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Double row angular contact ball bearings

RKB double row angular contact ball bearings can be considered in design similar to a pair of single row angular contact ball bearings in O or X configuration. They can accommodate thrust loads as well as high radial loads. These bearings are normally used in arrangements requiring a rigid axial guidance and they can also withstand tilting moments.

Main types

  • Type DBA

    • Double row ACBB back-to-back arrangement (DB)
    • Filling slot on inner ring
    • Non-separable open design
    • Moulded glass fiber reinforced polyamide snap-in cage guided on balls (TN)
    • Available with lubrication holes in the inner ring
    • Supports high combined loads

  • Type DF

    • Double row ACBB face-to-face arrangement (DF)
    • Separable open design
    • Machined brass cage guided on inner ring (MB)
    • Lubrication grooves and holes in outer rings
    • Supports high combined loads

  • Type DB1

    • Double row ACBB back-to-back arrangement (DB)
    • Non-separable open design
    • Moulded glass fiber reinforced polyamide snap-in cage guided on balls (TN)
    • Available with lubrication holes in the inner ring
    • Supports high combined loads

  • Type DB/ZZ

    • Double row ACBB back-to-back arrangement (DB)
    • Non-separable shielded design (ZZ)
    • Moulded glass fiber reinforced polyamide snap-in cage guided on balls (TN)
    • Available with lubrication holes in the inner ring
    • Shielded type to keep the grease inside the bearing without compromising the limiting speed
    • Supports high combined loads

  • Type DB2

    • Double row ACBB back-to-back arrangement (DB)
    • Machined brass cage guided on inner ring (MB)
    • Lubrication grooves and holes in outer ring
    • Two-piece inner ring
    • Supports high combined loads

  • Type DB/2RS

    • Double row ACBB back-to-back arrangement (DB)
    • Non-separable sealed design (2RS)
    • Moulded glass fiber reinforced polyamide snap-in cage guided on balls (TN)
    • Available with lubrication holes in the inner ring
    • Sealed type to keep the grease inside the bearing without compromising the limiting speed
    • Supports high combined loads

  • Type DB3

    • Double row ACBB back-to-back arrangement (DB)
    • Machined brass cage guided on inner ring (MB)
    • Lubrication grooves and holes in outer ring
    • Narrower outer ring compared to type DB2 design
    • Two-piece inner ring
    • Supports high combined loads

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