• 308DBS205y slewing ring bearing
  • NSK 308DBS205y slewing bearing
  • 308DBS205y four point contact ball bearing
  • 308DBS205y bearing structure
  • Part NO.

    Open type:308DBS205y

  • Dimension




  • Mounting



  • Basic Load Ratings

  • Equivalent Model

  • Features
  • Mounting
  • 308DBS205y detail specifications:

    Rolling Elements Ball
    Space retainer Yes
    Material GCr15 Bearing steel / 50Mn
    Standard lubrication method Grease lubrication
    Lubrication hole Yes
    Sealing NBR sealing at both sides
    Module 6
    Teeth number 85


    308DBS205y slewing ring bearing features:

    1. Sustain radial, axial loads and tipping moments.

    2. Simple structure, reduce maintenance time.

    3. Easy installation and replacement with through or threaded mounting holes on inner and outer rings.


  • 308DBS205y slewing bearing mounting holes:

    – Inner ring mounting hole 15-M20, Thread depth 30mm

    – Outer ring mounting hole 16-M18, Thread depth 30mm


    308DBS205y four point contact bearings installation instructions

    VLU200414 slewing ring mounting instruction


    1. Make sure the mounting surface is flat and clean, and free from burrs or

    rough edge.


    2. The unhardened zone is marked with an “S” on the slewing ring, it must be positioned outside the main load-carrying areas.


    slewing ring bolts fastening order

    3. Commissioning of the slewing ring under sufficient load.


    4. Adjust the backlash of gear and recheck it after final tightening of the bearing.


    5. Fastening bolts. Place the bearing onto connecting structure and align the screw holes. Screw all the bolts in the holes first and follow the order as shown in diagram when tightening bolts in diagonally opposite sequence. Do not tighten bolts randomly.



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