contamination.

Question

Accepted Answer

Short answer: `2RS` on a 6304 means rubber seal on both sides (contact seal, keeps dust and coolant out). The boundary dimensions stay 20 × 52 × 15 mm.

Suffixes are not interchangeable: the same size with a different suffix behaves differently under load, heat or contamination.