• RU66 crossed roller bearing
  • RU66 bearing datasheet
  • RU66UUCC0 cross roller ring supplier
  • RU66 cross roller bearing structure
  • Part NO.

    Open type:RU66

    With seal:RU66UU

  • Dimension




  • Mounting



  • Basic Load Ratings



  • Equivalent Model


  • Features
  • Mounting
  • RU66 Detail Specifications:

    Type of guide Roller
    Space retainer Yes
    Material GCr15
    Lubrication method Grease lubrication
    Oil hole Yes
    Sealing UU- NBR sealing both sides
    Surface treatment Black oxide treated, phosphate treatment, other
    Radial clearance CC0, C0
    Rotation accuracy P5/P4
    Working temperature -15℃ ~ 80℃


    RU66 crossed roller bearing features:

    1. Integrated inner ring and outer ring, provide high stiffness
    2. Sustain radial, axial, and moment loads at the same time
    3. High rigidity & rotation accuracy, compact structure reduce the influence by the installation
    4. Miniaturization. Inner ring and outer ring with mounting holes, so it can be easily mounted to a device with bolts without need for housing and fixing plate, so surrounding parts of the bearing can be made compact, which contributes to miniaturization and a weight saving of devices.

    Check more RU series crossed roller bearings.

    RU66 cross roller ring running accuracy inspection:

    Threaded mounting hole test:

  • RU66 crossed roller bearing installation instructions


    RU cross roller bearing mounting

    RU66 Mounting Holes

    Shoulder height

    ds: 59mm

    Dh: 74mm

    PCD1: 45mm

    PCD2: 83mm

    Inner ring mounting hole 8-M4 through

    Outer ring mounting hole 8-φ4.5 drilled through, φ8 counter bore depth 4.4


    Cautions: For crossed roller bearings with split outer ring, when the rigidity of the mounting parts is not sufficient, stress concentration will occur at the contact area between the rollers and raceways, and the bearing performance will deteriorate significantly.

    Therefore, it is necessary to carefully examine the rigidity of housing and the strength of fixing bolts when a large moment will be applied.

    1.Before installation, please clean bearing bracket, shaft, or other components, make sure there is no burrs or rough edge.
    2.Fix the inner and outer rings in the axial direction directly to the mounting surface by fixing bolts
    3. If a large number of radial load and/or moment is applied, it is recommended to prepare the flange part as Fig.4.


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