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Koyo Ball, Needle Roller Bearing Nomenclature Guide
Bearing. Series. 0.1250. EE6. 0.1875. EE7. 0.2500. EE8. 0.2500. EE9. 0.3750. EE10. 0.5000. EE11. C2. Smaller than Standard. XM. 0.6250. EE12. No Code. Standard. SR. EE13. 1.5000. C3. Larger than Standard. ZX. ZZX. M1. 0 5 mm. P2. M2. 3 8 mm. M3. 5 10 mm. M4. 8 13 mm. M5. C3. Koyo Shielde. EE0 ZZ. EE1S ZZ. -
RD Type (Light Contact) Sealed Ball Bearings
Koyo's efforts in R&D resulted in our newly devel- oped RD type sealed ball bearings to satisify these demands. With torque as low as that of non-contact sealed ball bearings, yet a seal nearly as tight as contact type product, superior protection from water and dust has been achieved.