BALL and ROLLER BEARINGS POPULAR SIZE
istics. Notes). 1) Illustration (a) of the ZZ type shows the relatively small size bearing. 2) Illustration (d) of the 2RS type shows the relatively small size bearing. 3) The operating temperature range listed is for the standard type. It can be widened by using a different type of grease or sealing material. Consult Koyo for details.
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.
sealed type. Single-row deep groove ball bearings. B r r u D u d. Z. Z. ZX. RU. RD. RS. RS. ZZ. ZZ. ZZX. 2RU. 2RD. 2RS. 2RS. Shielded. Non-contact sealed 3209. —. —. 56.3. 52. —. 78. 1. 0.710. 45. 85 30.2. 1.1. 62.3. 38.4. 52.1. 33.9. 2.00. 1.75. 4 600. 4 600. 6 100. 5209. 5209 ZZ. 5209 2RS. 42.2. 52. 55.3. 78. 1. 0.620.
ZZ. ZZ. ZZX. Shielded. 6800. 6900. Series. 6700. Series. □Boundary dimension. □Equivalent radial load. □Series variation. Dimension Table. Dynamic equivalent radial load : Static equivalent radial load : 2. 3. 1) f0 Factor fo is shown in the bearing dimention table. Notes: 2) For i, use 2 for double-row and 1for single-low.